- 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.
Colfax Aquifer
June 1980 to current year.
WELL CHARACTERISTICS.--Drilled observation well, depth 262 ft, cased with 130 ft of 5-in diameter steel pipe, No. 15 slot screen set 130 to 135 ft below land-surface datum.
DATUM.--Altitude of land-surface datum is 942.63 ft above North American Vertical Datum of 1988 (surveyed by ND State Water Commission, accuracy 0.1 feet). Prior to October 1, 2017, land-surface datum was published as 941.7 ft above the National Geodetic Vertical Datum of 1929.
MEASURING POINT.--Top of casing 2.00 ft above land-surface datum.
EXTREMES FOR WATER YEAR 2014.--Highest water level, 15.70 ft below land-surface datum, June 27; lowest water level, 16.53 ft below land-surface datum, October 3, 4.
EXTREMES FOR WATER YEAR 2015.--Highest water level, 15.89 ft below land-surface datum, May 28, 29; lowest water level, 16.72 ft below land-surface datum, September 30.
EXTREMES FOR WATER YEAR 2016.--Highest water level, 16.12 ft below land-surface datum, April 25; lowest water level, 17.24 ft below land-surface datum, September 1, 2.
EXTREMES FOR WATER YEAR 2017.--Highest water level, 16.42 ft below land-surface datum, April 18; lowest water level, 17.28 ft below land-surface datum, September 8.
