Woodam Chung University of Montana Han-Sup Han University of Idaho.

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Presentation transcript:

Woodam Chung University of Montana Han-Sup Han University of Idaho

WEPP:ROAD Water Erosion Prediction Project (WEPP) Developed by the USDA Forest Service Estimates road related erosion and sediment amount delivered into stream Environment

NETWORK2000 Transportation routes Road construction Mill1Mill2Mill3 Sale1 Super Mill Sale Economics NETWORK2000 Input and Output Road location Multiple destinations and time periods

WEPP:ROADNETWORK2000 NETWORK+WEPP

Mica Creek watershed Network representation of the Mica Creek road system NETWORK+WEPP Estimated sediment yields (ton/year/segment) by WEPP User-defined environmental cost Running WEPP batch from NETWORK2000 Environmentally Sound and Economically Efficient Road Systems

Alternative Harvest Operations Road Costing Model Construction Maintenance Stump-to-Landing Cost Harvesting systems Skidding distance Optimal road spacing Identifying appropriate route alternatives to meet management objectives

Stump-to-Landing … Logging cost… Low ………………………………………………………… High Impacts on soils High ………………………………………………………… Low

Stump-to-Truck … Logging cost…(Keegan, 1995) $ 89/MBF $123/MBF $148/MBF $233/MBF Impacts on soils: % area soil disturbance 25% 20% 2% ?

Road Costing Model Construction Maintenance design standards terrain characteristics climatic conditions Aid in identifying appropriate route alternatives to meet management objectives

Questions???