Tensions Rise With Plan To Flood Grand Canyon For almost 50 years, northern Arizona's Glen Canyon Dam has been slowly eroding the Grand Canyon's riverbanks. Soon, dam managers will release simulated floods to help restore the beaches downstream. But the region's hydropower companies say the move will be costly, and could have unforseen consequences.

Tensions Rise With Plan To Flood Grand Canyon

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ROBERT SIEGEL, HOST:

From NPR News, this is ALL THINGS CONSIDERED. I'm Robert Siegel.

MELISSA BLOCK, HOST:

And I'm Melissa Block.

The Colorado River is about to run wild through the Grand Canyon again - at least a couple of times a year. This spring, Interior Secretary Ken Salazar approved a series of simulated floods that will release huge amounts of water and sediment from the Glen Canyon Dam. It's all part of an effort to restore the environment downstream, both for wildlife and for tourists. Laurel Morales of member station KJZZ reports from Flagstaff.

(SOUNDBITE OF SPLASHING WATER)

LAUREL MORALES, BYLINE: Five boats recently launched a two-week Grand Canyon river trip. The group of tourists are paddling white-water rapids, hiking side canyons and camping at river's edge. A guide goes over the basic paddling maneuvers before the boat reaches its first rapid.

UNIDENTIFIED MAN: So can we get a forward paddle?

(SOUNDBITE OF SPLASHING WATER)

UNIDENTIFIED MAN: Stop.

MORALES: Red rock canyon walls provide occasional shade and relief from the desert's heat. The rafters make their way through the first rapid and congratulate each other with a paddlers' high-five, slapping their paddles overhead and smacking the water.

(SOUNDBITE OF CHEERING)

MORALES: Sometime this evening, they'll reach camp downstream, but vast sandy beaches ideal for camping are scarce these days. The Glen Canyon Dam was built 50 years ago to store drinking water and harness hydropower for Western states. Before the dam, the silt-laden Colorado River flowed high through the Grand Canyon, creating sandy beaches along its shores. Longtime river guide Brad Dimmock has seen those beaches gradually disappear over the years. And where the water level has receded, plants have sprouted.

BRAD DIMMOCK: The vegetation is on a rampage, and it's taking over beaches at a pretty high rate of speed to where it's kind of a war between us and the vegetation in some camps.

MORALES: But the bigger conflict isn't between the river and rafters. It's between power companies and conservationists. Nikolai Lash is spokesman for Grand Canyon Trust, a conservation group. He says, currently, the power generation causes the river to ebb and flow dramatically based on electricity demand in the region.

NIKOLAI LASH: And this is done for generating as much hydropower revenue as possible. Unfortunately, it's counterproductive for the resources in Grand Canyon.

MATT KAPLINSKI: It's like the "Dr. Strangelove" movie: How I quit worrying and learned to live with the dam.

MORALES: That's geologist Matt Kaplinski. He's part of an ad hoc group of scientists, river guides, power companies and others who are charged with improving the river environment.

KAPLINSKI: That's the premise of the program is to see how we can operate this dam and balance the needs of water storage and power delivery with environmental conservation downstream.

MORALES: The best solution they've come up with are high flows. Dam managers wait until sediment accumulates upstream, then they release a large amount of water in hopes of pushing sediment downstream to rebuild beaches. It's been four years since the last high flow, which electric companies say cost them almost $4 million in lost hydropower revenue. Leslie James directs the Colorado River Energy Distributors Association, a coalition of electric companies. James is concerned about how the high flows will be conducted.

LESLIE JAMES: When you ask what will be the costs, it's really almost impossible to determine until you find out the frequency, the duration of the flow and the timing of the flow.

MORALES: Electric companies don't want to see water that was allotted to them bypass their hydroelectric turbines. That water is a valuable commodity. When states can't get electricity from the dam, they have to turn to coal, gas and other sources. But river guide Brad Dimmock says allowing these high flows is the government's responsibility to the Grand Canyon.

DIMMOCK: Once you come in and have your fingers on the controls of that dam, you are technically God. I mean, you decide how that ecosystem is going to mature.

MORALES: If there's enough water upstream, the controlled floods are scheduled to begin this fall. For NPR News, I'm Laurel Morales in Flagstaff.

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