USGS Water-Year Summary 2024
351248085131601 Hm:N-057
Valley and Ridge aquifers
Newman Limestone
LOCATION - Lat 35°12'48", long 85°13'16" referenced to North American Datum of 1927, Hamilton County, TN, Hydrologic Unit 06020001, at the electric substation at the end of Holland Johnson Rd., about 0.2 mile west of the Thrasher Pike bridge over U.S. Hwy 27.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 162 ft. Upper casing diameter 6.25 in; top of first opening 125 ft, bottom of last opening 162 ft. Drilled observation well, 6-in. diameter.
DATUM - Land-surface datum is 680.92 ft above National Geodetic Vertical Datum of 1929. Measuring point: TOP OF NEW INSTRUMENT SHELF, 2.35 ft above land-surface datum, Mar. 6, 2013 to present.
PERIOD OF RECORD - Periodic measurements starting in Nov. 1988. Sporadic record from water-level recorder, Aug. 30, 1990, to Jul. 8, 1992. Water-level record, Mar. 6, 2013, to current year.
GAGE - Data collection platform recording at 30-min. intervals, sporadic record Aug. 30, 1990, to Jul. 8, 1992; continuous-record Mar. 6, 2013, to current year
EXTREMES FOR PERIOD OF RECORD - Highest water level, 5.61 ft. below land-surface datum, Dec. 26, 2015; lowest, 35.49 ft. below land-surface datum, Nov. 12, 2016.