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California's State Water Resources Control Board (SWRCB) wishes to quantify how water and constituents introduced via the outflow from the Spring Creek Diversion Dam mix with water within Keswick Reservoir. Of primary interest is the degree of dilution that exists when this introduced flow reaches the main stem of Keswick Reservoir, and how this mixing is influenced by different operational parameters of the system. In addition to flows through the three relevant dams (Spring Creek Debris Dam, Keswick Dam, and Shasta Dam) that must be considered, there is additional flow entering the Spring Creek Arm of the Keswick Reservoir via two penstocks that carry water from Whiskeytown Lake - in a different watershed - to...
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Application of Delft3D-FM model to Keswick Reservoir in California, for short-term (days) simulations. Model archive includes source code (open-source, created by Deltares in the Netherlands), input files, and output files in netCDF format. Source code will need to be compiled for the operating system and hardware being used. Instructions are included with the source code. A separate data release (https://www.sciencebase.gov/catalog/item/62e16507d34e10763b599008) contains related field data that have been used as input for model calibration runs.
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Field observations of water and suspended-sediment fluxes at the Golden Gate were made over one ebb tide and one flood tide on three occasions: 1) 21-22 March 2016, following a large storm event that triggered the first flow into Yolo Bypass flood control structure since 2011; 2) 23 June of 2016, during a period of low freshwater inflow and 3) 27-28 February 2017, following several large storms of the wettest winter in northern California in recorded history. On each occasion, flux of water and suspended sediment were estimated using data from a boat-mounted acoustic Doppler current profiler. This instrument provided high-resolution velocity and acoustic backscatter (ABS) data at a cross-section (“transect”) near...
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Borehole erosion tests were performed to quantify sediment erosion rates as a function of depth below grade and flow speed at locations along the Sacramento and American Rivers in 2019. The dataset consists of: - borehole caliper files describing the initial geometry of the borehole, and its shape after each test flow event, - where available, a digital time series describing discharge into the hole - where available, a digital time series describing water level in the water supply tank - log sheets with details such as test location, date, and personnel - digital log sheets in .pdf format include field-based and laboratory-based soil classification data, see "Drilling log file explanation.txt" for explanation of...
Field observations of water and suspended-sediment fluxes were conducted at Benicia Bridge and Mallard Island during the 2019 water year wet season to capture suspended-sediment flux during elevated Sacramento–San Joaquin Delta discharge. Measurements occurred on two occasions: 1) 26th of February 2019 at Benicia Bridge and Mallard Island, following a storm event that increased delta outflow and 2) 10th April 2019 at Benicia Bridge, following peak delta outflow for the 2019 water year. On both occasions, flux of water and suspended sediment were estimated using data from a boat-mounted acoustic Doppler current profiler. This instrument provided high-resolution velocity and acoustic backscatter (ABS) data at a cross-section...
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A Gust erosion chamber was used to apply horizontal shear stress to sediment cores obtained at selected locations within the Yolo Bypass near Sacramento, California. The locations correspond to different land uses; two cores were taken at each site. The shear stress was increased in stepwise fashion, and turbidity of the effluent monitored. From this, two quantities are calculated: 1) critical shear stress required to initiate erosion, and 2) soil mass eroded per square meter at an applied shear stress of 0.4 Pa. So for each core we have a date, land use or site, core number, latitude, longitude, critical shear stress, and eroded mass at tau = 0.4 Pa.
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The acoustic Doppler current meter (ADCP) used in this study outputs binary data files containing measurement scheme, location, time, velocity, backscatter, boat heading, depth, and other parameters. These data are provided here in the manufacturer's "classic ASCII" format, as described in READMEforADCP.txt file associated with this data release. We also collected water samples for suspended-sediment concentration, with co-located ADCP backscatter data. These data are provided in a separate file indicating date, time, and location of these observations. Data were collected at three locations in Sacramento-San Joaquin River Delta in California: Lindsey Slough; Mokelumne River; and Old River.
    map background search result map search result map Gust Erosion Chamber Data, Yolo Bypass, CA (2015-16) ADCP Data in Support of Water and Suspended-Sediment Flux Measurements at the Golden Gate, 2016-2017 Sediment Concentration and Velocity Data to Assess Trapping by Submerged Vegetation Borehole Erosion Test data, Lower American and Sacramento Rivers, California, 2019 (ver. 4.0, July 2021) Acoustic doppler current profiler (ADCP) transect data at Benicia Bridge and Mallard Island, 2019 xsecModel.m: Matlab code to simulate equilibrium river cross-section Evaluation of Hydrodynamic Mixing in Keswick Reservoir, California, 2021-22 Model Archive Summary for Surrogate Turbidity Regression at USGS station 11455780 Suisun Bay at Benicia Bridge near Benicia CA (Upper Sensor), Water Years 2018, 2019, and 2020 Keswick Reservoir, California, Delft3D-FM Model Archive Model Archive Summary for Surrogate Turbidity Regression at USGS station 11455780 Suisun Bay at Benicia Bridge near Benicia CA (Upper Sensor), Water Years 2018, 2019, and 2020 Evaluation of Hydrodynamic Mixing in Keswick Reservoir, California, 2021-22 ADCP Data in Support of Water and Suspended-Sediment Flux Measurements at the Golden Gate, 2016-2017 Keswick Reservoir, California, Delft3D-FM Model Archive Acoustic doppler current profiler (ADCP) transect data at Benicia Bridge and Mallard Island, 2019 xsecModel.m: Matlab code to simulate equilibrium river cross-section Gust Erosion Chamber Data, Yolo Bypass, CA (2015-16) Sediment Concentration and Velocity Data to Assess Trapping by Submerged Vegetation Borehole Erosion Test data, Lower American and Sacramento Rivers, California, 2019 (ver. 4.0, July 2021)