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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
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USGS Water-Year Summary 2025
440544103180002 City Quarry-East 2N 7E32ABBC2
Paleozoic aquifers
Madison Group (Upper and Lower Mississippian)
Madison Group (Upper and Lower Mississippian)
LOCATION - Lat 44°05'43.6", long 103°18'05.2" referenced to North American Datum of 1983, in NW 1/4 NW 1/4 NE 1/4 sec.32, T.2 N., R.7 E., Pennington County, SD, Hydrologic Unit 10120110, Lat. 44005'43.6", Long. 103018'05.2", in SW1/4 NW1/4 NW1/4 NE1/4, Section 32, T2N, R7E, Hydrologic Unit 10120110, at Rapid City, Pennington County, SD. Wells are located aproximately 300 feet west of City Springs Road in Rapid City.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 826 ft. Upper casing diameter 6.3 in; top of first opening undefined, bottom of last opening undefined.
DATUM - Land-surface datum is 3,493.78 ft above North American Vertical Datum of 1988. Measuring point: Top of steel casing, 1.8 ft above land-surface datum, Oct. 1, 1989 to present.
PERIOD OF RECORD - Feb. 1990 to Sept. 1998 published in Black Hills Hydrology Reports. Oct. 1998 to current available in files of USGS Rapid City District Office.
GAGE - Satellite data collection platform, 60 minute recording interval.
REMARKS - For October 1, 2013 to Sept. 30, 2018, records good. Record quality ratings may not be included in the water-year summary for approved records newer than 09/30/2018. Record quality is still being rated internally. For questions about record quality ratings, please send email to gs-w-sd_NWISWeb_Data_Inquiries@usgs.gov.
EXTREMES FOR PERIOD OF RECORD - Highest water level -1.82 ft below land surface datum, May 25, 2020; Lowest water level 73.18 ft below land surface datum, Feb. 1, 2007.
