Title: Effects of the Stagecoach Reservoir on the Yampa River’s Physical Characteristics, Species Habitat, and Human Interaction Author:
Scott Steen Abstract:
Abstract: The purpose of this paper is to examine the effects of the Stagecoach Reservoir, situated outside of Steamboat Springs, Colorado, on the Yampa River. More specifically, the paper focuses on physical alterations to the river, quality of species habitat, and changes in human interaction. In terms of physical characteristics, this study uses USGS data to interpret the effects over time that the construction of the reservoir has had on the Yampa’s discharge and suspended sediment load. It was found that reservoir construction resulted in a significant decrease in discharge during filling, as well as a compromise in natural seasonal variation due to spring and summer flooding. Suspended sediment load significantly decreased below the dam after construction. After taking these alterations into account, changes in the habitat of the Colorado Squawfish are discussed. It was found that the specialized habitat needs of the fish are in danger, and can be directly linked to both the building of the dam, and heightened outside pressure on the river. This pressure comes from a growing human population in the area. Recreation represents the fastest growing human use of the Yampa. Key References: Tobin, R.L.1996. Initial Effects of Stagecoach Reservoir on Discharge, Water-Quality Characteristics, and Suspended-Sediment Loads in the Yampa River, Northwest Colorado: USGS Water-Resources Investigations Report 95-4101 Tyrus, H.M. and Karp, C.A. 1989. Habitat Use and Streamflow Needs of Rare and Endangered Fishies, Yampa River, Colorado. US Department of the Interior Fish and Wildlife Service Washington, DC 20240. Return to Water Resources
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Date:
May 2002
Student: ssteen@willamette.edu
ENVR 327: Water Resources
Instructor: Dr. Karen Arabas
http://www.willamette.edu/~karabas/courses/envr327w