Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Characterization of water quality in selected tributaries of the Alamosa River, southwestern Colorado, including comparisons to instream water-quality standards and toxicological reference values, 1995-97 /
Author Ortiz, Roderick F. ; Ferguson, S. A.
Other Authors
Author Title of a Work
Ferguson, Sheryl A.
CORP Author Geological Survey, Denver, CO. Water Resources Div. ;Environmental Protection Agency, Washington, DC.
Publisher U.S. Dept. of the Interior, U.S. Geological Survey : Information Services,
Year Published 2001
Report Number USGS/WRIR-00-4170
Stock Number PB2001-105076
Subjects Water--Pollution--Colorado--Alamosa River Watershed. ; Water quality--Colorado--Alamosa River Watershed.
Additional Subjects Water quality ; Tributaries ; Alamosa River ; Drainage basins ; Ecological concentration ; Water pollution sampling ; Risk assessment ; Stream flow ; PH factor ; Land use ; Colorado ; Data collection
Library Call Number Additional Info Location Last
NTIS  PB2001-105076 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
Collation 38 pages : map ; 28 cm.
A comprehensive water-quality sampling network was implemented by the U.S. Geological Survey from 1995 through 1997 at 12 tributary sites to the Alamosa River. The network was designed to address data gaps identified in the initial ecological risk assessment of the Summitville Superfund site. Tributaries draining hydrothermally altered areas had higher median values for nearly all measured properties and constituents than tributaries draining unaltered areas. Colorado instream standards for pH, copper, iron, and zinc were in attainment at most tributary sites. Instream standards for pH and chronic aquatic-life standards for iron were not attained in Jasper Creek. Toxicological reference values were most often exceeded at Iron Creek, Alum Creek, Bitter Creek, Wightman Fork, and Burnt Creek. These tributaries all drain hydrothermally altered areas.
Includes bibliographical references (page 16). Microfiche.