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43 results found
Our primary objective is to relate estimated suspended sediment loads to land use and geology.
Author(s): Patrick Donovan, Rand Eads, C. Hobart Perry
Keywords: PSW4351, turbidity, suspended sediment, geology
Source: Page 13, in: Humboldt Bay and Watershed Symposium, 8-9 February 2002, Eureka, California. Eureka, California: University of California, Cooperative Extension.
Year: 2002
A programmable calculator connected to an interface circuit can control automatic samplers and record streamflow data. The circuit converts a voltage representing water stage to a digital signal. The sampling program logs streamflow data when there is a predefined deviation from a linear trend in…
Author(s): Rand E. Eads, Mark R. Boolootian
Keywords: PSW4351, Caspar Creek, automatic pumping samplers, streamflow, suspended sediment, sampling, water quality, data logger, programmable calculator
Source: Research Note PSW-376. Berkeley, California: Pacific Southwest Forest and Range Experiment Station, Forest Service, U.S. Department of Agriculture. 8 p.
Year: 1985
Abstract - A depth proportional intake boom for portable pumping samplers was used to collect suspended sediment samples in two coastal streams for three winters. The boom pivots on the stream bed while a float on the downstream end allows debris to depress the boom and pass without becoming…
Author(s): Rand E. Eads, Robert B. Thomas
Keywords: PSW4351, Caspar Creek, pumping sampler, water quality, suspended sediment, statistics, sampling, watershed
Source: Water Resources Bulletin 19(2): 289-292.
Year: 1983
Abstract - Redwood Sciences Laboratory, a field office of the USDA Forest Service, Pacific Southwest Research Station has developed and refined methods and instrumentation to monitor turbidity and suspended sediment in streams of northern California since 1996. Currently we operate 21 stations and…
Author(s): Rand Eads, Jack Lewis
Keywords: PSW4351, sediment, water, turbidity threshold sampling, suspended sediment, data logger, data collection
Source: In: Turbidity and other sediment surrogates workshop (ed. by G.D. Glysson & J.R. Gray). 30 April - 02 May 2002, Reno, Nevada. 3 p.
Year: 2002
Abstract - When monitoring suspended sediment for watershed research, reliable and accurate results may be a higher priority than in other settings. Timing and frequency of data collection are the most important factors influencing the accuracy of suspended sediment load estimates, and, in most…
Author(s): Rand Eads, Jack Lewis
Keywords: PSW4351, Caspar Creek, suspended sediment, turbidity, automatic sampling, water quality
Source: In: Renard, Kenneth G.; McElroy, Stephen A.; Gburek, William J.; Canfield, H. Evan; Scott, Russell L., eds. First Interagency Conference on Research in the Watersheds, October 27-30, 2003. U.S. Department of Agriculture, Agricultural Research Service; 567-571.
Year: 2003
Abstract - Automated data collection is essential to effectively measure suspended sediment loads in storm events, particularly in small basins. Continuous turbidity measurements can be used, along with discharge, in an automated system that makes real-time sampling decisions to facilitate sediment…
Author(s): Jack Lewis
Keywords: PSW4351, particle size, regression, sampling, suspended sediment, turbidity
Source: In: Bogen, J. Tharan Fergus and Des Walling (eds.), Erosion and Sediment Transport Measurement in Rivers: Technological and Methodological Advances (Proc. Oslo Workshop, 19-20 June 2002). IAHS Publ. 283: 13-20.
Year: 2003
Abstract - The paper discusses an automated procedure for measuring turbidity and sampling suspended sediment. The basic equipment consists of a programmable data logger, an in situ turbidimeter, a pumping sampler, and a stage-measuring device. The data logger program employs turbidity to govern…
Author(s): Jack Lewis, Rand Eads
Keywords: PSW4351, Caspar Creek, turbidy, suspended sediment, data logger, pumping sampler, storm load estimation, watershed
Source: Pages III-110 - III-117, in: Proceedings of the Seventh Federal Interagency Sedimentation Conference, 25-29 March 2001, Reno, Nevada. Federal Interagency Project, Technical Committee of the Subcommittee on Sedimentation.
Year: 2001
Abstract - Models are fit to 11 years of storm peak flows, flow volumes, and suspended sediment loads on a network of 14 stream gaging stations in the North Fork Caspar Creek, a 473-ha coastal watershed bearing a second-growth forest of redwood and Douglas-fir. For the first 4 years of monitoring,…
Author(s): Jack Lewis, Sylvia R. Mori, Elizabeth T. Keppeler, Robert R. Ziemer
Keywords: PSW4351, Caspar Creek, watershed, clearcut, suspended sediment, storm runoff, logging, streamflow, road building, geomorphology, hydrology
Source: In: Mark S. Wigmosta and Steven J. Burges (eds.) Land Use and Watersheds: Human Influence on Hydrology and Geomorphology in Urban and Forest Areas. Water Science and Application Volume 2, American Geophysical Union, Washington, D.C.; 85-125.
Year: 2001
The Caspar Creek Experimental Watershed was set up as a traditional paired watershed to investigate the effects of logging and road construction on erosion and sedimentation. Research participants have come from the California Division of Forestry, the Pacific Southwest Forest and Range Experiment…
Author(s): T. E. Lisle
Keywords: PSW4351, Caspar Creek, watershed, sediment, water quality, flood peaks, suspended sediment, bedload, road construction, logging effects, erosion
Source: Pages XIV 1-8, in: A Field Trip to Observe Natural and Management-related Erosion in Franciscan Terrane of Northern California, the Cordilleran Section of the Geological Society of America, 9-11 April 1979
Year: 1979
The Eel River draining the Coast Range of northwestern California has the highest recorded average suspended sediment yield per drainage area of any river of its size or larger unaffected by volcanic eruptions or active glaciers in the conterminous United States (1,720 t/km 2 yr from 9,390 km 2 ;…
Author(s): Thomas E. Lisle
Keywords: PSW4351, erosion, sediment transport, California, suspended sediment, sediment transporting porcess, hillslopes, channels, geology, hydrology, geomorphic
Source: In: M.G. Wolman and H.C. Riggs (ed.), Surface Water Hydrology, v. O-1, The Geology of North America, Geological Society of America. p. 311-314.
Year: 1990