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Flooding in the middle Koyukuk River basin, Alaska, August 1994

Water-Resources Investigations Report 95-4118

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Abstract

During August 1994, a flood on the Koyukuk River, Alaska, inundated the villages of Allakaket and Alatna and parts of Hughes. Topographic maps of the inundated areas, showing peak water-surface elevations and depths of water, indicate that flooding ranged from 2 to more than 10 feet deep in Allakaket, from 8 to more than 10 feet deep in Alatna, and from 0 to more than 10 feet deep in Hughes. Severe damage to buildings occurred in Allakaket and Alatna; minor damage occurred in Hughes, although some homes were irreparably damaged by inundation. Between the mouth of the Kanuti River, about 10 miles downstream from Allakaket, to Hughes, the peak discharge was about 330,000 cubic feet per second. A flow of that magnitude at Hughes has an annual probability of occurrence of 1 percent.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Flooding in the middle Koyukuk River basin, Alaska, August 1994
Series title:
Water-Resources Investigations Report
Series number:
95-4118
Edition:
-
Year Published:
1995
Language:
ENGLISH
Description:
2 maps ; 77 x 119 cm. and 60 x 89 cm., folded in envelope 32 x 25 cm. + 1 text (8 p. : ill., map ; 28 cm.)