Colorado

The Colorado StreamStats page currently implements for the Mountain Region of Colorado selected high flow and low flow statistics, namely: annual mean flow, mean flows for each month, 2-year through 500 year peak flows, 2-year-7-day low flow, 10-year-7-day low flow, and 50-year-7-day low flow. The extent of the Mountain Region is displayed as a blue boundary on the Colorado StreamStats web page.

Two reports document the regression equations available in StreamStats for Colorado, the errors associated with the estimates, and the methods used to develop the equations and to measure the basin characteristics used in the equations. Users should familiarize themselves with these reports before using StreamStats to obtain estimates of streamflow statistics for ungaged sites.

Kircher, J.E., Choquette, A.F. and Richter, B.D., 1985, Estimation of natural streamflow characteristics in western Colorado: U.S. Geological Survey Water-Resources Investigations Report 85-4086, 28 p.
Vaill, J.E., 2000, Analysis of the magnitude and frequency of floods in Colorado: U.S. Geological Survey Water-Resources Investigations Report 99-4190, 35 p.

Interactive Map

StreamStats for Colorado was developed in cooperation with the Colorado Department of Transportation and the Colorado Water Conservation Board.