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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

Here you will find the latest research by the Trinity Glen Rose District in our effort to learn about the Trinity Aquifer. GMA 9 Board Meeting Date: 10:00 am, MARCH 31, 2026 in Boerne at the Cow Creek GCD March 31, 2026 GMA 9 Meeting Agenda GMA-9 Website ( Find more info at the GMA 9 website provided) Groundwater Management Area 9 (GMA-9) was established in 2002 and includes all or part of 9 counties in the Texas Hill Country. The Texas Water Development Board created 16 Groundwater Management Areas across Texas, each with a number of groundwater conservation districts (GCDs) included in their boundaries. GMA-9 member districts meet at least annually to conduct joint planning with the other districts in the management area and to review the management plans, the accomplishments of the management area, and proposals to adopt new or amend existing desired future conditions. The GMA 9 Committee consists of 9 GCDs, each with its own designated representatives serving as a voting member. You can obtain all GMA-9 planning, meetings and news at: www.GMA9.org. GMA-9 MEMBERS District Designated Representatives Cow Creek Groundwater Conservation District, Chair, Micah Voulgaris, Trinity Glen Rose Groundwater Conservation District, Vice Chair, Amanda Maloukis Bandera County River Authority and Groundwater District, Secretary, Hayli Hernandez, Designated Representative - David Mauk Blanco-Pedernales Groundwater Conservation District, Ron Fieseler Comal Trinity Groundwater Conservation District, Allan Brown Hays Trinity Groundwater Conservation District, Charlie Flatten Headwaters Groundwater Conservation District, Monica Thibodeaux Medina County Groundwater Conservation District, David Caldwell Southwestern Travis County Groundwater Conservation District, Lane Cockrell Alternative Representatives: Bandera County River Authority and Groundwater District, Hayli Hernandez Headwater GCD, Gene Williams Texas Water Development Board link to Groundwater Management Area 9.

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.

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.

Looking for water data? You've come to the right place. You can find water well locations and data at this page. AQUIFER SCIENCE TGR Regional Pumping Impact Study Following notification of a proposed groundwater production project in Bexar county, TGR commenced with a regional impact study through WSP to assess potential impacts. The project would include the activation of production wells located in northeastern Bexar County. Click the link below to read the report. TGR Modeling Results Final Report TGR Research and Aquifer Studies USGS Spring Survey Results Dr. George Veni Presentation on Karst Aquifer Features of the Trinity Glen Rose Aquifer

Learn about the latest news from the Trinity Glen Rose District. TGR DISTRICT NEWS 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 February, 2026 TGR Five-Year Water Plan Approved by State The Trinity Glen Rose Groundwater Conservation District (TGR) recently received approval of its new Groundwater Management Plan from the Texas Water Development Board (TWDB), which is the State of Texas agency that oversees water planning. Every five years, groundwater districts are required to develop a water management plan defining its groundwater needs and supplies for the following five years. There are also requirements for districts to outline goals for achieving results that match its water demand projections. “Our water management plan is a very detailed document outlining current and projected district population growth, Trinity Aquifer hydrology, current recharge numbers and recharge projections, how we advocate water conservation measures and much more,” said TGR General Manager Amanda Maloukis. “Additionally, we must show how our plans fit into regional Groundwater Management Area projections as well as the State of Texas’ 50-year water plan. So, one can only imagine the level of coordination and scientific analysis that goes into a process like this. Most importantly, we want the general public to know that this is all done to ensure water needed in the future will be there for families and businesses, and for protection of the ecosystem we live in.” The TGR Groundwater Management Plan can be a valuable document for those studying water resource planning and management. There are historical records, water demands for various parts of the region, detailed hydrological analyses and multiple tables of data related to water resource planning in the State of Texas. You can read and download the TGR plan at: www.trinityglenrose.com/reports . New TGR Website Pages Developed New web pages provide a detailed look at Trinity Aquifer science and recharge geology Over the past several months, the TGR staff has been working to provide an in-depth view of the Trinity Aquifer. The portion of the Trinity that the District manages in Northern Bexar County is only a small section of this 10,000-square mile water resource covering an area generally between San Antonio and Northern Dallas. So, why is it important to provide this level of information about an aquifer no one can really see? Studies over the years have shown that when the public understands where their water comes from and how it is managed, they tend to add more conservative ways to daily water use habits. And while this aquifer is enormous in geological terms, it is also finite in water supply capacity. The Trinity aquifer is a karst rock formation. It is a lower production aquifer which recharges slowly, with only an estimated 4–5% of rain recharging it. Despite its relatively 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. Aquifers replenish themselves through precipitation falling directly on the aquifer's exposed (unconfined) areas. That water seeps into the ground from rivers and ponds where the ground slopes downward. And because the Trinity Aquifer is made up of a group of aquifers, recharged water flows between those aquifers hundreds of feet below ground. There are many ways that water agencies and the public can help enhance recharge through small dams, creating berms and swales in landscapes and overall preservation of land in its natural state. You can find the two new TGR website pages at: www.trinityglenrose.com/aquifer-education and www.trinityglenrose.com/recharge-enhancement . National Groundwater Awareness Week Happening March 8-14 National Groundwater Week (GWAW) is an annual event established to highlight the responsible development, management, and use of groundwater across the country. The event is also a platform to encourage yearly water well testing and well maintenance, and the promotion of policies impacting groundwater quality and supply. Groundwater advocates across the country also use GWAW to highlight local water issues in their communities. As more than 44 percent of the population depends on groundwater as a primary water source, developing an interest in the groundwater industry is of vital importance to both the health and economy of the country. Groundwater professionals span a wide variety of careers and skills including well contractors, hydrogeologists, groundwater policy advocates, and suppliers and manufacturers of groundwater technology. GWAW also serves as an annual reminder for water well owners to test, tend, and treat their private water systems. The National Groundwater Association encourages annual inspections of private water systems by certified water well contractors to ensure systems are operating correctly and producing safe and healthy water. Well owners can find a number of tools and great information about managing their systems at: www.WellOwner.org . Additionally, National Groundwater Week can be a time for homeowners to take a look at how they use water and decide to make permanent changes in their water consumption practices. Fixing water leaks and replacing water-thirsty turfgrass with more native plants are the best two places to start. Continuing Drought Conditions are Nearing Drought of Record Status The ongoing heat was a major story in 2025. In 2024, the state broke a record for the hottest year in data going back to 1895, a record that had been set most recently in 2023. 2025 did set the record for the hottest November since 1895. But, that wasn't enough to put 2025 ahead of 2024 for the hottest year. However, 2025 did finish as the fourth hottest year, trailing only 2012, 2023, and 2024. From a drought and water supply perspective, reds, oranges, and yellows on the maps above could mean more drought-related trouble. About half the state received less than half of normal precipitation, while some of the more fortunate regions saw a 150-percent or more of normal precipitation. The 1950-1957 drought still stands as the drought of record for all of Texas. It contributed to a major demographic transition, from a state rooted in farming and ranching to the largely urban Texas of the late 20th century and has set the goalposts for water planners ever since. The 1950s drought lasted longer than the 2010-2014 drought in every climate division in the state, but by some measures the 2010-2014 drought was more severe. The 2010-2014 drought set new standards for the hottest and driest 12-month periods on record, dropped streamflow to new lows, and prompted widespread emergency actions to maintain water supplies. The current drought started around 2019, and only once since 2019 has the City of San Antonio reached an average rainfall year level. In 2025, the National Weather Service recorded about 27 inches of rain in San Antonio — but still five inches below normal. To catch up, Central Texas needs not just substantial rainfall, but at the right time and in the right places to recharge the aquifers and keep the spring-fed rivers flowing. Current measurements of the Edwards Aquifer remain about 40 feet below normal for this time of year and Trinity Aquifer monitoring wells show similar type conditions. This photo was taken in May, 2025, along the Comal River near the Landa Park entrance in New Braunfels. 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” in the fall of 2025. But, since then the drought map has reverted to nearly all of Bexar County being classified as extreme drought. Given those facts, the TGR District remains in Stage 3 of its drought management plan. The Trinity Aquifer groundwater system runs throughout much of the Hill Country, including in Kerr, Bandera, Kendall and Comal counties. It’s considered by the Texas Water Development Board to be one of the “most extensive and highly used groundwater resources in Texas.” Unlike the Edwards Aquifer, which recharges quickly with rainfall, the Trinity is made up of different layers of formations that hold water, resulting in less movement of water throughout the aquifer and slower recharge from rainfall. Unfortunately, the intermediate climate outlook suggests that things are not likely to get better. According to weather patterns and scientists who analyze such conditions, February, March and April are more likely to see below-normal rainfall in San Antonio and the Hill Country, along with above-average temperatures that increase demand and accelerate evaporation. You can read a very good story about the current drought situation at this link to an Express-News article . Also, homeowners and businesses can make positive contributions to saving water and protecting local aquifers by learning about common water conservation practices at the TGR Conservation Page . GARDENING GO Check out what’s happening in this edition of your favorite landscape show - Go Gardening! Go Gardening Season Five Now Online Go Gardening is back for a fifth season! Let’s take a look at what’s in store. 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. Click here to watch the latest Go Gardening Show. You can watch previous Go Gardening shows at: https://www.youtube.com/@gardeningvolunteersofsouth5703/videos. TGR-Sponsored Go Gardening Show Offers a Chance to Win a Front Yard Makeover To celebrate the 5th Season of the Go Gardening Show, we are giving away a front yard makeover! Registrations will run through March 13. The winner will be announced at the San Antonio Water System's Spring Bloom event to be held Saturday, March 14th. Here are the Contest Rules. Maximum of 400 square feet of landscape makeover Landscape design from a local design professional All soil, mulch and native plants will be provided Installation will be provided The selected area for makeover must not have major rock or structural removals required prior to planting. The winner must be a San Antonio resident. You can register at the Gardening Volunteers of South Texas Go Gardening website page . 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. Gulf muhly, Muhlenbergia capillaris , is a perennial grass reaching 1.5-3 feet in height. This showstopper introduces an airy, interesting texture and structure to the garden in addition to being drought-tolerant and deer-resistant. The seedheads turn a rosy pink in the fall providing a nice contrast against the yellow we so often see in fall bloomers. Frogfruit, Phyla nodiflora, is a tough perennial groundcover that can handle a wide range of conditions, including light, soil type, and water. I have found beautiful specimens growing out of scorching pavement and only receiving what little rain Mother Nature offers. Butterflies and other insect pollinators will appreciate this addition to your yard. 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 territory… The Trinity Aquifer area on the surface covers 10,692 square miles. Amazingly, the area below the surface encompasses 21,308 square miles which is roughly the size of West Virginia. The Trinity Aquifer can be found in 61 of Texas’ 254 counties and is one of the most extensive and highly used groundwater resources in the state. BRIEFS NEWS 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.

Looking for water data? You've come to the right place. You can find water well locations and data at this page. RECHARGE ENHANCEMENT From Rain to Recharge Aquifer recharge enhancement (ARE), also known as Managed Aquifer Recharge (MAR) or Aquifer Storage and Recovery (ASR), is the intentional human process of adding water (like stormwater, treated wastewater, or surface water) to aquifers to replenish groundwater supplies, buffer against drought, and improve water security. Methods include infiltration basins, injection wells, and in-channel modifications, with benefits like reduced evaporation, water treatment as it percolates, and cost-effectiveness compared to surface reservoirs. The Trinity Aquifer recharges slowly from rainfall on its outcrop areas and seepage from streams, with water moving through its complex fractures and layers, unlike the faster Edwards Aquifer, with recharge rates varying greatly by region, often only 4-6% of rain, and is affected by urban development reducing natural infiltration, making artificial recharge efforts crucial for sustainability. Watch the general water cycle 3-D model simulation below to see how precipitation falls on the Earth's surface, collects in rivers and creeks running across the land and then recharges an aquifer, like the Trinity Aquifer, through fractures and sinkholes in the riverbed. The rainfall then makes it way through various fissures in the various rock formations that make up the aquifer. Healthy soil and vegetation improve the land’s ability to absorb water. Trinity Aquifer Recharge Occurrence - How Recharge Occurs Precipitation & Streams : Rain falling directly on the aquifer's exposed (unconfined) areas, as well as water seeping from rivers and ponds where the ground slopes downward, replenishes it. Karst Features : Water travels through fractures, bedding planes, and solution cavities (karst) in the limestone, allowing for both rapid flow and localized storage. Inter-Aquifer Flow : Some water can also move from the overlying Edwards Aquifer down into the Trinity in certain areas, though this is less significant than direct recharge. Recharge rates are not uniform; some sections replenish quickly, while others take much longer, making management challenging. Common Recharge Enhancement Techniques Berms and Swales – To slow and sink water. Rock or Brush Structures – To slow and sink water. Grassed Waterways – Shaped Channels lined with vegetation that slow rainfall runoff and encourage infiltration. Check Dams – Small barriers placed in drainage ways that slow water, spread it out, and increase soak-in time. Rangeland Restoration – Improving soil health and perennial vegetation so the land absorbs more rainfall. Recharge Basins – Engineer shallow basins that temporarily hold stormwater, letting it soak in instead of running off. Brush Control - removal of invasive brush species such as juniper, mesquite, and salt cedar is used to increase water yield and aquifer recharge. (See more near the bottom of this page) The video below is a segment from a Trinity Glen Rose District sponsored Go Gardening Show. The video was shot at the Edwards Aquifer Field Research Park in Northern Bexar County along the Cibolo Creek. You'll get a great look at how berms, swales, small rock dams, enhanced vegetation and shallow recharge basin s help move water from rain to recharge. Cibolo Creek in Northern Bexar County Cibolo Creek in Northern Bexar County Cibolo Creek is a major Recharge feature to the Trinity Aquifer Recharge for the Trinity Group of Aquifers occurs via local precipitation on its outcrop. The outcrop area takes in recharge flow from the Cibolo Creek and other overlying units where it is in the subsurface. When Cibolo Creek has water in the stretches along northern Bexar County, the movement of water from the creek into the groundwater 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. Helpful Resources - From Rain to Recharge Soil Erosion is a form of soil degradation in which the top layer of soil is carried away by wind and water. Rain and channelized water flow dislodge and wash exposed soil downhill. This cumulative loss of soil poses a major challenge to landowners and managers. The Hillside Stewardship guide highlights a series of erosion-control structures that Hill Country landowners and managers are using to slow and sink water into the land. Just click on the cover photo of the guide to the left to download it. If you'd prefer a video on the topic, you can watch the "Hill Country Groundwater Recharge With Bryan Hummel " by clicking the video link. Brush Control Texas brush control, specifically targeting species like juniper, mesquite, and saltcedar, is used to increase water yield and aquifer recharge by reducing excessive transpiration. The Water Supply Enhancement Program (WSEP) by the TSSWCB incentivizes managing these deep-rooted plants in priority areas to conserve water, improve spring flows, and reduce erosion. Brush Busters is a cooperative program of the Texas AgriLife Research and Extension Service to expedite the adoption of Tactical Brush Management Systems (TBMS) technology. Brush Busters methods are easily understood, even by those with little or no previous experience in brush control. We recommend only “select” treatments capable of killing at least 7 out of 10 of the plants treated. Brush Busters methods make every attempt to keep equipment costs and complexity to a minimum, and whenever possible, to use non-restricted herbicides. One-page pamphlets are available from most County Extension offices that describe, in a simple 3-step process, the Brush Busters control methods for mesquite, prickly pear and cedar. Videos are available that demonstrate the Brush Busters control methods available at this link, https://texnat.tamu.edu/about/brush-busters/.

Here you will find the latest research by the Trinity Glen Rose District in our effort to learn about the Trinity Aquifer. TGR Board Adopts Changes to Precinct Boundaries Redistricting is part of the election process in the United States. And because the Trinity Glen Rose Groundwater Conservation District’s (TGR) board members are elected, the district recently reviewed its population changes over the past 10-year period and found it needed to adjust its boundaries due to population shifts in the precincts. The objective is to balance the per capita representation for each precinct in order to give all district constituents an equal say via their elected representatives regarding district policies and future directions. The TGR Board used the following criteria to make its final boundary adjustments: begin and end with identifiable boundaries maintain communities of interest & neighborhoods use whole voting precincts if possible base plan on existing districts adopt districts of relatively equal size draw districts that are compact and contiguous keep existing incumbents in their districts to preserve previous voter wishes tailor plan to comply with the Voting Rights Act The Board opened its planning documents up for public review and comment. At the Dec. 4 board meeting, the Board held a public hearing to receive any final comments before taking official actions to change the TGR precinct boundaries. After a thorough planning process and public comment period, the TGR Board officially changed its boundaries to reflect a more consistent population base in each precinct. Due to the change in boundaries, the district will be holding an election to fill all precinct seats in May, 2022. Click here for more information. Please see the charts below which show the population unbalance before the boundaries were changed and then the chart with showed precinct populations in balance after the official changes were made to the precinct boundaries. These new boundaries will remain in place until the next U.S. census reports are received. Resolution Approving the Redistricting of Director Precincts Effective December 9, 2021 Newly Adopted Precinct Boundaries The map above shows the current boundaries designated by the red lines. The colored areas which extend outside of the red lines demonstrate how the precinct boundaries were redrawn to bring the district into compliance with equal population representation guidelines. Click on this link to download a PDF of this map to review it in more detail. Click on this link to see the current TGR District Precinct map. See District Precincts Map Population and Demographic Adjustments The two charts below show where the population and demographics for each TGR precinct before the board changed the precinct boundaries and how they changed after redrawing boundaries occurred. The first chart shows the existing population. The second chart shows the population representation numbers with new boundaries.

Here you will find the latest research by the Trinity Glen Rose District in our effort to learn about the Trinity Aquifer. Regional Water Planning Group L Region L Texas | South Central Texas Regional Water Planning Group Texas Water Development Board link for RWPG L - Region L Planning Group

Need help with a past TGR agenda, meeting minutes, or newsletter? We keep our documents archived here. TGR ARCHIVES

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

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, April 16, 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.