- 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.
Sheyenne Delta Aquifer
October 1963 to current year.
WELL CHARACTERISTICS.--Drilled observation well, depth 42 ft, cased with 33 ft of 4-in diameter plastic pipe, slotted 33 to 38 ft below land-surface datum.
INSTRUMENTATION.--Measured using a chalked steel tape or a graduated electric tape.
DATUM.--Altitude of land-surface datum is 1,051.20 ft above North American Vertical Datum of 1988 (surveyed by ND State Water Commission, accuracy 0.01 feet). Prior to October 1, 2017 land-surface datum was published as 1,050.2 ft above the National Geodetic Vertical Datum of 1929.
MEASURING POINT.--Top of casing 0.50 ft above land-surface datum.
EXTREMES FOR WATER YEAR 2014.--Highest water level, 2.70 ft below land-surface datum, April 29; lowest water level, 6.79 ft below land-surface datum, March 7, 8.
EXTREMES FOR WATER YEAR 2015.--Highest water level, 2.89 ft below land-surface datum, May 29; lowest water level, 7.13 ft below land-surface datum, March 11.
EXTREMES FOR WATER YEAR 2016.--Highest water level, 4.43 ft below land-surface datum, July 12; lowest water level, 7.11 ft below land-surface datum, February 16, 17, and 18.
EXTREMES FOR WATER YEAR 2017.--Highest water level, 4.30 ft below land-surface datum, April 20; lowest water level, 7.15 ft below land-surface datum, September 22.
