|
|
Sediment cores were collected in the Cache Creek Settling Basin (CCSB), Yolo County, California, during October 2011 at 10 locations (borehole sites) and during August 2012 at 5 other locations. Total core depths ranged from approximately 4.6 to 13.7 meters (15 to 45 feet), with penetration to about 9.1 meters (30 feet) at most locations. Detailed subsampling (3-centimeter intervals) was done at total of seven locations: six along an east-west transect in the southern part of the Cache Creek Settling Basin and at one in the northern part of the basin for analyses of total mercury; organic content; and cesium-137, which was used for dating. This data release reports results of the analyses of each subsample of these...
Categories: Data;
Tags: Cache Creek Settling Basin,
Sacramento River Watershed,
Sacramento–San Joaquin River Delta,
USGS Science Data Catalog (SDC),
Woodland, CA, All tags...
Yolo Bypass,
Yolo County,
basin,
cesium,
chemical analysis,
drilling and coring,
environment,
field sampling,
geochemistry,
isotopic analysis,
mercury,
mercury contamination,
none,
sediment geochemistry,
wetlands, Fewer tags
|
The Cache Creek Settling Basin (CCSB) is a 13.3 km2 leveed basin located at the terminal drainage of the Cache Creek watershed, immediately NE of the town of Woodland (Yolo County), California and approximately 18 km NW of Sacramento, California. The basin was constructed by the U.S. Army Corps of Engineers (completed in 1937 and modified in 1993) for the purpose of trapping suspended sediment transported from the upper Cache Creek watershed during high-flow events, thus preventing sediment from entering the Yolo Bypass, a larger downstream floodwater conveyance and agricultural zone. In addition to trapping suspended sediment, the CCSB also traps sediment-associated mercury (Hg), which is particularly elevated...
Categories: Data Release - Revised;
Tags: Cache Creek Settling Basin,
Sacramento River Watershed,
Sacramento–San Joaquin River Delta,
Total Maximum Daily Load (TMDL),
USGS Science Data Catalog (SDC), All tags...
Woodland, CA,
Yolo Bypass,
Yolo County,
aquatic ecosystems,
basins,
biogeochemistry,
floodplains,
mercury,
methylmercury,
watershed management,
wetlands, Fewer tags
|
|
