WSP04777

• File Number: 8274.200
• Description: Colorado River Basin Salinity Control - General Basinwide Salinity Issues
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 1/1/1984
• Title: Dissolved Solids Load in the Upper Colorado River Basin
• Water Supply Pro - Doc Type: Report/Study

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Chapter B, cont,

2. Trend analyses

a, Long-term trends over the entire period of record, using
Seasonal Kendall analysis

1. Annual trends (fig. 13, table 3)
2. Monthly trends (fig. 14, table 4)

b. Step trend based on historical evidence for a change,
using PROC SEASR (focus on landuse development)

1. Annual trends
2, Monthly trends

c. Results of trend analysis 9fig. 15, fig. 16, App. F)

3. Effects of trends in climate and streamflow on trends in
dissolved solids (reference to Chapter A and comparison of
results)

V. Results

A. Source areas of dissolved solids and constituents

1.' Relate our results to Bureau of Reclamation reports on Meeker
bome, Glenwood Springs, etc,
2, Relate,to Iorns et al" Warner et al., and others
3, Downstream from reservoir sites, discuss our results in terms
of detailed reports on effects of specific reservoirs in the
Upper Colorado River' basin

B. Apparent causes of trends

1. Related to natural effects (e,g. climate)
2. Related to human impacts

C. Potential impacts of observed trends

1. Hazard to agriculture
2. Degradation of drinking water
3. Increased treatment costs
4. Increased degradation of industrial and municipal equipment
5. Cost estimates similar to Bureau of Reclamation for salinity at
Imperial Dam

D. Legal implications

E.

Ditection of future research

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