USGS Water-Year Summary 2023
433249092260501 SPR-4 South Drained Site Perimeter
Sand and gravel aquifers (glaciated regions)
Pleistocene Series
LOCATION - Lat 43°32'49.45", long 92°26'05.55" referenced to North American Datum of 1983, in SW 1/4 SE 1/4 sec.18, T.101 N., R.13 W., Fillmore County, MN, Hydrologic Unit 07060002, The piezometer is located approximately 4.25 miles NE of LeRoy, MN. The piezometer is located approximately 0.4 miles northwest of the intersection of 130th street and County Rd. 109 (111th Ave).
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 14.89 ft. Upper casing diameter 1.59 in; top of first opening 9.84 ft, bottom of last opening 14.32 ft. Piezometer SPR-4 was installed using several sections of 3.25-inch-diameter Geoprobe rods to a depth of 15.0 feet. The piezometer is constructed of a 4.48-feet-long, 1.5-inch-diameter, schedule-40 PVC, 0.010-inch slotted Hole Products Inc. well screen, flush threaded to length/s of 5.00 feet of 1.5-inch-diameter, schedule-40 PVC well casing. The piezometer casing measuring point (stickup) was 2.34 feet (1303.70 ft. NAVD88, +/- 0.02 ft.) above land surface when measured on 18 November 2016. The open interval of the piezometer is between 9.84 and 14.32 feet below land surface and the total well depth is 14.89 feet below land surface.
This piezometer is screened in glacial till/clay sediment, which is overlies bedrock.
DATUM - Land-surface datum is 1,301.36 ft above North American Vertical Datum of 1988. Measuring point: Black mark on top of 1.59-inch diameter PVC well casing, 2.34 ft above land-surface datum, Nov. 18, 2016 to present. The measuring point is a black mark on the top of the white PVC 1.59-inch diameter well casing, which was 2.34 feet above land surface on 18 November 2016. Elevation of the measuring point is 1303.70 plus-or-minus 0.02 feet above sea level, North American Vertical Datum of 1988, based on differential GPS survey on 27 March 2017.
PERIOD OF RECORD -
Water levels were recorded periodically from 27 February 2017 to 31 October 2018. Water levels were recorded quarter-hourly from 16 March 2017 at 10:30 CDT to 31 October 2018 at 10:30 CDT, except during the following periods:
20 Feb. 2018 at 02:30 CST to 24 Feb. 2018 at 18:45 CST: due to transducer recording inaccurate data, which was deleted from record.
14 Oct. 2018 at 16:00 CDT to 15 Oct. 2018 at 10:00 CDT: due to transducer recording inaccurate data, which was deleted from record.
GAGE - Continuous water level and water temperature were measured with a new Solinst Model 3001 Levelogger non-vented pressure transducer from 16 March 2017 at 08:30 CDT to 31 October 2018 at 10:30. These data are recorded quarter-hourly by the Solinst Model 3001 Levelogger pressure transducer, which had an internal data logger built into it. The data logger was housed inside the 1.5-inch PVC well casing. The piezometer has a slip-on PVC cap and no pad lock. The gage was powered by an internal pressure transducer battery. A Solinst Model 3001 Barologger Edge atmospheric barometer was also installed (hanging) in nearby piezometer STR2-3A. These barometric pressure data were used to post-process/correct the non-vented pressure transducer data. Data were downloaded manually and no telemetry or phone line was wired into the gage.
The pressure transducer and data logger were removed from the well on 31 Oct. 2018 at 10:30 CDT. Data collection for the Impacts on Drainage Recharge study have concluded and all data logging equipment have been removed from the site.
COOPERATION - This site was operated (2016-2018) by the U.S. Geological Survey as a monitoring piezometer for the Southeast Minnesota Subsurface Drainage Impacts on Groundwater Recharge study. The piezometer began to be used as part of the Southeast Minnesota Subsurface Drainage Impacts on Groundwater Recharge study during 18 Nov. 2016 to 31 Oct. 2018. The GW Drainage Recharge study is a collaborative effort between the Environment and Natural Resources Trust Fund (via Legislative-Citizen Commission on Minnesota Resources (LCCMR)) and the U.S. Geological Survey.
WATER-QUALITY RECORDS
WELL CHARACTERISTICS - Depth 14.89 ft. Upper casing diameter 1.59 in; top of first opening 9.84 ft, bottom of last opening 14.32 ft. Piezometer SPR-4 was installed using several sections of 3.25-inch-diameter Geoprobe rods to a depth of 15.0 feet. The piezometer is constructed of a 4.48-feet-long, 1.5-inch-diameter, schedule-40 PVC, 0.010-inch slotted Hole Products Inc. well screen, flush threaded to length/s of 5.00 feet of 1.5-inch-diameter, schedule-40 PVC well casing. The piezometer casing measuring point (stickup) was 2.34 feet (1303.70 ft. NAVD88, +/- 0.02 ft.) above land surface when measured on 18 November 2016. The open interval of the piezometer is between 9.84 and 14.32 feet below land surface and the total well depth is 14.89 feet below land surface.
This piezometer is screened in glacial till/clay sediment, which is overlies bedrock.
DATUM - Land-surface datum is 1,301.36 ft above North American Vertical Datum of 1988. Measuring point: Black mark on top of 1.59-inch diameter PVC well casing, 2.34 ft above land-surface datum, Nov. 18, 2016 to present. The measuring point is a black mark on the top of the white PVC 1.59-inch diameter well casing, which was 2.34 feet above land surface on 18 November 2016. Elevation of the measuring point is 1303.70 plus-or-minus 0.02 feet above sea level, North American Vertical Datum of 1988, based on differential GPS survey on 27 March 2017.
PERIOD OF RECORD - Water temperatures were recorded quarter-hourly from 16 March 2017 at 09:30 CDT to 31 October 2018 at 10:30 CDT.
COOPERATION - This site was operated (2016-2018) by the U.S. Geological Survey as a monitoring piezometer for the Southeast Minnesota Subsurface Drainage Impacts on Groundwater Recharge study. The piezometer began to be used as part of the Southeast Minnesota Subsurface Drainage Impacts on Groundwater Recharge study during 18 Nov. 2016 to 31 Oct. 2018. The GW Drainage Recharge study is a collaborative effort between the Environment and Natural Resources Trust Fund (via Legislative-Citizen Commission on Minnesota Resources (LCCMR)) and the U.S. Geological Survey.
INSTRUMENTATION - Water temperature are measured with an Solinst Levelogger 3001 submersible pressure transducer accurate to +/- 0.1°C. Temperature differences are accurate to 0.1°C.