Sediment Model 2 (SEDMODL2) is a GIS-based road erosion and delivery model designed to identify road segments with high potential for delivering sediment to streams. The model uses an elevation grid combined with road and stream information layers to produce what is essentially a computer-generated version of the Washington surface road erosion model. It estimates background sediment, generation of sediment for individual road segments, finds road/stream intersections, and estimates delivery of road sediment to streams.
Click the link below to download a compressed file that contains data files for rainfall factor coverages and user support documentation in PDF format. To request these files on CD-ROM, send your request to firstname.lastname@example.org.
Download SEDMODL2 data and documentation (ZIP file, 81 MB)