WELL DESCRIPTIONS AND WATER LEVEL MEASUREMENTS

GROUND-WATER LEVELS

SIOUX COUNTY


List of Aquifers

Fox Hills
Hell Creek
Strasburg

460244101272701. Local number, 130-086-28CCC1.

LOCATION.--Lat 46�'44", long 101�'27", Hydrologic Unit 10130205. Owner: North Dakota State Water Commission.

AQUIFER.--Fox Hills.

WELL CHARACTERISTICS.--Drilled observation well, depth 580 ft, cased with 406 ft of 2-in diameter steel pipe, No. 12 slot screen set 406 to 424 ft below land-surface datum.

INSTRUMENTATION.--Measured using a steel tape.

DATUM.--Altitude of land-surface datum is 2,062 ft. Measuring point: Top of casing 3.00 ft above land-surface datum.

PERIOD OF RECORD.--July 1973 to current year.

EXTREMES FOR PERIOD OF RECORD.--Highest water level measured, 138.32 ft below land-surface datum, May 17, 1999; lowest water level measured, 140.13 ft below land-surface datum, August 27, 1974.

WATER LEVEL, IN FEET BELOW LAND SURFACE DATUM, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999

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             WATER                WATER                WATER                WATER
   DATE      LEVEL     DATE       LEVEL     DATE       LEVEL     DATE       LEVEL
----------------------------------------------------------------------------------

  Oct. 22    138.74    Mar. 22    138.47    July 27    138.52    Sept. 1    138.60
  Dec. 14    138.56    May 17     138.32
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Sioux County Ground-Water Levels

______________________________________________________________________________________________________________

460244101272702. Local number, 130-086-28CCC2.

LOCATION.--Lat 46�'44", long 101�'27", Hydrologic Unit 10130205. Owner: North Dakota State Water Commission.

AQUIFER.--Hell Creek.

WELL CHARACTERISTICS.--Drilled observation well, depth 210 ft, cased with 204 ft of 1.25-in diameter plastic pipe, No. 12 slot screen set 204 to 210 ft below land-surface datum.

INSTRUMENTATION.--Measured using a steel tape.

DATUM.--Altitude of land-surface datum is 2,062 ft. Measuring point: Top of casing 2.00 ft above land-surface datum.

PERIOD OF RECORD.--July 1973 to current year.

EXTREMES FOR PERIOD OF RECORD.--Highest water level measured, 134.73 ft below land-surface datum, May 17, 1999; lowest water level measured, 136.70 ft below land-surface datum, November 29, 1989.

WATER LEVEL, IN FEET BELOW LAND SURFACE DATUM, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999

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             WATER                WATER                WATER                WATER
   DATE      LEVEL     DATE       LEVEL     DATE       LEVEL     DATE       LEVEL
---------------------------------------------------------------------------------

  Oct. 22    135.13    Mar. 22    134.89    July 27    134.94    Sept. 1    135.01
  Dec. 14    135.08    May 17     134.73
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Sioux County Ground-Water Levels

_____________________________________________________________________________________________________

462239100375601. Local number, 134-079-32ADD.

LOCATION.--Lat 46�'39", long 100�'56", Hydrologic Unit 10130102. Owner: North Dakota State Water Commission.

AQUIFER.--Strasburg.

WELL CHARACTERISTICS.--Drilled observation well, depth 340 ft, cased with 282 ft of 1.25-in diameter plastic pipe, No. 12 slot screen set 282 to 288 ft below land-surface datum.

INSTRUMENTATION.--Measured using a steel tape.

DATUM.--Altitude of land-surface datum is 1,690 ft. Measuring point: Top of casing 1.50 ft above land-surface datum.

PERIOD OF RECORD.--October 1973 to current year.

EXTREMES FOR PERIOD OF RECORD.--Highest water level measured, 72.24 ft below land-surface datum, September 1, 1999; lowest water level measured, 78.60 ft below land-surface datum, November 20, 1978.

WATER LEVEL, IN FEET BELOW LAND SURFACE DATUM, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999

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             WATER              WATER              WATER               WATER
   DATE      LEVEL     DATE     LEVEL     DATE     LEVEL     DATE      LEVEL
------------------------------------------------------------------------------

  Oct. 30    72.86    Apr. 5    72.79    July 7    72.56    Sept. 1    72.24
  Dec. 14    72.90    May 11    72.64
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Sioux County Ground-Water Levels

Return to 1999 Data Report

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