|
|
|
Infiltration characteristics of forest road filter windrows
Foltz, R.B.; Elliot, W.J. 2001.
Infiltration characteristics of forest road filter windrows
Presented January 3-5, 2000, Honolulu, HI.
In: Ascough II, J.C.; Flanagan, D.C., eds.
Soil erosion for the 21st century: proceedings of the international symposium.
St. Joseph, MI: ASAE. ASAE Pub. No. 701P0007.
Keywords: Filter windrows, Hydrophobic conditions, Hydraulic conductivity, WEPP, infiltration, road
Links:
PDF [98k]
Abstract:
A study to determine the infiltration parameters for filter windrows was undertaken. The study used a flow
rate representing the runoff from a forest road of 100 m length during a storm of 50 mm/hr. Observations
during the flow event suggested a hydrophobic-like condition existed for up to 10 minutes. The hydraulic
conductivity required by the WEPP model to reproduce the field results ranged from 80 to 200 mm/hr in the
filter windrow and from 60 to 1400 mm/hr in the forest floor. While the 1400 mm/hr value appeared to be due
to macropores, hydraulic conductivity values of 400 mm/hr for the forest floor were required for proper WEPP
simulation. These values will be incorporated in the U.S. Forest Service WEPP Road interface.
Moscow FSL publication no. 2001h
|