Supplement to Water-Resources Investigations Report 99-4122, lake-level frequency analysis for the Waubay Lakes Chain, northeastern South Dakota

Abstract

In this report, "sea level" refers to the National Geodetic Vertical Datum of 1929 (NGVD 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 Sea Level Datum of 1929.