WSP04101

• File Number: 8080
• Description: Section D General Interstate Litigation - Rainbow Bridge Monitoring Program
• State: CO
• Basin: Statewide
• Date: 5/21/1964
• Author: DOI-BOR
• Title: Rainbow Bridge Monitoring Program - Reports 4 through 10
• Water Supply Pro - Doc Type: Report/Study

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Status Period #9
SUMMARY OF DATE -- RAINBOW BRIDGE
for period April 1977 throug:l September 1977

WEATIlER (tal~an at Rainbow Marina Courtesy Dock WElather Station)

Air Temperature:

Maximum 970
Minimum 410
Average 720

F on date 7~27-77
F on date 4-2-77
F for, this period.

Water Temperature:

Average 69.60 F for this period.

LAKE POWELL ELEVATIONS: Maximum 3;655.18 on date 7~15-77
Minimum 3,636.70 on date 9-30-77

Conclusions

The Rainbm, Bridge monitoring program conducted during the period October
1975 through September 1977 shows nO destructive effect occurring to
Rainbow Bridge or Bridge Creek Canyon from the incursion of Lake Po~ell
into the area.

Minor environmental modification by causes other than the lake waters
is occurring.

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