San Antonio East Quad
Texas Water Development Board
Located in Bexar County, Texas, this groundwater monitoring location is associated with a water well in the Edwards-Trinity aquifer system.
Well Construction
| Depth | Description | |
|---|---|---|
| 0.0-340.0 ft | steel casing | |
| 340.0-694.0 ft | steel casing |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-2.0 ft | - | Soil |
| 2.0-55.0 ft | - | Clay, yellow |
| 55.0-190.0 ft | - | Clay, blue |
| 190.0-210.0 ft | - | Limestone, magnesium |
| 210.0-220.0 ft | - | Shale, soft |
| 220.0-240.0 ft | - | Limestone, hard, light gray |
| 240.0-260.0 ft | - | Limestone, very hard bluish-gray |
| 260.0-280.0 ft | - | Limestone, hard white |
| 280.0-300.0 ft | - | Limestone, soft white |
| 300.0-320.0 ft | - | Limestone hard blue and white |
| 320.0-330.0 ft | - | No record |
| 330.0-340.0 ft | - | Limestone, hard blue and white |
| 340.0-353.0 ft | - | Limestone, very hard, white |
| 353.0-380.0 ft | - | Lignite, soft, black |
| 380.0-400.0 ft | - | Rock, gray shaley |
| 400.0-418.0 ft | - | Limestone, hard, white |
| 418.0-494.0 ft | - | Grayson shale (Del Rio clay) |
| 494.0-557.0 ft | - | Edwards Limestone: Limestone, hard, slightly yellow |
| 557.0-575.0 ft | - | Limestone, light colored |
| 575.0-580.0 ft | - | Limestone, porous |
| 580.0-590.0 ft | - | Limestone, hard brown |
| 590.0-625.0 ft | - | Limestone, soft |
| 625.0-655.0 ft | - | Limestone, hard brown |
| 655.0-657.0 ft | - | Limestone, flinty |
| 657.0-671.0 ft | - | Limestone soft |
| 671.0-680.0 ft | - | Limestone, hard white |
| 680.0-690.0 ft | - | Limestone, soft brown |
| 690.0-748.0 ft | - | Limestone, hard |
| 748.0-750.0 ft | - | Flint, black |
| 750.0-795.0 ft | - | Limestone, very hard, yellow |
| 795.0-835.0 ft | - | Limestone, very hard |
| 835.0-855.0 ft | - | Sandstone, soft, light brown |
| 855.0-874.0 ft | - | Limestone, light brown |
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Agency Texas Water Development Board Site Name San Antonio East Quad Site Number 6837203 Site Type WELL Lat/Long (NAD83) 29.4791, -98.4326 Well Depth 874 Feet Elevation (NAVD88) 731.0 ft Latitude 29.4791389 Longitude -98.4326111 Local Aquifer Name Edwards (Balcones Fault Zone) (218EBFZA) (None) National Aquifer Name Edwards-Trinity aquifer system (S500EDRTRN) Aquifer Type UNCONFINED Water-Level Well Type Trend Water-Level Well Characteristics Known Changes Water Quality Network Additional info Link 1 -
Activity Start Date Activity Start Time Characteristic Name Measure Value Units Detection Limit Value Type Sample Fraction Method Name Analytical Method System Sample Method ID Sample Method ID Context Sample Method Name Activity Type Code Data Provided By -
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How do we calculate statistics?
Overall Water Level Statistics (Depth to water, feet below land surface) Lowest Water Level Median Water Level Highest Water Level First Measurement Date Last Measurement Date Number of Measurements Years of Record Latest Value Latest Percentile 109.56 61.24 27.21 1932-11-15 2025-03-31 6316 92.3 101.20 0.0 Statistics Calculated 2025-04-21 Monthly Water Level Statistics (Depth to water, feet below land surface) Month Lowest Median 10th Percentile 25th Percentile 50th Percentile 75th Percentile 90th Percentile Highest Median Number of Measurements Years of Record Jan 101.30 83.11 69.41 57.72 47.68 42.98 34.34 93 93 Feb 100.20 82.27 69.59 57.44 47.52 43.06 33.92 93 93 Mar 102.40 83.09 70.82 59.02 47.79 44.02 31.92 92 92 Apr 97.88 84.35 73.18 58.75 49.94 43.63 35.02 92 92 May 99.62 89.83 76.28 59.16 50.74 44.50 36.25 89 89 Jun 104.15 94.58 79.80 64.58 52.45 45.26 29.59 90 90 Jul 106.54 97.00 85.32 65.85 52.16 46.90 38.95 89 89 Aug 106.89 97.14 87.33 70.76 54.10 47.92 31.74 91 91 Sep 104.93 95.74 81.75 66.76 52.15 47.06 32.01 88 88 Oct 104.00 91.27 77.47 64.55 52.37 46.70 36.13 89 89 Nov 102.40 87.56 73.36 61.67 49.34 42.55 35.40 90 90 Dec 103.80 85.96 70.39 58.82 47.87 42.65 30.06 91 91 Statistics Calculated 2025-04-21 -
Operated in cooperation with:
