Water-level measurements were made in 67^ wells in the winter of 1981-82 in the northern High Plains of Colorado.Water-level measurements for the winter of 1981-82 and the four preceding winters are given in a table; this table also lists the location, depth, land-surface elevation, and the aquifer of each well.

To obtain metric unit meter kilometer square kilometer hectometer National Geodetic Vertical Datum of 1929: A geodetic datum derived from a general adjustment of the first-order level nets of both the United States and Canada, formerly called mean sea level.