Relations of Benthic Macroinvertebrates
to Concentrations of Trace Elements in Water, Streambed
Sediments, and Transplanted Bryophytes and Stream Habitat
Conditions in Nonmining and Mining Areas of the Upper Colorado
River Basin, Colorado, 1995-98 by Scott Mize and Jeff Deacon.
Traveltime Characteristics of Gore Creek
and Black Gore Creek, Upper Colorado River Basin, Colorado
by Jason Gurdak, Norm Spahr, and Rick Szmajter.
Water-Quality Data Analysis of the Upper
Gunnison River Watershed, Colorado, 1989-99 by Jason Gurdak,
Adrienne Greve, and Norm Spahr
Two UCOL surface water sites are part
of the NAWQA Cycle II Trends Network (see map below). This network
replaces the low intensity phase sampling network of NAWQA Cycle
I.
Site 09163500, Colorado River at Colorado-Utah
state line is the outlet of the study unit. The site is
an integrator for all land-use and anthropogenic affects
on water quality.
Dry Fork of Roan Creek, station
09095300, was chosen as a reference site for the Colorado
Plateau physiographic province. There is a small amount
of ranching in the basin, but the site is representative
of small streams in the region. This site was operated during
the HIP of 1996-1998 and was reestablished in November 2000
as part of the surface water trends network.
Surface water samples were collected
for the analysis of nutrient, major ion, and pesticide (State
Line site) concentrations. Habitat and biological samples were
collected in August at the State Line site. Due to drought conditions,
habitat sampling only was accomplished during August at the
Dry Fork Site.
U.S. Department of the Interior
U.S. Geological Survey
Comments to: webmaster_co@usgs.gov
URL: http://co.water.usgs.gov/nawqa/ucol/
Last Modified:
2006-02-09