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Wrangell-St. Elias National Park & PreserveFall Scene of the Crystalline Hills
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Wrangell-St. Elias National Park & Preserve
Nature & Science
 
Nature And Science
Research
Research
Learn about research in the park
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Community and Copper
Community and Copper In A Wild Land
Guidebook to the McCarthy Valley Natural and Human History
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Copper River Delta  

Did You Know?
The Copper River, which deposits 75 million tons of sediment annually into its delta and the Gulf of Alaska, has built up a layer of silt 600 feet deep. During summer months, the daily sediment transport can be 750,000 cubic feet, one of the largest river sediment loads known.

Last Updated: September 14, 2006 at 08:47 EST