WSP06444

• File Number: 8441.400
• Description: The Colorado Big Thompson Project - Reports
• Basin: South Platte
• Water Division: 1
• Date: 1/1/1951
• Author: National Park Serv
• Title: Recreational Reconnaissance Report on the Rattlesnake Reservoir Colorado-Big Thompson Project
• Water Supply Pro - Doc Type: Report/Study

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pits, canals, tunnels or other project facilities, inasmuch as they have

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a definite bearing on recreational values and developments.

C. Recommendations

1.' It is recommended that sufficient land be acquired around the

res0rvoir in order to assure public access to all points on the shore

line where not inconsistent with plans and agreements of the Bureau of

Heclallk'ltion.

2.' It is recommended that the Ibtional Park Service be advised

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of any changes in the prc:went plans of the Bureau, that would affect

location, construction or operation of tile proposed reservoir and of the

authorization of any additional reservoirs in the project.

5. It is recomlJlended that the Bureau consider the administration

and maintenance of the potential recreational development as a part of

their responsibility;

4. It is recommended that excavation activities be carefully

watched for possible cultural material in deeply buried sites.

III PURPOSE: OF 'mE HESERVOm

A. The. purpose of the Rattlesnake Reservoir is to divert the

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incoming water from the Rattlesnake Pres6fire' Tunnel to the Bald Mountain

Pressure Tunnel under a head sufficient to operate the Flatiron power

plant satisfactorily. This satisfactory head in the reservoir ties

between elevations 6580 cmd 6574 feet.

B. Rattlesnake Dam is to be an earth and rock fill dam with a height

of approximately 90 feet at the maximum section and crest length of

approximatetY 1100 feet. The dam will impound a reservoir having 92.5

s\lrface acres at the maximum operating level of 6580.

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