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Here you will find the latest research by the Trinity Glen Rose District in our effort to learn about the Trinity Aquifer. TGR District General Elections TGR District Officer General Elections will next be held on May 2, 2026 Election of Officer Information ORDER OF ELECTION CANCELLATION (February 19, 2026) The May 2, 2026 director elections has been cancelled. NOTICE OF DEADLINE TO FILE APPLICATIONS FOR PLACE ON THE BALLOT ORDER OF ELECTION (English version ) Called January 15, 2026 ORDER OF ELECTION (Spanish version) Posted Order of Election Bexar County - Elections Office Notice Page Location of Election: BEXAR COUNTY EARLY VOTING LOCATIONS & HOURS (TBD) Bexar County participates in the Countywide Polling Place Program under Section 43.007, as amended, Texas Election Code. Registered voters will be able to cast their Election Day ballots at Vote Center's identified on the County Elections website. Location to File: Location a person may file candidate applications is at 12274 Bandera Rd. #106, Helotes, TX 78023 Candidate Filing Requirements: Fill out all content legibly and completely on the " Application for a Place on the Ballot for a General Election " , click link to document provided. Once complete please file at the Location of Election, there is no filing fee. Filing dates are January 14, 2026 - February 13, 2026. Qualifications for Office: To be qualified to be elected as a director, a person must be a registered voter in the precinct that person represents, be at least 18 years old, a U.S. citizen, a resident of the State of Texas for 12 months, and a resident of the district for 6 months prior to the regular candidate filing deadline (78 days before election day), not totally or partially mentally incapacitated, and not a convicted felon, unless pardoned or otherwise released from the resulting disabilities. Details on Requirements and “Eligibility for Public Office” can be found here in the Election Code, Chapter 141.001 . Current Board of Directors and Terms Important Websites Secretary of State, Elections Division Bexar County Elections Department Comal County Elections Department Kendall County Elections Department 2024 Campaign Finance Reports Precinct Boundaries

The Trinity Glen Rose Groundwater Conservation District conserves and protects the Trinity Aquifer in Northern Bexar County, Texas. If you need to meet with TGR District staff, please call to make an appointment so you can connect with the appropriate staff person. TGR Mission The TGR was created in 2001 to conserve, preserve, and protect the Trinity Aquifer within the District. CONSERVE - PROTECT - PRESERVE South Texas Drought Conditions With the severity of the current drought condition continuing into 2026, the TGR District will be providing up to date information about these conditions are affecting our local aquifers and how you can help. The map to the right is published each week by the U.S. Drought Monitor. As you can see, Bexar County has moved out of the D4 Exceptional Drought category down to the D3 Extreme Drought listing. The rainfall chart from the National Weather Service shows that rainfall for the San Antonio area is running slightly above average for this time of year. While the heavy rainfall amounts over the July 4th weekend have helped the Bexar County area significantly, the Trinity Glen Rose District is still in Stage 3 of its Drought Management Plan. Local Rainfall Amounts - February Bexar County Map Date: Thursday, February 5 , 2026 None D0 (Abnormally Dry) D1 (Moderate Drought) D2 (Severe Drought) D3 (Extreme Drought) D4 (Exceptional Drought) Click the state map to view Texas Drought Monitor page. Click the chart to view the National Weather Service rainfall report. Drought in the News Texas Water Development Board Weather Report Drought.gov - Online info from National Integrated Drought information System Express-News - April-08-25 - Great overview of current drought Texas Water Newsroom - TWDB Texas Tribune on Water Supply How You Can Help - Click Here QUICK LINKS TGR moves to STAGE 3 Watering Restrictions of Drought Plan Board Meeting Info GMA-9 Meeting Information Current Newsletter TGR STATISTICS 302,274 POPULATION 8,950 (Acre Feet) 2024 PRODUCTION 5 DISTRICT PRECINCTS 3 (Drought Stage 3 ) DROUGHT STAGE Conserving Water for Future Generations

Learn about the latest activities of the Trinity Glen Rose District board of directors. TGR UPCOMING MEETINGS TGR Board Meetings Regular Board Meeting Date: February 19 , 2026, 10:00 am Location: District Conference Room, 12274 Bandera Road #106, Helotes, TX 78023 Current Board Meeting Agenda Board Meeting Archives TGR Board Log In Member Resources

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. 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.

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 activities of the Trinity Glen Rose District board of directors. TGR DISTRICT REPORTS AND DOCUMENTS TGR District 2024 Annual Report The TGR District Board of Directors approved publishing the District’s 2024 Annual Report. In the report you’ll find the last calendar year’s financial data, how the District performed against its management plan goals, an update of the growth of District operations, and a rundown on how District staff and board members interacted with the community regarding new policies, water conservation opportunities and programs for protecting the water quality in the Trinity Aquifer. Just click the photo to the right to download. TGR District 2025 Annual Financial Audit TGR District FY 2026 Budget TGR District Management Plan 2025 adopted 11-6-2025 TGR ENABLING LEGISLATION The Trinity Glen Rose Groundwater Conservation District was created by HB 2005 during the 77thTexas Legislature . HB 2005 was authored by State Representatives Frank Corte Jr. and John Shields and sponsored by Senator Jeff Wentworth. The bill was signed into law and took effect on September 1, 2001 and confirmed by voters in 2002. The District was created as a result of the Texas Commission on Environmental Quality (TCEQ) designating the Trinity group of aquifers lying within northern Bexar County as a Priority Groundwater Management Area (PGMA). In 2009, the 81st Texas Legislature passed HB1518 allowing an increase of production fees and allowing municipalities to request inclusion of annexed areas into the District as provided by Chapter 36 Texas Water Code. The mission of the District is to provide rules and regulations to manage, conserve, preserve, protect, maximize recharge and prevent waste of the water resources within the section of the Trinity Aquifer located in northern Bexar County.

This the TGR District Precincts Page with a map of the five precincts where representatives are elected. 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. Click here to see old redistricting plan page.

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

Learn about the latest activities of the Trinity Glen Rose District board of directors. TGR DISTRICT RULES, FORMS, & FEES * Please call the office with any questions on forms and contact us to make an appointment if you need to visit the office for an appropriate staff member to be available to meet with you* District Rules - Current District Rules (adopted October 16, 2025) District Forms Notice of Intent to Drill, Modify, or Plug (also transfer well registration ownership) Existing Well Registration Operating Permit Renewal, Amendment, Or Transfer Affidavit to Produce Groundwater Individual ( non-exempt well owners submit with Notice of Intent for new wells) Affidavit to Produce Groundwater Entity Production Report Form Pump Installation Report Form Meter Registration Form *Note - there is no fee to register an existing well or to t ransfer Ownership . Fees for drilling, plugging, or modifying a well are listed on Notice of Intent Form and the District Fee Schedule. District Fees District Fee Schedule Process and Contact Information The available forms are for well owners or potential well owners and well drillers who need to register an existing well, drill a new well, plug a well, or to make modifications to their existing well or modify a permit, including registering a meter and providing well production. If you have questions, don't hesitate to contact us. Please Note: All Wells issued permits December 1st, 2004 and after MUST have a Geophysical Log run on the well and submitted to the Trinity Glen Rose Groundwater Conservation District along with the State Well Drillers Report and a completed Application to Register a Well. * If you need to visit the office to discuss the rules, forms or fees, please contact the office for an appointment to make sure a staff member will be available to meet with you.* To submit a completed form or materials, please send it to the appropriate address. All applications, forms and payment to Trinity Glen Rose GCD : Trinity Glen Rose GCD c/o Emily Green PO BOX 1589 Helotes, TX 78023 Phone (210) 698-1155 Fax(210)698-1159, or office@tgrgcd.org Need to find out if you need a Well Permit from the San Antonio Water System : San Antonio Water System c/o Elizabeth Gomez, SAWS 2800 US HWY 281 N San Antonio, TX 78212 Phone (210) 233-2349 Need to Find out if you need a Well Permit from the Edwards Aquifer Authority : Edwards Aquifer Authority Well Construction Program 900 E. Quincy San Antonio, TX 78215 Phone (210)222-2204

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

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.

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