CT-SB 30
U.S. Geological Survey
Located in New Haven County, Connecticut, this groundwater monitoring location is associated with a water well in the Sand and gravel aquifers (glaciated regions).
Well Construction
No well construction data is available
No lithology data is available
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Agency U.S. Geological Survey Site Name CT-SB 30 Site Number 412954073125201 Site Type WELL Lat/Long (NAD83) 41.4982, -73.2138 Well Depth 27.5 Feet Elevation (NAVD88) 255.56 ft Latitude 41.4982472222222 Longitude -73.2138361111111 Local Aquifer Name Drift, Stratified (None) National Aquifer Name Sand and gravel aquifers (glaciated regions) (N100GLCIAL) 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 23.10 18.99 15.13 1979-01-02 2026-01-23 616 47.0 20.79 11.11 Statistics Calculated 2026-02-24 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 21.73 20.99 19.66 18.29 17.61 16.65 15.86 34 34 Feb 21.30 20.32 18.97 18.43 17.77 16.93 15.95 30 30 Mar 20.31 19.46 18.77 18.07 16.60 15.97 15.14 32 32 Apr 19.94 18.85 18.18 17.24 16.79 16.35 16.19 34 34 May 19.92 19.16 18.51 18.13 17.29 16.77 16.21 34 34 Jun 20.56 20.09 19.35 18.85 18.31 17.19 16.74 34 34 Jul 21.48 20.96 20.55 19.45 18.98 18.35 18.00 33 33 Aug 22.24 21.81 20.99 20.16 19.17 18.48 16.94 32 32 Sep 22.75 22.00 21.68 21.00 19.51 18.82 16.01 33 33 Oct 22.53 22.39 21.78 20.94 19.91 18.24 16.87 33 33 Nov 23.10 22.30 21.68 20.49 18.88 17.43 16.47 34 34 Dec 23.05 22.05 20.53 19.34 17.92 16.74 15.72 32 32 Statistics Calculated 2026-02-24 -
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