Hydrologic Benchmark Network Stations in the Western U.S. 1963-95 (USGS Circular 1173-D)
Synoptic Water-Quality Data
Synoptic samples were not collected in the Crater Lake HBN Basin as part of this study because the lake receives only 15 percent of its annual water input from surface runoff. Several studies, however, have investigated the chemistry of springs and streams emanating from the caldera walls and along the flanks of Mount Mazama (Thompson and others, 1987; Gregory and others, 1990; Nathenson and Thompson, 1990). These studies have used spring chemistry to investigate hydrologic losses from the lake and to evaluate the predominant solute sources to the lake.