This USGS data release consists of polygons representing Gumboot Lake extents from the report Effects of ground-water development on the water regimen of Paradise Valley, Humboldt County, Nevada, 1949-1968 and Hydrologic Reconnaissance of the Tributary Areas (Nevada Department of Conservation and Natural Resources Water Resources Bulletin 39). There are two datasets containing four different extents. The first dataset contains the approximate maximum extent Gumboot Lake extent as published on plate 1 of Bulletin 39. The second data set contains three approximate elevation-derived extents based on observations published in Bulletin 39: 1) based on 1952-1953 estimated lake elevation of 4,320 feet, 2) based on the estimated average lake area of 2,000 acres, and 3) based on estimated maximum lake area of 10,000 acres.