USGS - science for a changing world

Colorado Water Science Center

Home Information/Data Projects Publications WebCams Contact Follow UsTwitter

CO Map with project location


Water-Quality Monitoring of the Vallecito Reservoir Watershed

    • Overview
    • Study Area
    • Site Photos
    • Data
    • Related Links
    • Illustrations
    • Publications
    • References
    • Email for Information


Water-Quality Monitoring of the Vallecito Reservoir Watershed

Study Area: Vallecito Reservoir
Period of Project: July 1996 – July 1997, May 2000 – present
Project Number: CO306
Project Chief: Tony Ranalli
Cooperator: Pine River Irrigation District, Pine River Watershed Stakeholders Group


The USGS is characterizing the quality of surface-water resources in the Vallecito Reservoir watershed. The study will define the natural processes controlling the amount of nutrients in the reservoir so the effect of future population growth and development in the watershed on water quality can be documented.


  1. To define baseline water quality of the watershed over a 4-to-5 year period.
  2. To define which water quality constituents need to be monitored over the long term (10 to 20 years) as the watershed changes due to growth and development.
  3. To document trends in water quality constituents and causes for the trends, if they occur.

Accessibility FOIA Privacy Policies and Notices

U.S. Department of the Interior | U.S. Geological Survey
Page Contact Information: gs-w-codist_webmaster
Page Last Modified: Thursday, 15-Dec-2016 17:51:45 EST