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Water-Year Summary for Site 444443095305001

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Available Parameters
00010 Temperature, water(Mean)  
62611 Elevation, GW, NAVD88(Mean)  
72019 Water level, depth LSD(Min.,Med.,Mean,Max.)  

Water year 2025: 2025-10-01 to 2026-09-30
 
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USGS Water-Year Summary 2025
444443095305001 US-O1 115N39W26AAAABD01 0000685810
Sand and gravel aquifers (glaciated regions)
Glacial Buried Sand and/or Gravel
LOCATION - Lat 44°44'43.01", long 95°30'49.28" referenced to North American Datum of 1983, in NE 1/4 NE 1/4 NW 1/4 sec.09, T.115 N., R.39 W., Yellow Medicine County, MN, Hydrologic Unit 07020004, 4.8 miles SE of Granite Falls, Minnesota. The land surface at the site is 1032.08 plus-or-minus 0.05 feet above sea level, North American Vertical Datum of 1988.
REVISIONS HISTORY - All water temperature data during 24 Apr. 2007 at 17:00 CDT to 13 Apr. 2016 at 23:00 CDT were adjusted by -0.1°C. This adjustment was made to correct the previously uncalibrated water temperature data during this period against a newly installed, calibrated transducer thermistor, which was installed on 24 Oct. 2016 at 18:00 CDT.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 95 ft. Upper casing diameter 2 in; top of first opening 85 ft, bottom of last opening 95 ft. The hole for well US-O1 was drilled with a 6.88-inch-diameter hydraulic rotary drill-rig on Oct. 04, 2006 to a depth of 101 feet. The well is constructed of a 10-feet-long, 2.04-inch-diameter, schedule-80 PVC, 0.010-inch slotted, flush-threaded screen, glued to 87 feet of 2.04-inch-diameter, schedule-80 PVC casing. The casing stickup was 2.07 feet above land surface on Apr. 24, 2007. The open interval of the well is 85 - 95 feet below land surface and the total well depth is 95 feet.
DATUM - Land-surface datum is 1,032.08 ft above North American Vertical Datum of 1988. Measuring point: MP is top of casing, not protection post, 2.07 ft above land-surface datum, Oct. 4, 2006 to present. The measuring point is a black mark on the top of the 2-inch diameter PVC well casing, which was 2.07 feet above land surface on 24 April 2007. Elevation of the measuring point is 1034.148 plus-or-minus 0.046 feet above sea level, North American Vertical Datum of 1988, based on differential GPS Survey on Oct. 06, 2010.
PERIOD OF RECORD -

Hourly water levels were recorded from 24 April 2007 at 17:00 CST to 05 Nov. 2019 at 10:00 CST with a pressure transducer and data logger, except during the following periods:

08-14 & 24 Jan. 2016: Intermittent gaps during due to short-term transducer failures.
14 Apr. 2016 at 09:00-17:00 CDT: due to deleted due to an unknown water level spike after site visit.
24 Oct. 2016 at 15:00-19:00 CDT: due to transducer replacement from failed thermistor.
15 May 2019 at 11:00 CDT - 05 Nov. 2019 at 10:00 CST: due to transducer thermistor failure and removal from well.

When possible, the missing daily-average water levels (above) were estimated based on the trend of the hydrograph during these periods until 1 July 2016.

GAGE -

Water level and water temperature were measured with a WaterLOG H-3123, 0-15 psi range, submersible pressure transducer nominally accurate to 0.01 feet and 0.1°C, respectively. Water level, water temperature, shelter temperature, and battery voltage were all recorded by a Campbell Scientific, Inc. CR206 (512K memory) data logger, which records all data hourly. The data logger is housed in a 12-inch X 14-inch grey fiberglass shelter attached an antenna mast. The gage is powered by a 10W solar panel and is telemetered by radio to a cellular modem at the top of the water tower (base station). Cellular telemetry was discontinued at the water tower base station on 12 Nov. 2019.

The failed transducer was removed from the site on 05 Nov. 2019 at 10:00 CST.

The data logger was removed from the site on 03 Nov. 2020 at 09:00 CST. Data collection for the Upper Sioux Community study have concluded and all data logging equipment have been removed from the site.

COOPERATION - Well US-O1 was operated (2007-2020) by the U.S. Geological Survey in cooperation with the Upper Sioux Community.
WATER-QUALITY RECORDS
WELL CHARACTERISTICS - Depth 95 ft. Upper casing diameter 2 in; top of first opening 85 ft, bottom of last opening 95 ft. The hole for well US-O1 was drilled with a 6.88-inch-diameter hydraulic rotary drill-rig on Oct. 04, 2006 to a depth of 101 feet. The well is constructed of a 10-feet-long, 2.04-inch-diameter, schedule-80 PVC, 0.010-inch slotted, flush-threaded screen, glued to 87 feet of 2.04-inch-diameter, schedule-80 PVC casing. The casing stickup was 2.07 feet above land surface on Apr. 24, 2007. The open interval of the well is 85 - 95 feet below land surface and the total well depth is 95 feet.
DATUM - Land-surface datum is 1,032.08 ft above North American Vertical Datum of 1988. Measuring point: MP is top of casing, not protection post, 2.07 ft above land-surface datum, Oct. 4, 2006 to present. The measuring point is a black mark on the top of the 2-inch diameter PVC well casing, which was 2.07 feet above land surface on 24 April 2007. Elevation of the measuring point is 1034.148 plus-or-minus 0.046 feet above sea level, North American Vertical Datum of 1988, based on differential GPS Survey on Oct. 06, 2010.
PERIOD OF RECORD -

Hourly water temperature is recorded from 24 April 2007 at 17:00 CDT to 05 Nov. 2019 at 10:00 CST, except during the following periods:

08-14 & 24 Jan. 2016: Intermittent gaps during due to short-term transducer failures.
14 Apr. 2016 at 09:00-15:00 CDT: due to deleted  an unknown water temp. spike after site visit.
01 Sept. 2016 at 23:00 CDT - 24 Oct. 2016 at 17:00 CDT: due to transducer replacement from failed thermistor.
15 May 2019 at 11:00 CDT - 05 Nov. 2019 at 10:00 CST: due to transducer thermistor failure and removal from well.

When possible, the missing daily-average water temperatures (above) were estimated based on the trend of the thermograph during these periods until 1 July 2016.

COOPERATION - Well US-O1 was operated (2007-2020) by the U.S. Geological Survey in cooperation with the Upper Sioux Community.
INSTRUMENTATION - Water temperatures were measured with a WaterLOG H-3123 submersible pressure transducer during 24 Oct. 2016 at 18:00 CDT to 05 Nov. 2019 at 10:00 CST, which are accurate to plus-or-minus 0.1°C. Differences in temperature are also accurate to 0.1°C.

Water temperature were measured with a Design Analysis H-310 submersible pressure transducer during 24 Apr. 2007 at 17:00 CDT to 24 Oct. 2016 at 17:00 CDT, which were accurate to plus-or-minus 0.1°C. Differences in temperature are accurate to 0.1°C.