Author: Chris P. FaubionPublisher:
ISBN:
Category : Erosion
Languages : en
Pages : 61
Book Description
Sediment Production and Delivery from Timber Harvest Roads in Humboldt County, California
Author: Chris P. FaubionPublisher:
ISBN:
Category : Erosion
Languages : en
Pages : 61
Book Description
Sediment Yield in Salmon Creek After Decommissioning Logging Roads, Northern Humboldt County, California
Author: Malia S.B. GonzalesPublisher:
ISBN:
Category : Erosion
Languages : en
Pages : 167
Book Description
Salmon Creek watershed is located in the Headwaters Forest Reserve in northern California and is known for the ecological value of its old-growth redwood forest, high biodiversity, and sensitive habitat for endangered species. The Bureau of Land Management primarily manages the Reserve. The land-use history of the Upper Salmon Creek watershed includes extensive timber harvest and road development. Watershed restoration in the Upper Salmon Creek watershed started in 2000 with the primary goal for the Reserve to protect and recover ecologic diversity and threatened native species. Since then, of the 23 miles, 13.5 miles of logging roads and 101 stream crossings have been decommissioned and treated, with 2 miles maintained, 2.4 miles passively restored, and 5.1 miles still requiring assessment. The restoration work is focused on long term reduction in sediment delivery from erosional sites that have historically degraded water quality in the Salmon Creek watershed. A stream monitoring station is located in the Upper Salmon Creek watershed that uses a turbidity threshold sampling protocol based on turbidity, stage, and temperature. The objective is to evaluate the data collected from Water Year (WY) 2012 to 2019 to assess the sediment yield in the watershed. The field and laboratory data collected at the stream monitoring station were used to further understand the relationships between hydrology, sediment transport, and land-use, and to estimate sediment load from WY 2012 to 2019. Additionally, two precipitation-monitoring stations were installed in the Upper Salmon Creek watershed during WY 2019, to provide a more spatially representative rainfall data set.
Sediment Production and Delivery from Forest Roads in the Sierra Nevada, California
Author: Drew Bayley Rogers CoePublisher:
ISBN:
Category : Erosion
Languages : en
Pages : 220
Book Description
Sediment Production and Delivery from Hillslopes and Forest Roads in the Southern Sierra Nevada, California
Author: Allison K. StaffordPublisher:
ISBN:
Category : Erosion
Languages : en
Pages : 380
Book Description
Total Maximum Daily Loads for Sediment
Author: Publisher:
ISBN:
Category : Redwood Creek (Humboldt County, Calif.)
Languages : en
Pages : 58
Book Description
General Technical Report PSW.
Author: Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 700
Book Description
Geomorphic Processes and Aquatic Habitat in the Redwood Creek Basin, Northwestern California
Author: A Sediment Budget for the Grouse Creek Basin, Humboldt County, California
Author: Mary A. RainesPublisher:
ISBN:
Category : Erosion
Languages : en
Pages : 0
Book Description
A sediment budget constructed for the Grouse Creek basin in northern California provides information on the sources and timing of sediment production to aid land managers in understanding the effects of logging impacts in a sensitive watershed. The sediment budget yields a sediment production rate of 1,750 t/km2/yr for a 29-year period. This rate is among the highest for such disturbed forested basins in the Pacific Northwest. Approximately 40 percent of the Grouse Creek basin, which is bisected by regional structural features that have created zones of weak and altered rock, has been logged in the last 35 years. Sediment production is dominated by mass wasting and is concentrated in areas of geologic instability and logging and during major storms. Over 86 percent of all sediment was produced by landsliding, with 71 percent of landslide volumes generated during a six-year period that includes the flood of December 1964. Ninety-three percent of all sediment volumes were generated during the 15-year period from 1960 to 1975 that included four major storm events, the completion of 74 percent of basin logging activity and 80 percent of road building. Landsliding in old growth was found to be spatially related to erosion in managed areas. Sediment produced in logged and roaded areas increased the frequency of streamside landsliding in some downstream, unmanaged areas by channel aggradation and lateral corrosion of the streambanks. The remainder of sediment produced from erosion of streambanks, bare hillslopes, and roads is less than 14 percent of the total sediment production. However, as landsliding decreased after 1975, the relative importance of hillslope erosion and road-related erosion increased. Erosion rates from roads are 20 to 140 times the erosion rates in the unmanaged areas and 7 to 34 times those in logged areas. Erosion processes in Grouse Creek were found to differ by stream order. Debris torrents and streambank erosion dominate in second and third-order channels, whereas streamside landsliding was more frequent in fourth through sixth-order streams. An estimate of the increase in stored sediment indicates 27 percent of the sediment introduced to stream channels during the 29-year period of the study is still in the system.
Sediment Routing in Tributaries of the Redwood Creek Basin
Author: John PitlickPublisher:
ISBN:
Category : Redwood Creek (Calif.)
Languages : en
Pages : 74
Book Description
Proceedings of the Conference on Coastal Watersheds
Author: Publisher:
ISBN:
Category : Caspar Creek Watershed (Calif.)
Languages : en
Pages : 160
Book Description