Chalk Mountain Quad
Texas Water Development Board
Located in Erath County, Texas, this groundwater monitoring location is associated with a water well in the Edwards-Trinity aquifer system.
Well Construction
| Depth | Description | |
|---|---|---|
| 0.0-45.0 ft | steel casing | |
| 50.0-304.0 ft | steel casing | |
| 404.0-451.0 ft | steel casing | |
| 45.0-50.0 ft | steel screen | |
| 304.0-404.0 ft | steel screen | |
| 451.0-512.0 ft | steel screen |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-2.0 ft | - | Surf. Sd. |
| 2.0-14.0 ft | - | Yellow Clay |
| 14.0-15.0 ft | - | Sd (H20 Seep) |
| 15.0-60.0 ft | - | Sdy Clay |
| 60.0-264.0 ft | - | Lime and Shell |
| 264.0-364.0 ft | - | H2O Sd w/ Dh. Breaks |
| 364.0-385.0 ft | - | Red Bed |
| 385.0-395.0 ft | - | H2O Sd. |
| 395.0-413.0 ft | - | Red Bed |
| 413.0-492.0 ft | - | H2O Sd. |
-
Agency Texas Water Development Board Site Name Chalk Mountain Quad Site Number 3249501 Site Type WELL Lat/Long (NAD83) 32.2008, -97.9425 Well Depth 512 Feet Elevation (NAVD88) 1075.0 ft Latitude 32.200834 Longitude -97.9425 Local Aquifer Name Trinity (218TWMT) (None) National Aquifer Name Edwards-Trinity aquifer system (S500EDRTRN) Aquifer Type UNCONFINED Water-Level Well Type Surveillance 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 -
-
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 340.00 313.30 45.00 1963-11-15 2024-05-17 82 60.5 319.70 53.333 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 338.40 335.61 330.30 316.95 311.52 296.71 293.24 18 18 Mar 292.28 290.89 286.99 277.75 269.26 261.96 261.70 17 17 May 336.00 335.40 329.75 320.25 314.77 311.85 311.50 14 14 Sep 340.00 339.60 332.15 321.20 316.62 308.55 303.30 14 14 Statistics Calculated 2025-04-21 -
Operated in cooperation with:
