| Abstract: | The Redwood Creek Unit of Redwood National Park, Calif., is located in the downstream end of an exceptionally rapidly eroding drainage basin. Although intense storms control the timing and general magnitude of major erosion events, the movement, types, and amounts of erosion occurring during those events are substantially influenced by land use. Erosional impacts of past timber harvest in the basin reflect primarily the cumulative impact of many small erosion problems caused not so much by removal of standing timber as by the pattern of ground surface disruption accompanying removal. Recently modified riparian and aquatic environments reflect stream channel adjustments to recently increased water and sediment discharges, and are classified by the National Park Service as damaged resources because the modifications reflect, in part, unnatural causes. Natural debris barriers along stream flowing through remaining old-growth forest have temporarily stored substantial quantities of sediment introduced into streams by recent storms and upstream land-use changes. Removal of merchantable timber from these barriers may destroy their stability and cause rapid release of stored sediment. Additionally, massive erosion in some recently harvested areas suggest that they are so erosionally sensitive that following rehabilitation and reforestation, they should not be reharvested. (Woodard-USGS) |
| Genre: | USGS Numbered Series |
| ProdID: | 19538 |
| Citation Author: | Janda, Richard J. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | 82 p. :ill., maps ;28 cm. |
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| Citation Publisher: | U.S. Geological Survey, |
| Citation Series: | Open-File Report |
| Citation Series Code: | OFR |
| Citation Series Number: | 78-25 |
| Citation Search Results Text: | Summary of watershed conditions in the vicinity of Redwood National Park, California; 1977; OFR; 78-25; Janda, Richard J. |
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| Citation Year: | 1977 |
| Type: | citation/reference |
| Text: | Summary of watershed conditions in the vicinity of Redwood National Park, California; 1977; OFR; 78-25; Janda, Richard J. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/usgs_thumb.jpg |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. Geological Survey, |
