Pomeroy Ranger District (Or. and Wash.)2008-06-242008-06-242002-08https://hdl.handle.net/1794/6671264 pp. Tables, figures, references, maps, appendices, illus. "The Tucannon River subbasin covers about 322,000 acres of Garfield and Columbia counties. Two major streams drain this subbasin, the Tucannon River, which flows into the Snake River, and Pataha Creek, which is the largest tributary to the Tucannon River. Other tributaries to the Tucannon River include Willow Creek, Kellogg Creek, Cummings Creek, Little Tucannon River, Panjab Creek, Sheep Creek, and Bear Creek. The upper portion of the Tucannon subbasin, which is the focus of this report, is contained within the Umatilla National Forest." Date of map appendix is August 2002. Captured June 18, 2008.Provides analysis of Umatilla National Forest lands within the watershed, characterizing the historic and current biotic and abiotic conditions. Findings include a declining vegetation diversity, 55% of the upland forest has tree densities exceeding recommended levels, wildfire risks are severe in many sections, the Tucannon River has become wide and shallow without woody material and possessing degraded fish habitat, roads continue to contribute sediment and create some channel instability, twelve invasive weed species are present, the clustered lady slipper is the only Forest Sensitive Plant present, 173 historic properties have been located, one endangered and two threatened species are on the Forest Plan list, the total amount of late-old structure is below desirable levels, and prescribed burning should be performed periodically to maintain forage quality.6604229 bytesapplication/pdfen-USForest management -- Umatilla National Forest (Or. and Wash.)Watershed management -- Umatilla National Forest (Or. and Wash.)Vegetation management -- Umatilla National Forest (Or. and Wash.)Other