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Chemical and Stable Isotope Data for Discrete Water Samples Collected in the Northern Sacramento-San Joaquin Delta, 2011-2012 This data set consists of chemical and stable isotope data obtained through the analysis of discrete water samples collected from 14 fixed sampling locations in the northern Sacramento-San Joaquin Delta at roughly monthly intervals between April 2011 and November 2012. Categories: Data; Tags: Cache Slough, Lindsey Slough, Miner Slough, Prospect Slough, Sacramento River, All tags... Sacramento San Joaquin Delta, Steamboat Slough, Toe Drain, USGS Science Data Catalog (SDC), biogeochemical cycling, datasets, light stable isotope analysis, nutrient content (water), water quality, Fewer tags High-speed mapping of water isotopes and residence time in Cache Slough Complex, San Francisco Bay Delta, CA Real-time, high frequency (1-second sample interval) GPS location, water quality, and water isotope (δ2H, δ18O) data was collected in the Cache Slough Complex (CSC), located in the northern San Francisco Bay Delta (SFBD). Data was collected on 10/01/2014 for an approximate 4-hour period (10:30 – 14:30 h PST) while underway on the R/V Mary Landsteiner, a 26-foot USGS vessel. Sample water was pumped continuously through a pickup tube, passed through a 178 micron pre-filter, a de-bubbler, and diverted through a 0.2 micron filter and an unfiltered flow path to water quality instrumentation. The real-time data were recorded using a Campbell Scientific CR-6 data logger. Water isotopes (δ2H, δ18O) were logged to a separate... Categories: Data; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Aquatic Biology, Cache Slough, Ecology, Geochemistry, Hydrogeology, All tags... Liberty Cut, Liberty Island, Lindsey Slough, Little Holland Tract, Prospect Slough, Sacramento River, Sacramento-San Joaquin Delta, Shag Slough, Toe Drain, USGS Science Data Catalog (SDC), algae, chlorophyll a, hydrodynamics, isotopes, nitrate nitrogen, nitrogen, real-time data, surface water quality, Fewer tags Radioisotopes, percent organic carbon, percent inorganic sediment, and bulk density for peat and sediment cores collected in the Sacramento-San Joaquin Delta, California This data release contains data from cores collected in marshes and in sediments under invasive Brazilian waterweed (Egeria densa Planchon) in the Sacramento-San Joaquin Delta of California during the spring of 2018. Data are provided in two text files in comma separated columns. The first Core_Sites_Details.txt contains core site location, collection dates, and naming information. The second file, Core_Section_Analyses.txt contains % organic carbon, % inorganic sediment, bulk density data for each 2-cm section of six peat cores collected in marshes and six sediment cores collected under patches of Brazilian waterweed. Additionally, the second file contains the radioisotope values (137Cs and 210Pb) for each of the... Categories: Data; Tags: California, Lindsey Slough, Middle River, Mokelumne River, Sacramento-San Joaquin Delta, All tags... Sedimentology, Soil Sciences, USGS Science Data Catalog (SDC), biota, bulk density, environment, invasive aquatic vegetation, organic carbon, peat, radioisotope, sediment, Fewer tags