Environmental Experiences
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High-Flow Experiment on the Colorado River

Before and After Pictures

In March 2008, the Department of the Interior conducted a high-flow experiment on the Colorado River. High releases from Glen Canyon Dam were aimed at enlarging camping beaches and improving backwater habitat for the endangered humpback chub. High amounts of sediment in the river system following last summer's monsoon storms triggered this experiment. Grand Canyon National Park's Science and Resource Management staff were on the river monitoring the high-flow conditions as they occurred and will be involved in long-term studies.

Results from this experiment will inform managers on future high-flow tests. Before, during, and after pictures show that the high flows had an immediate effect on riverine resources within Grand Canyon.

Lees Ferry to Phantom Ranch Photos

Phantom Ranch to Diamond Creek Photos

For additional information on the High-Flow Experiment

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High-Flow Experiment
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