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A platform for research: civil engineering, architecture and urbanism
An Overview of the Design Concept and Hydraulic Modeling of the Glen Canyon Dam Multi-Level Intake Structure
The U.S. Bureau of Reclamation is currently investigating alternatives to improve habitat for endangered fish below Glen Canyon Dam. In their biological opinion on the operation of Glen Canyon Dam, the U.S. Fish and Wildlife Service recommended that Reclamation investigate ways to control the temperature of water released from the Dam. The primary goal is to establish a new population of humpback chub within the Grand Canyon. The humpback chub is currently a listed species under the Federal Endangered Species Act of 1973 and is one of the native fish species that cannot successfully reproduce because of the cold water temperatures in the Colorado River below Glen Canyon Dam. Cold temperatures are not conducive to the humpback chubs spawning or survival in the mainstem of the Colorado River. Scientists believe that increased Colorado River water temperatures would improve habitat for the native fish. However, because of complex ecological interactions between native and nonnative fish and the aquatic environment, Reclamation is proposing to scientifically test this hypothesis. The plan being investigated calls for the power intakes to be modified to allow warm surface water to be withdrawn from Lake Powell. Warm water withdrawals would likely occur during the months of June, July and August. While not quite as flexible as a traditional multi-level selective withdrawal system, like the one recently completed at Shasta Dam (Vermeyen 1998), the proposed modifications would cost much less ($1.5 million vs. $80 million at Shasta Dam) and allow temperature control studies to be conducted.
An Overview of the Design Concept and Hydraulic Modeling of the Glen Canyon Dam Multi-Level Intake Structure
The U.S. Bureau of Reclamation is currently investigating alternatives to improve habitat for endangered fish below Glen Canyon Dam. In their biological opinion on the operation of Glen Canyon Dam, the U.S. Fish and Wildlife Service recommended that Reclamation investigate ways to control the temperature of water released from the Dam. The primary goal is to establish a new population of humpback chub within the Grand Canyon. The humpback chub is currently a listed species under the Federal Endangered Species Act of 1973 and is one of the native fish species that cannot successfully reproduce because of the cold water temperatures in the Colorado River below Glen Canyon Dam. Cold temperatures are not conducive to the humpback chubs spawning or survival in the mainstem of the Colorado River. Scientists believe that increased Colorado River water temperatures would improve habitat for the native fish. However, because of complex ecological interactions between native and nonnative fish and the aquatic environment, Reclamation is proposing to scientifically test this hypothesis. The plan being investigated calls for the power intakes to be modified to allow warm surface water to be withdrawn from Lake Powell. Warm water withdrawals would likely occur during the months of June, July and August. While not quite as flexible as a traditional multi-level selective withdrawal system, like the one recently completed at Shasta Dam (Vermeyen 1998), the proposed modifications would cost much less ($1.5 million vs. $80 million at Shasta Dam) and allow temperature control studies to be conducted.
An Overview of the Design Concept and Hydraulic Modeling of the Glen Canyon Dam Multi-Level Intake Structure
Vermeyen, Tracy B. (author)
Waterpower Conference 1999 ; 1999 ; Las Vegas, Nevada, United States
Waterpower '99 ; 1-10
1999-07-05
Conference paper
Electronic Resource
English
| Engineering Index Backfile | 1961
Engineering Index Backfile | 1957
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