Lower Siletz Watershed– Lincoln County, Oregon Prepared by: Mark Barnes & Brandon Button ES 341 Physiography Watershed Location The Lower Siletz Watershed has very low elevations because it is closer to the coast and has a large amount of vegetation cover due to the amount of The Lower Siletz Watershed is located in the Northern end of Lincoln precipitation. County, the Lower Siletz River itself flows south and then to the east. It is south of Lincoln city and north of Newport. Hydrologic Summary Figure 9: DOQ (Digital Orthophoto Quad’s) Figure 5: This shows all of the streams and all the Sub-Basins in the Lower Siletz Watershed. Figures 6 & 7: These show the Precipitation numbers for the Lower Siletz Watershed. The amounts are very large because the watershed is in the coast range which receives large amounts precipitation. Figure 1: Counties that surround the Lower Siletz Watershed. Figure 2: Lower Siletz Watershed in Oregon. Figure 10: DEM (Digital Elevation Model) Figure 5: Lower Siletz Streams General Geology and Sub-basin. The Geology of the Lower Siletz is comprised of many different bed rocks There are so many different types of soils we were not able to identify all of them. Figure 6: Lower Siletz Precipitation And Streams. Conclusions The Lower Siletz Watershed is a very unique and beautiful area. It is comprised of many different. It is full of many different plant life and made up of many soils and bedrocks. Figure 3: Lower Siletz Watershed Geology. (Bed Rock) Figure 7: Annual Precipitation. Vegetation Figure 8: The Vegetation is common with the coast range, comprising of References Cited Firs, Maples, Alders, and lots of forest floor covers. Dept. of Agricutlure. "Natural Resources Data Department." Http://www.oregon.gov/DAS/EISPD/GEO/index.shtml. Figure 8: Lower Siletz Vegetation. Dept. of Agricutlure. "Natural Resources Data Department." Http://www.oregon.gov/DAS/EISPD/GEO/index.shtm University of Oregon: Geographic information Systems Figure 4: Lower Siletz http://libweb.uoregon.edu/map/map_section/quad_list.htm Watershed Soils.
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