9623

• UCREFRP Catalog Number: 9623
• Author: Bails, J. B.
• Title: Streamwater Quality at Selected Sites in the Fraser Basin, Grand County, Colorado, Water Years 1991-2000.
• USFW Year: 2003.
• USFW - Doc Type: \
• Copyright Material: NO

Contents
Abstract........
Introduction ................................................................................................................................................... 1
Basin Characteristics .......................................................................................................................... 1
Purpose and Scope ............................................................................................................................. 2
Data Collection and Analysis ...................................................................................................................... 2
Streamwater-Quality Results ...................................................................................................................... 4
Stream Standards ................................................................................................................................ 4
Spatial Distribution of Selected Water-Quality Constituents, Water Year 2000 ........................ 5
Temporal Trends ................................................................................................................................... 7
Summary ........................................................................................................................................................ 9
References Cited .......................................................................................................................................... 9
Figures
1. Map showing the Fraser River Basin ....................................................................................... 2
2. Map showing spatial distribution and magnitude of median concentrations of
selected water-quality constituents in the Fraser River Basin, 1991-2000 ....................... 6
3. Graph showing downstream median instantaneous load of selected constituents
in the Fraser River Basin, 1991-2000 ........................................................................................ 7
4. Graphs showing median instantaneous load for each month of selected constituents
and monthly median discharge in the Fraser River at Tabernash, site 4,1991-2000....... 8
Tables
1. Characteristics of selected streamwater-quality sites in the Fraser River Basin............ 3
2. Summary of median values of field-determined constituents at 13 sites in the
Fraser River Basin, 1991-2000 ................................................................................................... 3
3. Summary of median concentrations of selected water-quality constituents at
13 sites in the Fraser River Basin, 1991-2000 .......................................................................... 4
4. Results of the seasonal Kendall test for trends on selected nutrient species in
the Fraser River Basin, 1991 and 1995 through 2000 .............................................................. 9