BA Ea 18
U.S. Geological Survey
Located in Baltimore County, Maryland, this groundwater monitoring location is associated with a water well in the Piedmont and Blue Ridge crystalline-rock aquifers.
Well Construction
| Depth | Description | |
|---|---|---|
| 0.0-50.75 ft | 10.0 in diameter steel casing | |
| 0.0-71.33 ft | 6.0 in diameter steel casing | |
| 71.0-250.0 ft | screen |
| Depth | Lithology | Description |
|---|---|---|
| 71.0-250.0 ft | - | - |
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Agency U.S. Geological Survey Site Name BA Ea 18 Site Number 392045076512501 Site Type WELL Lat/Long (NAD83) 39.3465, -76.8562 Well Depth 250 Feet Elevation (NAVD88) 489.48 ft Latitude 39.346525 Longitude -76.8562055555555 Local Aquifer Name Woodstock Quartz Monzonite (None) National Aquifer Name Piedmont and Blue Ridge crystalline-rock aquifers (N400PDMBRX) Aquifer Type UNCONFINED Water-Level Well Type Trend Water-Level Well Characteristics Background 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 28.21 22.14 10.02 1954-12-20 2025-03-13 5715 70.2 25.05 11.94 Statistics Calculated 2025-04-19 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 27.08 25.63 24.85 23.47 20.94 18.37 13.55 64 64 Feb 27.48 25.87 24.85 23.10 20.33 19.21 13.81 56 56 Mar 26.67 25.18 23.82 22.07 19.62 18.55 10.02 66 66 Apr 26.51 24.77 23.48 20.90 19.11 17.37 14.98 62 62 May 26.59 24.04 22.28 20.19 18.56 16.53 15.55 62 62 Jun 26.68 24.10 22.57 20.73 18.72 17.46 13.94 65 65 Jul 26.97 24.14 22.37 20.93 18.71 17.34 15.11 59 59 Aug 27.37 24.57 23.27 22.01 20.19 18.43 16.08 59 59 Sep 27.73 25.24 23.98 22.61 20.50 19.41 15.12 57 57 Oct 28.06 25.61 24.47 22.99 21.17 19.08 15.94 62 62 Nov 28.00 25.91 24.33 22.98 21.68 19.57 14.41 60 60 Dec 27.48 26.35 24.97 23.63 21.71 20.23 15.64 63 63 Statistics Calculated 2025-04-19 -
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