JD-485A
U.S. Geological Survey
Located in Jefferson Davis Parish, Louisiana, this groundwater monitoring location is associated with a water well in the Coastal lowlands aquifer system.
Well Construction
| Depth | Description | |
|---|---|---|
| -2.0-200.0 ft | 4.0 in diameter pvc or plastic casing | |
| 200.0-270.0 ft | 2.0 in diameter pvc or plastic casing | |
| 270.0-290.0 ft | 2.0 in diameter pvc, fbrgls/plst screen |
| Depth | Lithology | Description |
|---|---|---|
| 200.0-290.0 ft | Sand & Gravel | Sand & Gravel |
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Agency U.S. Geological Survey Site Name JD-485A Site Number 301300092584503 Site Type WELL Lat/Long (NAD83) 30.2167, -92.98 Well Depth 290 Feet Elevation (NGVD29) 21.0 ft Latitude 30.2166666666667 Longitude -92.98 Local Aquifer Name Chicot Aquifer, Upper (None) National Aquifer Name Coastal lowlands aquifer system (S100CSLLWD) Aquifer Type CONFINED 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 107.41 61.02 46.91 1977-10-07 2025-12-09 7793 48.2 70.37 0.0 Statistics Calculated 2026-01-20 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 62.32 60.69 58.21 56.25 52.54 51.18 48.53 39 39 Feb 65.50 60.43 57.88 56.01 52.51 50.58 47.41 47 47 Mar 70.71 63.95 59.68 57.24 53.75 50.86 48.69 39 39 Apr 78.21 71.30 65.53 60.34 57.72 56.48 52.06 41 41 May 90.77 81.05 75.38 68.76 64.34 61.07 59.76 40 40 Jun 96.40 86.41 76.43 71.46 68.08 62.01 59.61 40 40 Jul 101.13 82.18 74.84 69.58 66.15 62.32 59.63 43 43 Aug 80.71 73.48 68.85 65.11 62.93 61.34 57.29 40 40 Sep 72.77 71.00 66.70 62.12 60.88 58.21 57.24 38 38 Oct 67.92 65.96 63.21 60.50 57.95 56.41 53.53 44 44 Nov 66.44 64.53 61.78 58.93 55.98 54.38 52.03 40 40 Dec 63.21 62.49 59.84 57.64 54.22 52.37 50.12 40 40 Statistics Calculated 2026-01-20 -
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