PROJ00518

• Contract/PO #: C153484
• Contractor Name: San Luis Valley Water Conservation District
• Contract Type: Grant
• Water District: 0
• County: Rio Grande
• Bill Number: FSG
• Loan Projects - Doc Type: Feasibility Study

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USBR Study

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The USBR performed operation studies (USBR, 1955) of a 500,000 af Wagon Wheel Gap

reservoir. The USBR consideration of the Compact was more limited than the 1938

Tipton study since the USBR considered Colorado's Compact deliveries at the

stateline but did not transpose the effects of Wagon Wheel Gap operation to Rio

Grande Project Storage. Therefore, an incomplete picture was obtained in this study

of the impact of Compact provisions on the operation of a Wagon Wheel Gap Reservoir.

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The USBR study concluded that the operation of a 500,000 af Wagon Wheel Gap

Reservoir could provide a regulated average annual (1925-1951) mainstem divert able

supply of approximately 569,000 af, compared to the estimated average annual (1925-

1951) mainstem diversions of approximately 539,000 af. The 1925 through 1951 annual

flows at Del Norte average 643,000 af which is considerably greater than the less

than 600,000 af of average annual flows for the 1948-1985 period being used in this

Study.

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