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Main Title Effects of forest practices on peak flows and consequent channel response a state-of-the-science report for western Oregon and Washington / [electronic resource] :
Other Authors
Author Title of a Work
Grant, Gordon,
Publisher U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station,
Year Published 2008
OCLC Number 257637195
Subjects Forest hydrology--Oregon, Western ; Forest hydrology--Washington (State), Western ; Logging--Environmental aspects--Oregon, Western ; Forest influences--Oregon, Western ; Forest influences--Washington (State), Western ; Logging--Environmental aspects--Washington (State), Western ; Watershed hydrology--Oregon, Western ; Watershed hydrology--Washington (State), Western
Internet Access
Description Access URL
HathiTrust Digital Library, Full view http://catalog.hathitrust.org/api/volumes/oclc/236228571.html
Library Call Number Additional Info Location Last
ESAM  SD144.A13A368 no.760 Region 10 Library/Seattle,WA 03/17/2009
Collation iv, 76 p. : digital, PDF file
Notes Title from title screen (viewed on Dec. 2, 2008). "May 2008." Includes bibliographical references (p. 48-64).
Contents Notes This is a state-of-the-science synthesis of the effects of forest harvest activities on peak flows and channel morphology in the Pacific Northwest, with a specific focus on western Oregon and Washington. We develop a database of relevant studies reporting peak flow data across rain-, transient-, and snow-dominated hydrologic zones, and provide a quantitative comparison of changes in peak flow across both a range of flows and forest practices. Increases in peak flows generally diminish with decreasing intensity of percentage of watershed harvested and lengthening recurrence intervals of flow. Watersheds located in the rain-dominated zone appear to be less sensitive to peak flow changes than those in the transient snow zone; insufficient data limit interpretations for the snow zone. Where present, peak flow effects on channel morphology should be confined to stream reaches where channel gradients are less than approximately 0.02 and streambeds are composed of gravel and finer material. We provide guidance as to how managers might evaluate the potential risk of peak flow increases based on factors such as presence of roads, watershed drainage efficiency, and specific management treatments employed. The magnitude of effects of forest harvest on peak flows in the Pacific Northwest, as represented by the data reported here, are relatively minor in comparison to other anthropogenic changes to streams and watersheds.
Place Published Portland, Or.
Access Notes Mode of access: Internet from the Forest Service web site. Address as of 12/2/08: http://www.fs.fed.us/pnw/pubs/pnw%5Fgtr760.pdf; current access available via PURL.
Corporate Au Added Ent Pacific Northwest Research Station (Portland, Or.)
Title Ser Add Ent General technical report PNW ; 760.
PUB Date Free Form 2008
Series Title Untraced General technical report PNW ; GTR-760
BIB Level m
Medium electronic resource
Cataloging Source OCLC/T
Merged OCLC records 624851934; 681408195
OCLC Time Stamp 20090309201116
Language eng
SUDOCS Number A 13.88:PNW-GTR-760
Origin OCLC
Type CAT
OCLC Rec Leader 03529cam 2200445Ia 45020