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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.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
420031091441801 083N08W11DDC 1996USGS CRM-15
Sand and gravel aquifers (glaciated regions)
Holocene Alluvium
Holocene Alluvium
LOCATION - Lat 42°00'31", long 91°44'18" referenced to North American Datum of 1983, in SW 1/4 SE 1/4 SE 1/4 sec.11, T.83 N., R.8 W., Linn County, IA, Hydrologic Unit 07080205,
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 18 ft. Upper casing diameter 2 in; top of first opening 15.5 ft, bottom of last opening 18 ft. Drilled observation well, cased to 15.5 ft, screened from 15.5 to 18.0 ft. All depths below land-surface datum.
DATUM - Land-surface datum is 725.08 ft above North American Vertical Datum of 1988. Measuring point: Black marker line on top of inner casing. MP alt. 728.31 NAVD88, 3.23 ft above land-surface datum, Jan. 31, 1997 to present.
PERIOD OF RECORD - Water-level measurements, water years 1997-2001. Continuous water level measurements began again November 7, 2019-present.
GAGE - Intermittent measurements with chalked tape.
WATER-QUALITY RECORDS
WELL CHARACTERISTICS - Depth 18 ft. Upper casing diameter 2 in; top of first opening 15.5 ft, bottom of last opening 18 ft. Drilled observation well, cased to 15.5 ft, screened from 15.5 to 18.0 ft. All depths below land-surface datum.
DATUM - Land-surface datum is 725.08 ft above North American Vertical Datum of 1988. Measuring point: Black marker line on top of inner casing. MP alt. 728.31 NAVD88, 3.23 ft above land-surface datum, Jan. 31, 1997 to present.
PERIOD OF RECORD - Water years 1996-1998.
