thumbnail

Uncertainty in annual streamflow and change in reservoir content data from selected surface-water gaging stations on the lower Colorado River

Fact Sheet 108-01

Prepared in cooperation with the Bureau of Reclamation
By:

Links

Abstract

The lower Colorado River is an important water resource for metropolitan populations, agriculture, and industry in California, Arizona, and Nevada. The Bureau of Reclamation (BOR) manages the river, releasing water stored in Lakes Mead, Mohave, and Havasu, and in other smaller reservoirs as needed so that it can be used by diverters. To help guide river management, streamflow and reservoir content are monitored at strategically located gaging stations along the lower Colorado River, its tributaries, and its diversions. The data obtained from these gaging stations, however, contain uncertainty and are only estimates of the ‘‘true’’ streamflow and reservoir content. As part of a cooperative project with the BOR, the U.S. Geological Survey (USGS) estimated the standard error of the annual discharge for calendar years 1995–99 at 14 streamflow-gaging stations and the standard error of the change in reservoir content at 2 reservoir-content gaging stations (table 1 and fig.1; Anning, 2002). These standard error estimates provide a measure of the random uncertainty for the annual data.

Study Area

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Uncertainty in annual streamflow and change in reservoir content data from selected surface-water gaging stations on the lower Colorado River
Series title:
Fact Sheet
Series number:
108-01
Year Published:
2002
Language:
English
Publisher:
U.S. Geological Survey
Contributing office(s):
Arizona Water Science Center
Description:
4 p.
Country:
United States
State:
Arizona
Other Geospatial:
Colorado River