Ater Quad
Texas Water Development Board
Located in Coryell County, Texas, this groundwater monitoring location is associated with a water well in the Edwards-Trinity aquifer system.
Well Construction
| Depth | Description | |
|---|---|---|
| 0.0-738.0 ft | steel casing | |
| 792.0-820.0 ft | steel casing | |
| 836.0-858.0 ft | steel casing | |
| 894.0-908.0 ft | steel casing | |
| 738.0-792.0 ft | steel screen | |
| 820.0-836.0 ft | steel screen | |
| 858.0-894.0 ft | steel screen |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-4.0 ft | - | Clay and Rocks |
| 4.0-80.0 ft | - | Clay and Lime |
| 80.0-110.0 ft | - | Shale |
| 110.0-160.0 ft | - | Lime |
| 160.0-300.0 ft | - | Lime and Shale Streaks |
| 300.0-550.0 ft | - | Lime |
| 550.0-730.0 ft | - | Lime Streaks |
| 730.0-810.0 ft | - | Sand |
| 810.0-820.0 ft | - | Lime |
| 820.0-840.0 ft | - | Sand |
| 840.0-842.0 ft | - | Lime |
| 842.0-908.0 ft | - | Sand |
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Agency Texas Water Development Board Site Name Ater Quad Site Number 4026201 Site Type WELL Lat/Long (NAD83) 31.6189, -97.7992 Well Depth 908 Feet Elevation (NAVD88) 1157.0 ft Latitude 31.6188889 Longitude -97.7991667 Local Aquifer Name Trinity (218TVPK) (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 741.21 707.36 657.99 1990-09-15 2025-12-31 3534 35.2 740.69 0.0 Statistics Calculated 2026-01-14 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 738.84 735.72 727.51 709.70 687.61 661.94 659.49 30 30 Feb 738.77 735.22 725.20 704.48 674.27 661.39 659.30 32 32 Mar 738.74 735.19 725.03 704.42 674.58 661.41 659.22 32 32 Apr 738.91 734.99 724.57 702.75 671.05 660.52 658.27 33 33 May 739.03 734.50 724.95 702.73 673.66 660.55 658.23 35 35 Jun 738.99 734.47 725.10 702.98 674.06 660.36 658.13 35 35 Jul 738.99 735.86 725.40 703.34 674.45 660.46 658.20 35 35 Aug 739.12 736.69 727.09 707.91 682.54 660.76 658.40 33 33 Sep 739.64 736.90 727.39 708.37 683.04 661.51 659.66 33 33 Oct 740.01 737.51 728.56 712.73 689.49 667.73 659.72 30 30 Nov 740.54 737.72 728.60 713.10 689.82 667.77 659.69 30 30 Dec 740.40 737.68 728.50 710.71 688.21 665.46 659.54 31 31 Statistics Calculated 2026-01-14 -
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