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  • WATER PLANNING | TrinityGlenRoseGCD

    Here you will find the latest research by the Trinity Glen Rose District in our effort to learn about the Trinity Aquifer. Water Planning The TGRGCD was created to address groundwater issues or problems within the District overlaying Trinity group of aquifers. The District includes data from the TWDB’s Groundwater Availability Models (GAMs), input from the Groundwater Management Area 9 cooperative planning process, public input, and the most current and accurate site-specific data available in the development of its management plan to preserve, protect and conserve the Aquifer. The District also cooperates with adjacent groundwater districts, Groundwater Management Area 9, Regional Water Planning Groups, local water purveyors and stakeholders, and adjacent counties with similar aquifers and/or groundwater usage to ensure a collaborative means of protecting water supplies in this area of the state. Groundwater Management Area 9

  • TRINITY AQUIFER EDUCATION | TrinityGlenRoseGCD

    Looking for water data? You've come to the right place. You can find water well locations and data at this page. Trinity Aquifer in Northern Bexar County The Trinity Aquifer is one of nine major aquifers defined by the state , stretching from the Texas Hill Country into Oklahoma, and it is the primary water source within the Trinity Glen Rose Groundwater Conservation District (TGR). Though often referred to as a single aquifer, the Trinity Aquifer is really a group of aquifers , experts say. It’s divided into three units — the Upper, Middle and Lower Trinity — and within those are more layers, or strata, made up of different formations, all of which allow water to move through in different ways and at different rates. TRINITY AQUIFER EDUCATION You can download a technical geologic and hydrologic report of the Trinity Aquifer by clicking this link. The Trinity system stretches across 61 counties from northeast of Dallas to southwest of San Antonio covering more than 10,000 square miles at the surface and more than 21,000 square miles below ground. It runs throughout much of the Hill Country, including all or portions of Kendall, Comal, Hays and Blanco counties, and is considered one of the “most extensive and highly used groundwater resources in Texas” by the Texas Water Development Board. The Trinity Aquifer is a low production aquifer which recharges slowly, with only an estimated 4–5% of rain recharging it. Despite its slow recharge rate, it stands as one of Texas’ most extensive and heavily used groundwater resources. Primarily utilized by municipalities, it also serves as a vital source for rural homes, irrigation, livestock, and other domestic uses. Trinity Aquifer Trinity Aquifer Subgroup (down dip) Trinity Aquifer in Northern Bexar County Trinity Aquifer water well depths vary from shallow, hand-dug wells to drilled wells that can be more than 1,200 feet deep based on TWDB records for Bexar County. Depths are highly variable and depend entirely on site-specific topography and geology, especially faulting. Well yields in the Trinity are typically dependent on the nature of fractures and dissolution features intersected by the well bore, which can be highly variable over short distances. Well yields are typically low (less than 20 gallons per minute (gpm) ) but may occasionally be significantly higher, with yields of 400-600 gpm being reported in some wells. Water quality within a specific aquifer can be defined or characterized in a general sense, but can vary significantly based on local geology, hydrology, and structure. The Trinity Glen Rose District is located in the southern portion of the Trinity Aquifer where it underlies the Texas Hill Country. The District includes the northern third of Bexar County as well as small parts of Comal and Kendall counties and is part of the Edwards Plateau. Although it is defined by the state as a major aquifer, the water quality and productivity of the Trinity Aquifer throughout the region, including the District, varies greatly. The District is located entirely within the San Antonio River basin and is divided by three sub-basins: the Cibolo Creek, Medina River, and Upper San Antonio River sub-basins. The Cibolo Creek, Leon Creek, Salado Creek, and the Upper San Antonio River watersheds provide for surface drainage generally from the northwest to the southeast within the District. Cibolo Creek is a tributary of the San Antonio River and drains from northwest to southeast across the Trinity Group of Aquifers, where it is a major recharge feature of these aquifers. Cibolo Creek is also the county boundary between portions of northern Bexar County and adjacent counties to the north and east. Salado and Leon Creeks flow from northwest to southeast through the middle of the District, eventually joining the San Antonio and Medina Rivers to the south. Trinity Aquifer Surface Geology & Fault Map - Click the Map to View Interactive Map Recharge to the Trinity Group of Aquifers occurs via local precipitation on its outcrop, infiltration of flows in Cibolo Creek, and through the overlying units where the Trinity is present in the subsurface. The quantification of recharge to the Trinity Aquifer in the Hill Country is difficult and estimates of recharge to the Trinity Aquifer vary significantly, from as low as 1.5 percent of precipitation to as much as 11 percent of precipitation (Muller and Prince, 1979; Kuniansky, 1989). Most estimates are between 4 and 7 percent of precipitation (Mace and others, 2000). However, the recharge dynamics in the District are quite different than the Trinity Aquifer throughout much of the Hill Country due to the rapid recharge that occurs through large recharge features, which are present in many areas of the District, but most prevalent in the Cibolo Creek area. When Cibolo Creek has water in the stretches along northern Bexar County, the losses of water from the creek are substantial and serve as a significant recharge source to the Trinity Aquifer in the District. Although this rapid recharge can occur in other isolated areas of the Trinity Aquifer in the Hill Country, it is a dominant recharge mechanism in the District. The substantial volume of recharge that periodically occurs during wet periods and flooding along Cibolo Creek creates relatively large variations in water levels in the Trinity Aquifer in the District. When water levels are high in the District, there is a natural hydraulic gradient that drives groundwater laterally to the southeast into the Edwards Aquifer. After groundwater is recharged to the aquifer, the karstic nature of many of the formations allow the rapid movement of groundwater through the aquifer. The result can be large fluctuations in water levels in wells as groundwater moves quickly through the aquifer. Dolomitic Limestone Fossiliferous Limestone Shale and Sandstone Discharge from the Trinity Aquifer - When water levels are high in the District, there is a greater driving force to move groundwater laterally to the southeast into the Edwards Aquifer. While the Edwards Aquifer does receive large volumes of water from the Trinity Aquifer, water wells are also a primary source of discharge from the Trinity in Bexar County. Historic pumping from the Trinity Aquifer within Bexar County has increased over time, from approximately 11,000 acre-feet in 2009 to greater than 23,000 acre-feet per year since 2016. Production from wells can vary significantly based on water levels in the Trinity. Water demand will continue to increase in the Hill Country, and this may add more pressure to increase groundwater production from the Trinity Aquifer in the District. Production from the Trinity Aquifer is primarily used for municipal purposes, with some production for domestic, irrigation, livestock and mining. More than 80 percent of the current groundwater production from the Trinity in the District is used for public water supply.

  • CONTACT US | TrinityGlenRoseGCD

    This is the Contact Page for the Trinity Glen Rose District. CONTACT US Trinity Glen Rose Groundwater Conservation District 12274 Bandera Rd., Ste. 106-107 Helotes, Texas 78023 Mailing: PO Box 1589 Helotes, Texas 78023 Phone (210) 698-1155 Fax (210) 698-1159 Office@tgrgcd.org Contact us First name* Last name Email* Write a message Submit

  • DROUGHT INFORMATION | TrinityGlenRoseGCD

    Take advantage of the Trinity Glen Rose District's conservation program incentives. DROUGHT INFORMATION TGR Board Adopts New Drought and Conservation Management Plan The Trinity Glen Rose District Board adopted amendments to its Drought and Conservation Management Plan at its October 2024 board meeting. Click the link below to download and view the plan. TGR Drought and Conservation Management Plan Managing Drought PDF TGR District Moves to Drought Stage 3 Current Drought Stage: Stage 3 as of November 1, 2024 With water well levels already near historic lows and fall rainfall deficits at around five inches, the Trinity Glen Rose Groundwater Conservation District (TGR) declared STAGE 3 water restrictions in compliance with the District’s Drought Contingency Plan effective as of Friday, November 1. “We are seeing very negative trends in our Trinity Aquifer monitoring water well levels continue. Additionally, we’re seeing that same type of problem with the Edwards Aquifer,” said TGR General Manager Amanda Maloukis. “So as the Edwards Aquifer Authority is considering for the first time ever declaring Stage 5 of their drought plan, we know that it is critical for us to declare Stage 3 of our drought plan. These two drought stages are the highest levels of required conservation measures and they’re being invoked due to our persistent drought which has prevented water wells from replenishing to get us back to somewhat normal water levels.” Since September 1, San Antonio has recorded a little less than 1.5 inches of rain. That’s 5 inches below average for the first eight weeks of fall. This is also the driest start to fall since 2008 which was also one of the area’s toughest droughts. As of now, it has been two months since any rain has fallen in San Antonio. Given those very dry conditions, the current US Drought Monitor lists the majority of Bexar County as being in (D3)-Extreme Drought . “How can people help our aquifers? First of all, the growing season has stopped, so there should absolutely be no lawn watering happening,” Maloukis stated in her call to action. “Even though our Stage 3 irrigation measures limit watering to once every other two weeks, that restriction is really written for summer months when landscapes do need a little water to stay alive. So, please, turn off all sprinkler systems and hand water only where and when necessary. Then, we would ask families to talk about conserving water. We can save a lot of water by taking short showers, washing only full loads of clothes and dishes and never just letting a faucet run. You must have an active purpose for using water to turn the faucet on.” Maloukis concluded by reminding people that droughts are a part of living in South Texas. And, at some point, those droughts end with plentiful rainfall. But, until that much needed precipitation returns, it is up to every family and business operation to take these water conserving measures seriously. The conservation measures outlined and strongly encouraged under TGR’s Stage 3 drought plan include all conservation measures from Stage’s 1 and 2 unless replaced by Stage 3: Watering with an irrigation system, sprinkler, or soaker hose is allowed once every other week, from 5- 10 a.m. and 9-12 p.m. on your designated watering day as determined by your address. Watering with drip irrigation may run one day a week, on Friday, from 5-10 a.m. or 9-12 p.m. Watering with a hand-held hose may occur any time and any day. Water use reduction goal of 15%. Installing newly planted landscapes is highly discouraged. Aesthetic fountains should not be utilized unless an alternative source of water other than groundwater. Do not wash parking lots, driveways or sidewalks unless health and safety is a risk. The use of a commercial car wash facility that recycles water is allowed any day. Alternate sources of water are highly encouraged such as rain water harvesting, reclaimed condensate, reclaimed grey water, recycled water, and other non-groundwater sources. Below is a chart outlining the day of the week your household is allowed to water, which is every other week during Stage 3 drought restrictions. But, as mentioned, with the landscape growing season over for 2024, there should not be any lawn watering with sprinkler systems occurring now. You can download a complete copy of TGR’s Drought Stage Plan and the District’s latest drought brochure “Managing Drought” at our website. www.trinityglenrose.com/drought-information . The TGR Conservation page has additional ways each household can help save water during these very dry weather conditions. You can find those tips at the link . Drought and Weather Resources TWDB Drought Monitor/Drought Resources Page TWDB Precipitation Stations/TEXMESONET Map Palmer Drought Severity Index Map Texas Drought Monitor Map Historical Palmer Drought Indices NOAA Precipitation Estimates Map NOAA Soil Moisture Map Texas Burn Bans Map TCEQ List of PWS's Limiting Water Use to Avoid Shortages TWDB Flood Viewer TWDB Drought Monitor Map Click on the image below for most up-to-date information. Drought map on 10-31-2024

  • EVENTS | TrinityGlenRoseGCD

    The Trinity Glen Rose District partners with many great entities to teach water conservation and pollution prevention. TGR EVENTS 2021 Watersaver Landscape Tour Videos The Trinity Glen Rose District cosponsored the 2021 Watersaver Landscape Tour. This event was held online and more than 350 people took time to watch. In case you missed it, you can watch the tour videos featuring some beautiful, water-saving landscapes from around San Antonio. We'd like for you to come away with a few ideas on how you can improve the look and feel of your yard while substituting native plants for grass and other nonnative plants that require lots of water to keep healthy. Many thanks are due to the homeowners who agreed to not only let us show their yards but also participate in the videos. They are quite informative. One last item...you can download the plant lists we put together for each yard, which should help you next time you visit a nursery to pick the right plants for your home's landscape. We hope you enjoy these videos as much as we did in putting them together. Download the plant list here. 2019 Watersaver Landscape Tour - Photos Trinity Joe 3V3A8317 Trinity 1/32 The Trinity Glen Rose District cosponsored the 2019 Watersaver Landscape Tour. This tour offered residents the opportunity to visit various landscapes in various parts of the city to see how they can improve the look of their yards while saving water. Click the arrows to view the photos.

  • LANDOWNER OPPORTUNITIES | TrinityGlenRoseGCD

    Looking for water data? You've come to the right place. You can find water well locations and data at this page. LANDOWNER OPPORTUNITIES Texas Well Owner Network Sponsoring Special Water Quality Testing Event for Water Well Owners The Texas Well Owner Network is sponsoring a special water quality testing event for local water well owners. Well owners can drop off private well water samples for screening on: October 7 between 8:30 a.m. and 11:00 a.m. San Antonio River Authority, 100 E Guenther, San Antonio, TX 78204 The well sample results will be shared at a workshop on: October 9 from 9:00 a.m. to noon San Antonio River Authority in San Antonio For More Information, Contact: John Smith 979-204-0573 john.smith@ag.tamu.edu About this Special Event The “Well Informed” Texas Well Owner Network (TWON) program is an educational program that gives well owners the opportunity to have their well water samples screened for common contaminants including fecal coliform, E. coli bacteria, nitrates, arsenic and high salinity. The screening of the water samples is followed by a one-hour explanation of the results, water well protection practices and focuses on wellhead protection and recommendations for remediating well contamination. Download the flyer here. Camp Bullis Regional Conservation Partnership Program LAND MAITENANCE FUNDING FOR 2025 Land maintenance funding for landowners is available through the Camp Bullis Regional Conservation Partnership Program (RCPP) for land management practices that help reach your land stewardship goals. Conservation work in this region also supports the mission and training capabilities of Joint Base San Antonio-Camp Bullis and the goals of the Camp Bullis Sentinel Landscape Partnership. The program will run throughout 2025. More than $2 million in funding has been utilized for conservation activities that include improving riparian areas, water quality, native plant communities, soil health, rangelands, and wildlife habitat. So far, there have been 914 acres of Hill Country land protected through this program. New Funding Available for the Camp Bullis Regional Conservation Partnership Program - Applications Being Accepted Starting July 1, 2025 Another round of federal funding is now available to landowners for land management projects through the Camp Bullis Regional Conservation Partnership Program (RCPP). To be ready to award projects by the end of this year, the RCPP is seeking statements of interest from landowners in the Camp Bullis area. Here is the timeline for those applications. 1-July-2025 - RCPP Easement – Applications Open. 15-August-2025 - RCPP Easement – Applications Close. 1-September– 12-September - Review applications by partners and RCPP conducts some information gathering 22-September-2025 - Landowners notified of selection to Selected landowners will fill out a full application. 3-November-2025 - Deadline for full application This funding round could reach $3 million. You can download the flyer here. CLICK HERE TO ACCESS FORMS AND MORE INFORMATION Camp Bullis Regional Conservation Partnership Program Learn about Land Management Priorities The priorities of this project involve addressing ecological resource concerns that will benefit both the mission of Joint Base San Antonio-Camp Bullis and the land stewards and residents in the project area. Land Management Resource Concerns The ecological concerns and priorities in the project area are water quality and conservation, plant health and restoration of our native plant communities, soil quality, and improving habitat for grazing and wildlife. Land Management Practices To address these resource concerns, eligible practices are selected as the tools and processes to get conservation on the ground. Eligible land management practices will focus on water quality and riparian health including planting and protecting vegetative buffers around waterways. Waterways that are named and flowing into Camp Bullis will have a higher priority for funding. Other practices will be used to improve and restore upland communities. These practices will include prescribed grazing, selective brush management, and native plant restoration for wildlife and pollinator species. Practices will be also used to improve soil health. Our project specialists will meet with you and design a conservation plan that will specifically meet your needs and the needs of the land. Funding will be attached to these conservation plans to aid in implementation. Read more by clicking on this link. Program Partners Texas A&M Natural Resources Institute Joint Base San Antonio Trinity Glen Rose Groundwater Conservation District The Cibolo Conservancy Land Trust Edwards Aquifer Authority Greater Edwards Aquifer Alliance Green Spaces Alliance Hill Country Alliance The Nature Conservancy of Texas Texas Agricultural Land Trust Camp Bullis RCPP Project Area The project area is outlined in red.

  • NEWS | TrinityGlenRoseGCD

    Learn about the latest news from the Trinity Glen Rose District. TGR NEWS - November 2025 If you missed a previous issue of our newsletters, just click here to read and or download those issues. This TGR Resource newsletter was published in November, 2025 La Niña is On Its Way TGR District remains in Stage 3 drought restrictions As the La Niña weather pattern makes its presence felt in the United States, national forecasters have released new predictions about how this climate pattern will shape our weather through the next three months. The Climate Prediction Center, part of the National Oceanic and Atmospheric Administration (NOAA), recently published its seasonal outlook for November 2025 through January 2026. Across much of the country — especially the South and Southwest — temperatures are projected to be milder weather compared to typical seasonal averages through the start of the new year. Additionally, below-average rainfall is expected across the southern tier of U.S. That could spell trouble for areas already suffering from drought. Large parts of the South and Southwest are currently classified as being in “severe” to “extreme” drought. Some of these regions, which includes Bexar County and the Texas Hill Country, depend heavily on winter rainfall to recharge their water supplies. Typical La Niña winter impacts include additional precipitation for the Northwest and Midwest to the Ohio Valley and colder than normal temperatures across the north-central U.S. The Southern U.S. experiences drier conditions and warmer temperatures. You can read an extended story here about the cyclical La Niña weather pattern and what its impacts for winter 2025-2026 will be across the country. TGR Board Approves Rules Updates The TGR Board of Directors held a public hearing in October on amendments to its District Rules for improved management of the Trinity Aquifer and approved those changes. “The rules updates will help us better align our work with the region's water planning outlook as developed by the State of Texas,” said TGR General Manager Amanda Maloukis. “The changes to the Rules also set us up for improved practices to be better stewards of the Trinity Aquifer as we develop long term goals for groundwater management designed to protect our groundwater resources for future generations.” Highlights of the changes include, statutorily required changes made by the most recent 89th Texas Legislature, as well as criteria for water wells on small tracts that maintain groundwater production in relation to their limited property right acreage, in order to protect neighboring wells, property rights, and aquifers, without requiring well permits, meters, nor production fees. You can read and download a copy of the Trinity Glen Rose District’s Rules at this link. Texas Voters Approve $20 Billion Water Resources Development Plan With the population projections for Texas continuing to surge, state leaders put a major water planning and investment program on the ballot in early November which would address potential water shortages over the coming decades. With a 71 percent approval, voters across the state gave the go ahead for that $20 billion plan to invest in the State’s water infrastructure. Beginning in 2027, $1 billion per year in sales tax revenue will go toward the Texas Water Fund. That money will be used for developing new water sources, repairing existing infrastructure and flood control projects. “Texas is facing more than $200 billion in wastewater and flood infrastructure needs in the next 50 years,” Sarah Kirkle, the director of policy and legislative affairs at the Texas Water Association, said. “So this $20 billion is a really important first step.” The first round of the new funding, a total of $2 billion per biennium, will have to be appropriated by the legislature in the 90th legislative session, which will take place in 2027. Once approved, the Texas Comptroller will transfer the dedicated funds to the water fund in 2028. The funds can only be transferred if the sales tax revenue exceeds $46.5 billion in a single fiscal year. If the revenue does not reach that threshold, then no money will be transferred to the Water Fund. Today, Texas is home to about 31 million people. By 2070, that number is expected to expand to 50 million. You can read much more about the Texas Water Fund at this website. Water News from Around the State TWDB to Hold Water Project Funding Meetings The Texas Water Development Board (TWDB) is inviting people to an in-person workshop with valuable information and one-on-one opportunities to discuss regional water project needs. The TWDB program coordinators will be available at the workshop to discuss specific projects and answer questions about financial assistance programs for drinking water, wastewater, stormwater, and flood infrastructure projects. Funding Programs include: the Drinking Water State Revolving Fund (DWSRF), Clean Water State Revolving Fund (CWSRF), State Water Implementation Fund for Texas (SWIFT), Texas Water Development Fund (DFund), Flood Infrastructure Fund (FIF), Texas Water Fund, and more. The workshop will include handouts and helpful resources about the TWDB financial assistance programs. Here is a list of meetings being held in the South Texas area. Medina County - Hondo, 11/20/25 Uvalde County - Uvalde, 2/12,26 You can find out more information and a sign up form for the meetings. New Leadership at TWDB and TCEQ Texas Governor Greg Abbott has announced several key leadership appointments at Texas’ water and environmental agencies. Brady Franks and Ashley Morgan have been appointed to the Texas Water Development Board. Franks, a former director in the Governor’s Office, brings more than a decade of experience in budgeting, planning, and strategic operations. Morgan, an attorney, has served in multiple state agencies, including the Governor’s Office, Office of the Attorney General, Railroad Commission of Texas, and Texas Commission on Environmental Quality (TCEQ). Franks’ term extends through 2031 and Morgan’s through 2027. Read the full announcement for Franks here and for Morgan here. Tonya Miller has also been appointed to serve as a Commissioner of the TCEQ through 2031. Miller previously served on the TWDB Board and brings extensive experience in environmental and energy leadership, including roles with the Lower Colorado River Authority, the Texas Solar Power Association, and several divisions within TCEQ. Her appointment marks a return to the agency and underscores her long-standing commitment to environmental stewardship. Be Prepared for a Freeze While cold weather makes an appearance in South Texas for a limited number of weeks during the year, we can actually get several days of freezing weather during that time. And, when that happens, you want to be prepared to protect those beautiful native plants you’ve enjoyed all year long. “There are some native plants that will just shrug off a hard freeze, hibernate and bloom in the spring,” said Emily Green, TGR District program manager. “However, there are some plants that do need some protection when we get several days in a row of freezing weather. Thankfully, there are some simple ways to accomplish that goal.” Here is how freezing weather can damage a plant. According to Kimberly Mayer, a horticulturist with Texas A&M AgriLife Extension, when the water inside plant cells freezes, ice crystals form and can damage the cell walls, killing the cells. As temperatures rise, fluids leak out of those cells and they begin to decay. Freeze damage first appears as dark, water-soaked tissues that later turn brown or black and dry up. There are two types of freezes that South Texans should prepare for. Most people are familiar with the term blue norther, a windy cold front that moves south from Canada through the Great Plains. These northers can bring high winds, deep plunges in temperatures and precipitation which can turn into ice. “Radiative frosts” occur when the sky is clear and winds are less than 4 mph. During the day, the sun’s radiation heats the plants and soil. At night, they lose radiation back to the sky. Plants and other objects cool faster when skies are clear because of the unimpeded loss of radiation. “Homeowners can use different types of materials to cover plants, add some water to the soil if it is dry about a week ahead of a freeze, move potted plants near a building that will radiate some warmth and build a mound of mulch around the plant’s roots,” Green explained. “The idea is to get a little bit of warmth to plants during a freeze to allow them to survive. Native plants are very resilient and will make a comeback in the spring if you just get them through those extremely cold periods during the winter. You can learn more about protecting plants and pets during a freeze at Texas A&M AgriLife Extension Service. TGR District Sill in Stage 3 Drought If you’ve been watching the Trinity Glen Rose District’s drought dashboard over the past several months, you might have noticed that Bexar County almost went from the “extreme drought” classification down a step to “severe drought” after those huge summer rains in July. But, the past few weeks, the drought map has reverted to nearly all of Bexar County being classified as extreme drought. Given those facts, the District remains in Stage 3 of its drought management plan. Here are the top three ways people living in Bexar County can reduce their water use to help protect Trinity Aquifer well levels from dwindling lower than their near historic lows being measured now. The growing season is over. So please turn off all in-ground sprinkler systems and only spot water by hand if absolutely necessary. Fix any water leaks you might have at your residence. Try not to do extensive planting now. New plants require extra watering to establish their root systems. Weather forecasts for the coming months are showing South Texas could be facing slightly lower than normal rainfall. That will obviously not help the current drought conditions, so we all need to pitch in to help preserve our local aquifers by conserving the water they provide. GARDENING GO Check out what’s happening in this edition of your favorite landscape show - Go Gardening! Go Gardening Teaches Fall Planting, Design The November Go Gardening Show closes out Season 4 and we want to thank the Gardening Volunteers of South Texas for their initiative and all the contributors for making the year a great one. To wrap up Season 4, the Go Gardening production team headed over to the home of Dana Nichols, who recently retired from the San Antonio Water System after spending a career there in the water conservation department. She is a landscape expert and a lot of fun to be around as you will see in segment one. She recently had a neighbor remove a huge oak tree which shaded her entire front yard. So now she's thinking about native plant changes which do better in full sun. We had a great time and learned a great deal from Dana. Next, Mark Peterson, met up with the president of the Gardening Volunteers of South Texas, Andrew Waring, to talk about ways to protect those beautiful native plants from a serious freeze if we get one of those this winter. Mark and Andrew spent the last few minutes of the show expressing the Go Gardening Team's appreciation to viewers and show sponsors. Click here to watch the latest Go Gardening Show. You can watch previous Go Gardening shows at: https://www.youtube.com/@gardeningvolunteersofsouth5703/videos. TGR's Drought Tolerant Plant Picks Having a water-saving garden doesn’t mean you have to sacrifice color and even year round color in your landscape. Once the temperatures cool, any of the native perennials can go in the ground for next year’s show. Here are two great suggestions. The Prairie verbena , Glandularia bipinnatifida (top photo), is an annual or short-lived perennial that reseeds readily. Once established, its long bloom period will provide color when other wildflowers have faded. Does well in both sun and part shade and doesn’t mind our caliche soils. As with most natives, only water when the plant looks sad in the morning, not when they look droopy in the evenings after a hot day. May be found at local nurseries and regional native plant sales. The native Tropical sage , Salvia coccinea (bottom photo), checks a ton of boxes: long-blooming, perennial, reseeds readily, adds vertical interest, and a favorite of butterflies and hummingbirds owing to its bright red, tubular flowers. The pungent foliage makes it a less-preferred snack for our resident deer. Tolerates sun to shade as well as a spectrum of soil and water conditions. Just trim back spent flower heads to promote bushier growth. Easily found at our local nurseries. DROUGHT DASHBOARD With the severity of the current drought conditions expected to continue into 2026, the TGR District is providing up to date information about these conditions affecting local aquifers and how you can help. At the TGR Drought Dashboard on the District’s website home page, you will find the current U.S. drought monitor map, the rainfall chart from the National Weather Service, current drought news articles and a link to some great water conservation recommendations at our Don’t Waste the Wet Stuff page. Just click on this link to check it out. DID YOU KNOW? TGR That’s a lot of water… Groundwater supplies approximately 55 percent of the water used in the State of Texas each year. Roughly 15 million acre-feet of water is pumped from aquifers like the Trinity Aquifer, Edwards Aquifer, Carrizo Aquifer and others. That equates to nearly five trillion gallons of water. Here’s the equation. One acre-foot = 325,851 gallons. Multiply that number by 15,000,000 acre-feet to get 4,887,765,000,000. NEW S BRIEFS TGR District Email Address We are in the process of updating our IT system which will include a new email for the office. That new email address is: office@TGRGCD.org . Call to Set Appointments with TGR District Staff If you need to meet with the TGR District staff, we ask that you call to make an appointment so we can make sure you connect with the appropriate person who can answer questions and/or resolve problems. Call us at (210) 698-1155. Download this quarter's TGR Resource Newsletter here.

  • GO GARDENING SHOW | TrinityGlenRoseGCD

    Here you will find the latest research by the Trinity Glen Rose District in our effort to learn about the Trinity Aquifer. Watch the Go Gardening Show - Season 5 - Episode 1 Play Video Facebook Twitter Pinterest Tumblr Copy Link Link Copied The Go Gardening Show is a project that is being produced by the Trinity Glen Rose Groundwater Conservation District and Gardening Volunteers of South Texas. Go Gardening is also made possible through our co-title sponsor Edwards Aquifer Authority and San Antonio River Authority. You can now watch those Episodes on GVST's YouTube channel. Go Gardening Show - Season 5 - Episode 1 Welcome to Season 5 of the Go Gardening Show! To kick off the new year, the Go Gardening crew visited one of the latest landscape projects by the talented designer Luke Hoy. Luke is a huge supporter of homeowners reworking their landscapes using native plants to save water and create a yard that can more readily survive and thrive in the South Texas heat. But, he has a priority list for people to consider when changing out their landscapes, one of those priorities being the use of evergreen plants. Even in the dead of winter and after a couple of freezes, this landscape you will see in this segment looks really good. Check it out. Next, we know that February and March are good times of the year for pruning trees and plants. But there are some critical techniques to use when doing so and some things to avoid to make sure your plants/trees grow properly in the spring. Lee Marlowe, a true Go Gardening friend, took us on a short tour of Confluence Park where she and Go Gardening host Mark Peterson actually did some pruning work on some small trees at the park. There is also a "bonus segment" for you to watch at the end of their pruning demonstration. We're glad to be back for a great 2026 so let's get out there and garden, and save some water! Go Gardening's mission is to help people conserve water in the Edwards and Trinity Aquifers by teaching homeowners how to convert turfgrass areas to low-to-no water use landscapes featuring native plants.

  • PROGRAMS | TrinityGlenRoseGCD

    The Trinity Glen Rose District partners with many great entities to teach water conservation and pollution prevention. Pollution Prevention - See Park Slide Shows Below Practicing Pollution Prevention Each Day Over the next few months, the Trinity Glen Rose Groundwater Conservation District is going to be featuring some of the beautiful parks that are located within the District’s boundaries. The bottom line is that parks, water and pollution prevention go hand-in-hand. So, the more you know about how those three work together, the more likely you’ll be to help prevent pollution from getting into our local rivers and aquifers. So that’s why we’re calling this series “Learn and Live.” Each month, we will inform you about one of the must-see parks in Northern Bexar County. And with that learning, we hope you will not only want to visit that park, but you’ll also want live your life by developing the best pollution prevention habits that researchers have developed so far. Learning About Pollution Prevention Historically, cities have paved roadways, sidewalks, trails, parking lots, sports courts, alleys, driveways, and other surfaces to reduce the annoyance and cost of slippery mud and blowing dust. Unfortunately, having so many hard, water-repelling surfaces (along with a vast number of urban rooftops) can be environmentally harmful. After it rains, vast amounts of water, now called “stormwater,” will collect in these areas, pick up the grease, grime and other pollutants that are deposited on them each day, and then head for a water source like a creek, river or aquifer. Here are some of the ways dirty stormwater can pollute a water supply: most stormwater runoff escapes natural cleansing by plants, rocks and soil; without nature slowing down the stream of water after a rain, higher amounts of water are funneled to local streams; urban streams become prone to flash flooding from rapid runoff, resulting in severe scouring, erosion, and reduction of plant life; once stream beds are scoured, flooding becomes more common. The solution is to hold back the water where it hits, slow it down so that the destructiveness of erosion and contaminants is controlled, and that it is naturally cleaned it before it reaches a waterway or aquifer recharge feature. So, now that you’ve learned how unabated stormwater can create flooding and pollution issues for our aquifers and streams, you can also understand why maintaining and increasing large natural areas like parks is so important to our community. The important point to never forget is that the less runoff, and the slower the runoff we have, the less damage there is to rivers and aquifers and the overall environment. Living Pollution Prevention Here are the Top 6 Pollution Prevention Habits You Should Develop Practice water conservation in your home each day. The less water you use, the more water is left in the Trinity Aquifer for future use. Practice energy conservation in your home each day. Large amounts of water are needed to cool power plants that provide electricity to our city. Less energy production requires less water to be used. Use non-toxic cleaning chemicals in your home. Never dump oil or others types of solvents on the ground or in the street where they can run off into a stream or an aquifer. Use only environmentally-safe weed-killers and fertilizers on your landscapes. Always pick up your pet's waste and dispose of properly. Pet waste that runs off into a creek or stream only increases the bacteria levels in that body of water. Enjoy the parks and advocate for more green spaces in your communities. “Learn and Live” at Stone Oak Park 3V3A0300 IMG_6942 3 3V3A0119 3V3A0300 1/28 Numerous natural areas and community parks beautify Northern Bexar County where the Trinity Glen Rose Groundwater Conservation District (TGR) works to preserve and protect the Trinity Aquifer each day. In addition to these parks’ aesthetic value, they also play a major part in preventing pollution from entering the Trinity Aquifer and Edwards Aquifer which are both critical to the water supply in Bexar County. To highlight pollution prevention message, TGR is bringing its constituents an informative series about the six major parks and natural areas in the district. This month, we are highlighting Stone Oak Park located at 20395 Stone Oak Parkway. Stone Oak Park features a 3.2-mile loop trail located in the heart of the Stone Oak neighborhood. Despite its urban setting, park designers succeeded at creating a very rustic feel as the trails wind through some traditional South Texas hill country scenery. Currently, there are some beautiful wild flowers dotting the trails, and with the recent rains, the park is quite green. The park also contains some interesting sculpture art and some work out stations (push ups, site ups, pull ups) for those looking for an additional level of exercise. The trails are rated as moderate, and dogs are also welcome but owners must be keep them on leash. “Learn and Live” at Panther Springs Park Panther Springs Park Panther Springs Park Panther Springs Park Panther Springs Park 1/21 Panther Springs Loop is a 3.6-mile lightly trafficked loop trail located near San Antonio, Texas that features beautiful wild flowers in the spring, hill country type wooded areas and many beautiful open meadow-like vistas. The trails are paved and considered good for all skill levels of hikers, walkers and runners. The park, which opened in March of 2015, consists of 279 acres which were donated by Dan Parman and the San Antonio River Authority (SARA). The dog park which is located near the entrance of the park includes areas for larger dogs and one for smaller ones. Bird watchers have documented 46 different species in the park to include the Greater Roadrunner, two species of hawks and numerous other types of smaller, colorful birds. The San Antonio River Authority collaborated with the City of San Antonio in the development of Panther Springs. SARA’s portion of the project included design and construction work to improve the water and sediment conveyance in the existing natural channel. The agency continues to monitor the stream for changing conditions as the landscape slowly changes over time. Preserving the community’s natural areas goes a long way toward helping efforts to maintain excellent water quality in local aquifers and other waterways. That is why the Trinity Glen Rose District is urging you to learn about the parks and to live a little by visiting each one to experience the environmental beauty and ecological benefits they provide. “Learn and Live” at Friedrich Wilderness Park Windmill along Water Trail woods 1 bridge 1 Windmill along Water Trail 1/23 Numerous natural areas and community parks beautify Northern Bexar County where the Trinity Glen Rose Groundwater Conservation District (TGR) works to preserve and protect the Trinity Aquifer each day. In addition to these parks’ aesthetic value, they also play a major part in preventing pollution from entering the Trinity Aquifer and Edwards Aquifer which are both critical to the water supply in Bexar County. To highlight pollution prevention message, TGR is bringing its constituents an informative series about the six major parks and natural areas in the district. This month, we are highlighting Friedrich Park located north of Loop 1604 on Milsa Drive. Friedrich Wilderness Park offers approximately 10 miles of hiking trails with varying degrees of difficulty. It is home for rare birds, terrestrial orchids, steep hills and deep canyons. It is internationally known for bird watching. Perched on the edge of the Balcones Escarpment, Friedrich is a nesting site for the endangered Black-capped Vireo and the Golden-cheeked Warbler. In 1971, Norma Friedrich Ward bequeathed 180 acres of land on Heuermann Road near Leon Springs to the City of San Antonio for use as a public park. She also gave $100,000 to make improvements to the land. It was Mrs. Ward’s wish that the natural vegetation and native trees and shrubs be protected and that native birds and wildlife be protected and encouraged to use the park as a sanctuary. The following year, Wilbur Matthews and Glen Martin donated another 52 acres to enlarge the park according to the same guidelines specified by Mrs. Ward. The park was developed with a grant from the Texas Parks and Wildlife Department and was dedicated on August 31, 1978. Preserving the community’s natural areas goes a long way toward helping efforts to maintain excellent water quality in local aquifers and other waterways. That is why the Trinity Glen Rose District is urging you to learn about the parks and to live a little by visiting each one to experience the environmental beauty and ecological benefits they provide. For reservations and more information about the Friedrich Wilderness Park, you can visit the park’s website here . Come “Learn and Live” at Eisenhower Park Eisenhower old fence Eisenhower Park Sign Eisenhower Sunset 2 Eisenhower old fence 1/20 Numerous natural areas and community parks beautify Northern Bexar County where the Trinity Glen Rose Groundwater Conservation District (TGR) works to preserve and protect the Trinity Aquifer each day. In addition to these parks’ aesthetic value, they also play a major part in preventing pollution from entering the Trinity Aquifer and Edwards Aquifer which are both critical to the water supply in Bexar County. To highlight pollution prevention message, TGR is bringing its constituents an informative series about the six major parks and natural areas in the district. This month, we are highlighting Eisenhower Park located north of Loop 1604 on NW Military Highway. Dwight D. Eisenhower Park is a 320-acre park managed by the City of San Antonio containing excellent examples of Hill Country landscapes, including wooded dry creek beds and rocky canyons. The park features more than 6 miles of paved and unpaved trails. There are seven different trails in the park most of which are paved. The 2.5 mile Hillview Trail circles the perimeter of the park and leads to the observation tower located about midway through the hike. The one-mile Cedar Flats Trail runs through the heart of the park and contains a combination of paved and rugged terrain. All of the trails have plenty of signage posted and many of the plants and flowers you will see are marked as well. Eisenhower Park is pet friendly, but is a designated natural area park which means roller blades, skateboards and bikes are not allowed on the trails. There are several pavilions in the park for barbecues and picnics that are located near the entrance of the park. Various park amenities are available for rental and you can learn how to make a reservation at this link. The City of San Antonio also offers various types of classes in the parks and you can learn about them at this link. Preserving the community’s natural areas goes a long way toward helping efforts to maintain excellent water quality in local aquifers and other waterways. That is why the Trinity Glen Rose District is urging you to learn about the parks and to live a little by visiting each one to experience the environmental beauty and ecological benefits they provide. You can learn more about Eisenhower Park here. Government Canyon State Natural Area Government Canyon Cover 3V3A6961 3V3A7100 Government Canyon Cover 1/31 Government Canyon State Natural Area is part of the Texas State Parks system. It is designated a natural area rather than a state park because its primary focus is protection of the property's natural resources. Given that designation, access and recreational activities may be restricted if the Texas Parks & Wildlife Department (TPWD) deems such action necessary to protect the environment there. The reserve is located in northwestern Bexar County inside the Trinity Glen Rose Groundwater Conservation District’s boundaries. It protects a large, relatively pristine tract of Hill Country terrain that is home to numerous and diverse species of plants & wildlife and the upper Culebra Creek and Leon Creek watersheds. The approximately 12,000 acres of land Government Canyon State Natural Area occupies was originally purchased to protect the critical aquifer recharge zone which diverts rainfall into the Edwards Aquifer, the main source of drinking water for San Antonio. First opened to the public in October, 2005, Government Canyon State Natural Area offers more than 41 miles of trails. Visitors can camp, attend a program or guided hike, geocache, picnic, take nature photos and look for birds and other wildlife. For those looking for a place to go birding, Government Canyon is a good place to find the endangered Golden-cheeked warbler. One of the most visited features on the property are the dinosaur tracks which are located about 2.5 miles from the visitor’s center. Scientists believe the tracks were made about 110 million years ago. At that time, this location was actually near the shoreline of the Gulf of Mexico. The dinosaurs would walk along the moist, fine-grained mud and leave tracks which would then be exposed to the sun allowing them to dry and harden. Erosion over time have exposed the tracks for today’s people to discover, study and protect. The Witte Museum, University of Texas at San Antonio, Trinity University and Texas Parks and Wildlife are continuing to study and preserve these unique dinosaur tracks today. You can learn more about Government Canyon here. Crownridge Canyon Park Entrance Crownridge Canyon Map 3V3A6275 Entrance 1/15 Crownridge Canyon was the first City natural area developed as part of the Edwards Aquifer Protection ballot initiative. The 200-acre preserve features Level 1 ADA trails and Level 4 hiking trails through a variety of habitats. Features include a canopy level bridge overlook, beautiful forested canyon bottoms, hillside vistas, and restored grasslands. There are excellent opportunities to view the endangered Golden Cheeked Warbler during its nesting season. This park features interpretive elements highlighting local flora, fauna, geology and the aquifer recharge cycle, as well as the area’s early human inhabitants. The landscape at Crownridge feature native plants of northern Bexar county. Many are numbered and can be identified using the Natural Areas Plant Key. Crownridge Canyon Trails offer both gentle Level 1 trail surfaces and more natural and challenging Level 4 surfaces. Trail markers will soon be placed along the trails to identify native plants. Red Oak Trail: Red Oak is the lower trail loop leading to the bridge crossing Red Oak Canyon. It has a 1.3 mile stabilized base surface meeting ADA accessibility requirements. Level 1 . Bear Grass Trail: Bear Grass Trail is a natural surface, .6 mile loop in the upper part of the park. This trail is Level 4 and offers medium difficulty with few steep slopes and rocky ledges. Level 4. Pets, alcohol, bikes, and loud music are not allowed. Location: 7222 Luskey Blvd. 78256 Hours: Sunday-Saturday: 7:30 a.m. – sunset

  • RESOURCES | TrinityGlenRoseGCD

    Looking for water data? You've come to the right place. You can find water well locations and data at this page. TGR RESOURCES There are a tremendous number of resources you can access related to local, regional and state regulatory agencies which you can find here. There are also some great interactive maps here which show information about each monitoring water well in the district. Need Help with Water Quality Testing? If you feel that your water has a quality issue and you are on a municipal supply, please contact your purveyor (e.g. City of Fair Oaks Ranch, Grey Forest Utilities, Southwest Water Co., Aqua Texas, SAWS, etc.). The photo above is from the Guadalupe-Blanco River Authority lab. Regional Labs Guadalupe-Blanco River Authority City of San Antonio Metro Health – (210)207-8887 (basic bacteriological testing only) Pollution Control Services – (210)340-0343 San Antonio Testing Laboratory – (210)229-9920 T.C.E.Q. List of Accredited Laboratories Need Help with Your Water Well? Regular maintenance of your groundwater well can prolong its life and protect your health and safety. The Texas Well Owners Network and other various organizations provide useful documents and criteria to evaluate the health of your well. The most requested publications for groundwater well health and maintenance can be found on the Texas Well Owner Network website . Topics include Water Well Basics, disinfecting wells, drinking water quality, abandoned wells, protecting your well during drought, and many more. Texas Well Owner Network National Groundwater Association Want to know more about PFAS and potential effects with groundwater wells, please see this handout put out by the National Groundwater Association. PFAS for Private Well Owners For a complete list of licensed well drillers , please visit the Texas Department of Licensing and Regulation website. Please feel free to contact the District for more information. Helpful Website Links Helpful Website Links National US Drought Monitor - Interactive map of the current U.S. drought status. U.S. Geological Survey State Texas Water Development Board (TWDB) TWDB Groundwater Resources Texas Alliance of Groundwater Districts (TAGD) Texas Department of Licensing and Regulation Texas Well Owners Network - Fact Sheets for Well Owners Texas Commission on Environmental Quality Texas Commission on Environmental Quality March 2023 Approved Water Haulers Regional South Central Texas Regional Water Planning Group Cibolo Center for Conservation Edwards Aquifer Authority Hill Country Alliance Greater Edwards Aquifer Alliance Local San Antonio Water System (SAWS) SAWS Garden Style San Antonio River Authority San Antonio Parks and Recreation - Parks Gardening Volunteers of South Texas Texas Agrilife Extension Landscaping

  • DISTRICT MAPPING | TrinityGlenRoseGCD

    The page presents the Trinity Glen Rose District Precinct Map. Trinity Glen Rose District Mapping This new public mapping system is part of the Trinity Glen Rose District's new database capabilities. Just click anywhere on the map below to go to the interactive map. TGR Database Training Videos The Trinity Glen Rose District database system is very detailed and deep with various types of helpful information. To make acquiring that information a little easier, we will be producing some training videos on how the public can use the system. The first video below is an overview of how to log into and navigate the system as well as some insights into where the main menus are, how to locate a particular well in the system and then how you can find detailed information about specific wells.

  • BOARD | TrinityGlenRoseGCD

    Learn about the latest activities of the Trinity Glen Rose District board of directors. TGR DISTRICT BOARD OF DIRECTORS TGR Meeting Information Date: 10:00 am, February 19, 2026 Location: District Conference Room, 12274 Bandera Road #106, Helotes, TX 78023 The board meeting agenda and other info can be found on the Board Meeting page here . Trinity Glen Rose District Precinct Map Use the map to determine which precinct you live in Dr. Stuart Birnbaum Precinct 1 Joe duMenil Precinct 2 Steven Peterson Precinct 3 Joe Silman Precinct 4 Katrina Waring Castillo Precinct 5 Use the map to locate your District when using Google Chrome, Mozilla Firefox, and Microsoft Edge. For Safari users, click here to determine the District in which you reside. Trinity Glen Rose District Board Members Dr. Stuart Birnbaum Precinct 1 Vice-Chair Joe duMenil Precinct 2 Chairman Steven Peterson Precinct 3 Asst. Sec./Treasurer Joe Silman Precinct 4 Treasurer Katrina Waring Castillo Precinct 5 Secretary Dr. Stuart Birnbaum - Precinct 1 (Vice-Chair) - Term expires 05/2028 Dr. Stuart Birnbaum is elected representative and was appointed to the TGR Board in December 2020 and took his oath of office in January. He will be finishing out the three-year term of office formerly held by Abigail Bush. Birnbaum is an emeritus associate professor in the department of geological sciences at the University of Texas at San Antonio where he conducted research in sedimentology and microbial geochemistry. He earned his B.S. degree in geology from the State University of New York at Stony Brook and his Ph.D. in geology from Cambridge University in the UK. Since retiring Birnbaum has been actively engaged with Citizens’ Climate Lobby serving as a co-leader of the San Antonio chapter of CCL. He is also a Board member of the Scenic Loop – Helotes Creek Alliance, a local environmental organization, and is an En-ROADS ambassador with Climate Interactive. Precinct 1 boundaries cover the area near the City of Helotes. See the map above. Joe duMenil - Precinct 2 (Board Chairman) - Term expires 05/2028 Joe duMenil is the elected representative and currently serves as the Board Chairman. He has served the District since April 2011. Mr. duMenil has over 45 years of experience in the development and management of public infrastructure. He gained his experience by serving 20 years in the U.S. Army Corps of Engineers and over 25 years in both public and private sectors. He currently is assisting Doucet, a Kleinfelder Company in their business development pursuits in Central Texas. He brings to the District a vast knowledge of local issues and relationships with local governmental entities. Mr. duMenil has a unique quality that allows him to connect with both individuals and community groups. He is a respected and trusted resident of the City of Fair Oaks Ranch since 2005. His successful career and tenure on the Board is based on communication, cooperation and collaboration, each being essential elements in the efficient stewardship of public monies and the pursuit of the District mission. Precinct 2 encompasses the largest geographic area in District with the western boundaries being Highway 16 in the Helotes area, Camp Bullis on the east, Loop 1604 in the south and the Bexar County line to the north. This Precinct also extends into Kendall and Comal Counties within the City Limits of Fair Oaks Ranch. Also included in the Precinct 2 boundaries are the City of Grey Forest, a portion of the City of Helotes, numerous residential and commercial communities and the environmentally protected Government Canyon Nature Park. He holds a B.S. degree in Construction Science and a M.S. degree in Construction Management from Texas A&M University. Mr. duMenil has been a Certified Floodplain Manager since 2002 and is actively involved in several professional organizations such as Texas Floodplain Management Association, Society of American Military Engineers, Texas Public Works Association, Construction Management Association of America and American Council of Engineering Companies. Steven Peterson - Precinct 3 (Asst. Sec./Treasurer) - Precinct 3 term expires 05/2026 Steven Peterson is a native San Antonian residing in Kinder Ranch. He is a graduate of Texas A&M and served in the San Antonio Police Department for 34 years. He has also served 7 years as a City of San Antonio District 10 Director of Neighborhood Engagement and Military Affairs. Now happily retired. He serves on this board as well as the board of the Master Leadership of S.A. Alumni Association. The largest development in Precinct 3 is Timberwood Park, where the lot sizes are larger than the typical home-sites. Camp Bullis and Camp Stanley cover most of the western portion of the district. Timberwood can be found on the east. The southern boundary runs up against the Stone Oak area and the Cibolo Creek forms most of the northern boundary. Eisenhauer Park is a highly used urban park in Precinct 3, and Panther Springs Creek Nature Area is a family friendly park residing in the district. A unique aspect of Precinct 3 is that three creeks, Leon, Salado, Panther Springs, run through the area. These tributaries are often included in water quality discussions due to their potential recharge to the aquifers which underlie them. Joe Silman - Precinct 4 (Treasurer) - Term expires 05/2026 Joe Silman is a retired partner with Andersen Consulting (now Accenture) and he focused his business consulting with water, electric and gas utilities. In addition to serving on the TGRGCD board, Silman also is President of the Stone Oak POA Board of Directors. Precinct 4 is the most densely populated in the TGRGCD. It includes the growing Stone Oak area with its 27 subdivisions, plus robust business and medical developments. Additionally, the Club at Sonterra and Martin Marietta Hwy 281 quarry are located within Precinct 4. The southern boundary of Precinct 4 is Loop 1604, Wilderness Oak on the north, NW Military Highway to the west and Highway 281 on the east. Silman knows that with many homes and large water using businesses in the area, water conservation must be a high priority for all who receive their water from either San Antonio Water System Edwards Aquifer or Trinity Glen Rose wells. In the coming months, the TGRGCD will be enhancing its conservation messaging to encourage the focused stewardship of the area's water resources. Katrina Waring Castillo - Precinct 5 (Secretary) - Term expires 05/2026 Katrina Castillo serves as the Chief Data Officer (CDO) and Data Privacy Officer (DPO) for The Institute of Electrical and Electronics Engineers (IEEE), where she leads the Enterprise Data & Analytics organization. Her responsibilities span Data Engineering, AI/ML Engineering, Data Architecture, Data Analytics and Data Governance teams. Before joining IEEE, Katrina led consulting Data & Analytics practices providing strategic and operational data services to Fortune 100 clients. In addition to Data & Analytics consulting, Katrina has many years of experience leading internal application and software development teams for medium and large sized corporations. Katrina holds an Executive MBA from The University of Texas in San Antonio and a Bachelor of Science in Computer Science from The University of Texas in San Antonio. Katrina is a Certified Data Management Professional (CDMP), is certified in Artificial Intelligence Implications for Business Strategy from MIT Sloan and holds numerous technical certifications in Data and Software Development. Precinct 5 is located on the eastern reach of the Trinity Glen Rose District. It is the second largest precinct in geographic size and has a highly faulted underground structure. The PGA Village Golf Course and Marriott Resort are two of the more recognizable destinations in D5. Those developments occurred under high scrutiny from the public and have proven to be good environmental neighbors to the area. The Vulcan Quarry mines limestone in northern Bexar County and is subject to various environmental regulations due to its proximity to recharge features and aquifer water.

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Physical: 12274 Bandera Rd, Ste. 106-107
Helotes, Texas 78023

Mailing: PO Box 1589
Helotes, Texas 78023

Phone (210) 698-1155 

Fax (210) 698-1159

Office@tgrgcd.org

©2021 by the Trinity Glen Rose Groundwater Conservation District.

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