9521

• UCREFRP Catalog Number: 9521
• Author: Liebermann, T. D., D. K. Mueller, J. E. Kircher and A. F. Choquette.
• Title: Characteristics and Trends of Streamflow and Dissolved Solids in the Upper Colorado River Basin, Arizona, Colorado, New Mexico, Utah, and Wyoming.
• USFW Year: 1989.
• USFW - Doc Type: Denver.
• Copyright Material: NO

21. Mean chemical composition of dissolved solids at selected sites in
San Juan region 51
22. Mean daily streamflow at selected sites in San Juan subregion of San
Juan region 53
23. Step trends at site 61 from 1956-61 to 1964-83 54
24. Daily streamflow at site 69 56
25. Mean daily streamflow at selected sites in main-stem subregion of
San Juan region 57
26. Step trends at site 69 from 1942-62 to 1966-80 58
27. Monthly dissolved-solids concentration in Lake Powell inflow and
outflow 59
28. Monthly change in Lake Powell volume that is not explained by
inflow-outflow mass balance 60
29. Monthly change in Lake Powell dissolved-solids load that is not ex-
plained by inflow-outflow mass balance 61
TABLES
1. Diversions that export water from the Upper Colorado River Basin 11
2. Reservoirs with a normal capacity greater than 5,000 acre-feet located in the
Upper Colorado River Basin 12
3. Streamflow-gaging stations for which dissolved solids were estimated 16
4. Annual step trends for sites affected by major interventions in the Upper
Colorado River Basin 19
5. Mean annual values of runoff, streamflow, dissolved-solids concentrations and
loads, and major-constituent loads-Grand region 21
6. Selected annual monotonic-trend-analysis results-Grand region 23
7. Mean annual values of runoff, streamflow, dissolved-solids concentrations and
loads, and major-constituent loads-Green region 34
8. Selected annual monotonic-trend-analysis results-Green region 36
9. Mean annual values of runoff, streamflow, dissolved-solids concentrations and
loads, and major-constituent loads-San Juan region 50
10. Selected annual monotonic-trend-analysis results-San Juan region 52
CONVERSION FACTORS
For use of readers who prefer to use metric (International System) units, conversion factors for inch-pound
units used in this report are listed below:
Multiply inch-pound unit By To obtain metric unit
acre 0.4047 hectare
acre-foot (acre-ft) 1,233 cubic meter
acre-foot per year (acre-ft/yr) 1,233 cubic meter per annum
cubic foot per second (ft3/s) 0.028317 cubic meter per second
foot (ft) 0.3048 meter
inch (in.) 25.40 millimeter
mile (mi) 1.609 kilometer
square mile (mi) 2.590 square kilometer
ton, short 907.2 kilogram
ton per year (ton/yr) 907.2 kilogram per annum
Temperature in degree Fahrenheit (°F) can be converted to degree Celsius (°C) as follows:
°C=5/9 (°F - 32)
To convert discharge, multiply cubic foot per second (ft3/s) by 1.983 to obtain acre-foot per day (acre-ft/d).
Another term and abbreviation used in this report is:
milligram per liter (mg/L)
VI Contents