On behalf of Living Rivers, www.livingrivers.org
Comments needed to halt the operation of Glen Canyon Dam
Submit comments by: Wednesday, August 31, 2005
The Bureau of Reclamation is accepting public comments on the reoperation of the nation's two largest reservoirs, Lake Powell and Lake Mead. Your voice is needed to demand that they examine the viability of permanently ceasing operations at Lake Powell and employing just one reservoir to capture and manage the bulk of Colorado River flows.
Join in calling for the The One-Dam Solution as outlined in Living Rivers' new report prepared for the reoperation public scoping process. Review our press release and download the document by visiting: http://www.livingrivers.org/archives/article.cfm?NewsID=675
Let the Bureau of Reclamation know that:
* No longer a need for a single-use dam at Glen Canyon
It was not until the fall of 2004, more than 40 years after Glen Canyon Dam began impounding Lake Powell that Lake Powell water storage actually augmented water storage downstream. But with climate change already causing long-term flow reductions, and water consumption levels near the river's historic average flow and rising, it's unlikely that Lake Powell will fill again. The surplus water that filled it during 17 years the first time is no longer there to build a storage cushion. Even should surplus water accumulate, Lake Mead on its own could accommodate it.
* It's time for more efficient storage
With Lake Powell and Lake Mead losing to evaporation upwards of 17 percent of the water that flows into them, it's time that more efficient means be explored for storing this precious water. Vacant space in underground aquifers on, or accessible to, existing Colorado River infrastructure could accommodate more water than these two reservoirs combined-and with far greater efficiency. Upwards of 810,000 acre-feet of water annually-enough water for 1.6 million households of four people each-could be saved by eliminating Lake Powell and operating Lake Mead principally for distribution to groundwater recharge facilities.
* Revive Grand Canyon
Between Lake Powell and Lake Mead lies one of the world's most famous and geologically and ecologically unique river canyons, Grand Canyon National Park. The operation of both these reservoirs has impacted the Canyon, but Glen Canyon Dam has been far more devastating. Since its completion four of eight native fish have gone extinct and the dam has trapped the sediment necessary to maintain habitat and beaches for wildlife and recreation, as well as the stabilization of archeological sites.
* Manage the sediment
Sediment is a major unresolved problem threatening the long-term operations of Lake Powell and Lake Mead. Ultimately, sediment will have to be removed from one or both of these reservoirs. Removing sediment from Lake Mead rather than Lake Powell is the most feasible and least expensive likely alternative. While original estimates projected that sediment would not effect the safe operations of Glen Canyon Dam for another 60 years, scientists now warn that major problems could occur sooner.
* Revise the Colorado River Compact
The Colorado River Compact of 1922, which largely governs the discharge of flows from Lake Powell to Lake Mead, cannot meet its intended purpose of sharing Colorado River water equitably between the Upper and Lower Basin states. The Compact allocated 11 percent more water than the river has to give, and affords the Lower Basin 20 percent more water than the upper basin. With river flows expected to decline 18 percent by 2040, this inequity will worsen as the Upper Basin is required to deliver to the Lower Basin its full share regardless of declines in river flow.
While the Bureau of Reclamation will state that its present focus is developing strategies solely for low reservoir conditions, stress that given the growing challenges and looming shortages facing Colorado River water users as a result of these dams, that a far more comprehensive assessment addressing the issues above is fully warranted, and should be done through an Environmental Impact Statement.
All comments must be received by close of business (4:00 p.m. Mountain Daylight or Pacific Daylight Time) on Wednesday, August 31, 2005.
Comments can be mailed, faxed, or e-mailed to:
Mr. Bob Johnson, Regional Director
Bureau of Reclamation, Lower Colorado Region
P.O. Box 61470
Boulder City, NV 89006-1470
Fax (702) 293-8156
Mr. Rick Gold, Regional Director
Bureau of Reclamation, Upper Colorado Region
125 South State Street
Salt Lake City, Utah 84318-1147
Fax (801) 524-3858
For Additional Information:
The One Dam Solution: Preliminary report by Living Rivers to the Bureau of Reclamation on proposed reoperation strategies for Glen Canyon and Hoover Dam under low water conditions.
Reclamation Seeks Public Comment on Development of Management Strategies for Lake Powell and Lake Mead Under Low Reservoir Conditions
Federal Registry Notice announcing public comment period on reoperation of the reservoirs