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Florentiu Damian |
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University of Washington |
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12/12/2001 |
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Sedimentation from forest roads |
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Cross drain systems |
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Interactive design tools |
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New decision support tool |
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Stream crossing |
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Damage to water quality and aquatic habitat |
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Road design restrictions |
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Divert sediment onto the forest floor |
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Divert sediment onto the forest floor |
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Sediment production based on: |
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Road grade and length |
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Road age |
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Surface material and condition |
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Traffic |
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Cut slope condition |
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Local climate |
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Soil and parent material |
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Divert sediment onto the forest floor |
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Cross drain location = key factor |
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Sediment production |
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Delivery potential based on: |
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Distance along surface flow path to stream |
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Terrain filtering capabilities |
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Divert sediment onto the forest floor |
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Cross drain location = key factor |
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Sediment production |
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Delivery potential |
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Divert sediment onto the forest floor |
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Cross drain location = key factor |
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Sediment production potential |
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Sediment delivery potential |
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Multiple factors, difficult evaluation |
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Analysis packages not appropriate |
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Wepp:road |
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Delivered sediment per time period |
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One road segment at a time |
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Multiple factors, difficult evaluation |
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Analysis packages not appropriate |
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Emerging technologies |
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More accurate flow path determination |
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GIS based decision support tool |
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Instant evaluation of culvert placement decision |
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Graphic feedback response |
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GIS based decision support tool |
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Instant evaluation of culvert placement decision |
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Graphic feedback response |
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Easy to use |
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Quickly generates good solutions |
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User experience |
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Cross drain design principles |
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Analysis packages |
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Decision support tools |
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Technological advancements |
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New GIS culvert spacing tool |
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Notes