Streamflow and Water-Quality Characteristics in the Upper Tenmile Creek Watershed, Lewis and Clark County, West-Cenral Montana.

摘要

A cooperative hydrologic investigation of the Upper Tenmile Creek watershed was initiated in May 1997 to obtain information for long-range watershed planning. Thirty-two stream-stage gages were established throughout the upper Tenmile Creek watershed. One new continuous-record streamflow-gaging station was established, and one disconnected continuous-record streamflow-gaging station (Tenmile Creek near Rimini) was re-established. Long-term monthly discharge for the 1961-90 base period was estimated at 19 of the stream-stage gages by regressing measured and observed discharge at each site in 1997 with concurrent, daily natural discharge at Tenmile Creek near Rimini. The regression relationship at each site then was used to estimate long-term monthly discharge from long-term monthly natural discharge at Tenmile Creek near Rimini.