| 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 |
|
| 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 |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| 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 |
