WELL DESCRIPTIONS AND WATER LEVEL MEASUREMENTS

GROUND-WATER LEVELS

McHENRY COUNTY


List of Aquifers

Fox Hills
Hell Creek
New Rockford
Denbigh 481948100305901
Denbigh 481948100305902

480302100515201. Local number, 153-079-30AAA1.

LOCATION.--Lat 48�'02", long 100�'52", Hydrologic Unit 09010003. Owner: North Dakota State Water Commission.

AQUIFER.--Fox Hills.

WELL CHARACTERISTICS.--Drilled observation well, depth 720 ft, cased with 456 ft of 2-in diameter steel pipe, No. 12 slot screen set 456 to 467 ft below land-surface datum.

INSTRUMENTATION.--Measured using a steel tape.

DATUM.--Altitude of land-surface datum is 1,595 ft. Measuring point: Top of casing 3.40 ft above land-surface datum.

PERIOD OF RECORD.--March 1977 to October 1978 and September 1997 to current year.

EXTREMES FOR PERIOD OF RECORD.--Highest water level measured, 30.45 ft below land-surface datum, June 3, 1999; lowest water level measured, 34.57 ft below land-surface datum, July 11, 1977.

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
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  Oct. 5    31.00    June 3    30.45    Aug. 23    30.62    Sept. 21    30.68
  Nov. 2    31.10
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McHenry County Ground-Water Levels

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480302100515202. Local number, 153-079-30AAA2.

LOCATION.--Lat 48�'02", long 100�'52", Hydrologic Unit 09010003. Owner: North Dakota State Water Commission.

AQUIFER.--Hell Creek.

WELL CHARACTERISTICS.--Drilled observation well, depth 410 ft, cased with 404 ft of 2-in diameter steel pipe, No. 12 slot screen set 404 to 410 ft below land-surface datum.

INSTRUMENTATION.--Measured using a steel tape.

DATUM.--Altitude of land-surface datum is 1,595 ft. Measuring point: Top of casing 2.75 ft above land-surface datum.

PERIOD OF RECORD.--April 1977 to October 1978 and September 1997 to current year.

EXTREMES FOR PERIOD OF RECORD.--Highest water level measured, 15.78 ft below land-surface datum, June 3, 1999; lowest water level measured, 17.97 ft below land-surface datum, October 5, 1977.

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. 5    16.45    June 3    15.78    Aug. 23    16.97    Sept. 21    16.10
  Nov. 2    16.59
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McHenry County Ground-Water Levels

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480913100372501. Local number, 154-077-18CCC.

LOCATION.--Lat 48�'13", long 100�'25", Hydrologic Unit 09010003. Owner: North Dakota State Water Commission.

AQUIFER.--New Rockford.

WELL CHARACTERISTICS.--Drilled observation well, depth 260 ft, cased with 173 ft of 4-in diameter plastic pipe, No. 18 slot screen set 173 to 178 ft below land-surface datum.

INSTRUMENTATION.--Water-level recorder. From May 1976 to current year, daily minimum recorded water levels also are available.

DATUM.--Altitude of land-surface datum is 1,577.49 ft. Measuring point: Top of casing 2.00 ft above land-surface datum.

PERIOD OF RECORD.--May 1976 to current year.

EXTREMES FOR PERIOD OF RECORD.--Highest water level measured, 52.96 ft below land-surface datum, May 25, 1976; lowest daily water level, 75.43 ft below land-surface datum, August 1, 1994.

WATER LEVEL, IN FEET BELOW LAND SURFACE DATUM, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999
MAXIMUM VALUES (DAILY LOW WATER LEVEL)

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 DAY  OCT  NOV    DEC    JAN    FEB    MAR    APR    MAY    JUN    JUL  AUG    SEP
------------------------------------------------------------------------------------

5     ---  58.22  57.73  57.24  ---    56.97  56.53  55.90  ---    ---  ---    59.90
10    ---  57.90  57.72  57.28  ---    56.94  56.49  55.88  ---    ---  74.83  58.17
15    ---  57.97  57.61  57.14  ---    56.79  56.38  55.71  ---    ---  60.49  57.47
20    ---  57.89  57.67  57.23  57.08  56.96  56.29  55.71  ---    ---  61.23  57.03
25    ---  57.77  57.40  57.24  56.95  56.81  56.20  55.76  ---    ---  61.48  56.74
 EOM  ---  57.76  57.41  ---    56.99  56.69  56.23  55.72  ---    ---  61.64  56.52

 MAX  ---  58.27  57.76  57.43  57.09  57.08  56.68  56.13  55.61  ---  74.83  63.74
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WATER YEAR 1999 HIGHEST WATER LEVEL 55.55 JUNE 3 LOWEST WATER LEVEL 74.83 AUGUST 9

McHenry County Ground-Water Levels

McHenry County Ground-Water Levels

_____________________________________________________________________________________________________________

481948100305901. Local number, 156-077-13CCB1.

LOCATION.--Lat 48�'48", long 100�'59", Hydrologic Unit 09010003. Owner: North Dakota State Water Commission.

AQUIFER.--Denbigh.

WELL CHARACTERISTICS.--Drilled observation well, depth 160 ft, cased with 123 ft of 1.25-in diameter plastic pipe, No. 18 slot screen set 123 to 126 ft below land-surface datum.

INSTRUMENTATION.--Measured using a steel tape.

DATUM.--Altitude of land-surface datum is 1,475 ft. Measuring point: Top of casing 1.70 ft above land-surface datum.

PERIOD OF RECORD.--July 1975 to current year.

EXTREMES FOR PERIOD OF RECORD.--Highest water level measured, 1.65 ft below land-surface datum, September 29, 1997; lowest water level measured, 4.68 ft below land-surface datum, November 4, 1975.

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. 5    1.70    Nov. 2    2.36    June 1    1.72    July 19    1.91
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McHenry County Ground-Water Levels

McHenry County Ground-Water Levels

____________________________________________________________________________________________________________

481948100305902. Local number, 156-077-13CCB2.

LOCATION.--Lat 48�'48", long 100�'59", Hydrologic Unit 09010003. Owner: North Dakota State Water Commission.

AQUIFER.--Denbigh.

WELL CHARACTERISTICS.--Drilled observation well, depth 60 ft, cased with 53 ft of 1.25-in diameter plastic pipe, No. 18 slot screen set 53 to 56 ft below land-surface datum.

INSTRUMENTATION.--Measured using a steel tape.

DATUM.--Altitude of land-surface datum is 1,475 ft. Measuring point: Top of casing 1.80 ft above land-surface datum.

PERIOD OF RECORD.--July 1975 to current year.

EXTREMES FOR PERIOD OF RECORD.--Highest water level measured, 0.05 ft below land-surface datum, June 1, 1999; lowest water level measured, 7.16 ft below land-surface datum, November 10, 1991.

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. 5    4.25    Nov. 2    3.68    June 1    0.05    July 19    0.69
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McHenry County Ground-Water Levels

McHenry County Ground-Water Levels

Return to 1999 Data Report

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