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Scott W Anderson

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This data release summarizes suspended sediment monitoring results on the Bogachiel (USGS 12042800) and Calawah (USGS 12043000) Rivers between water years 2019 and 2021, based on a combination of continuous turbidity monitoring and discrete suspended-sediment concentration (SSC) measurements. Data and results for each monitoring station were combined into zip files. Each zip file contains: Summarized SSC measurements used in model calibration, a detailed model archive summary documenting the process used to estimate SSC at 15-minute intervals, and full 15-minute estimates of SSC and suspended loads between Oct. 1, 2018 and Sept 30, 2021. Metadata files within the zip files provide additional details on the file...
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Bulk subsurface gravel samples collected along the White River in the summer of 2018. Sample sites were at or near the apex of relatively fresh gravel surfaces, located in reaches with relatively uniform hydaulics. Data were collected by first removing the surface layer to the depth of approximately the 90th percentile particle diameter, after which 100-150 kg of subsurface material was collected. Samples were sieved at full-phi intervals down to 8 mm and weighed in the field. A split of about 1 kg of the <8 mm fines was collected and further sieved and weighed in the lab.
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This data release summarizes suspended sediment monitoring results on the Chehalis (USGS 12031000), Satsop (USGS 12035000) and Wynoochee (USGS 12037400) Rivers between water years 2019 and 2022. Sediment monitoring was based on a combination of continuous turbidity records and discrete suspended-sediment concentration (SSC) measurements. Data and results for each monitoring station were combined into zip files. Each zip file contains 1) summarized SSC measurements used in model calibration, 2) a detailed model archive summary documenting the process used to estimate SSC at 15-minute intervals, and 3) full 15-minute estimates of SSC and suspended loads between Oct. 1, 2018 and Sept 30, 2022. Metadata files within...
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The USGS streamflow gaging network that was active in water year 2020 was analyzed for its coverage, resolution, and representation of geospatial variables indicating public interests. The priority areas to maintain or add gages for each variable were determined by applying standardized criteria to cumulative distributions of the variable for incremental gaged areas (IGAs) and for 12-digit hydrologic unit codes (HUC12) in the United States. Priorities are identified for two spatial scales: the United States and 4-digit hydrologic unit codes.
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Supporting Data for Sediment Studies in the White River Watershed
The White River is a dynamic gravel-bedded system in western Washington, with headwaters on Mount Rainier. Chronic aggradation in the lower river has reduced flood conveyance to a point where modest discharges are increasingly causing substantial flood damage. In order to better understand the dynamics governing this aggradation, and how aggradation rates may be influenced by forecasted changes in climate, the USGS conducted a broad study looking at the watershed-scale delivery and routing of coarse sediment (sand and gravel). Those results have been published in a GSA Bulletin journal article (https://doi.org/10.1130/B35530.1). This data release consists of supporting data used in that product, and includes Grain...
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