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Assessing spatial variability of nutrients and related water quality constituents in the California Sacramento-San Joaquin Delta: 2015-2022 High resolution mapping surveys in the North Delta-Suisun Habitat Arc This data release documents the spatial and temporal variability of nutrients and related water quality parameters at high spatial resolution in the Sacramento-San Joaquin River Delta of California, USA. The data set includes nitrate, ammonium, phosphate, dissolved organic carbon, temperature, conductivity, dissolved oxygen, turbidity, and chlorophyll. Data-collection were conducted over fourteen days between April 2015 - October 2022 with support from multiple cooperators. NOTE: Files marked as preliminary are provisional and are subject to revision. They are being provided to meet the need for timely best science. The data have not received final approval by the U.S. Geological Survey (USGS) and are provided... Categories: Data, Data Release - In Progress; Tags: Cache Slough, California, Central Valley, Lower Sacramento, Sacramento River, All tags... Sacramento-San Joaquin Delta, San Francisco Bay, United States, Yolo Bypass, biogeochemistry, biota, delta, discrete sampling, drinking water use, environment, high-resolution, hydrogeology, inlandWaters, nutrient content (water), nutrients, phytoplankton, public supply water use, real-time, statistical analysis, visualization methods, water quality, Fewer tags Distributed lakebed temperature data, Haskell Lake, Lac du Flambeau Reservation, Wisconsin, July 27 - Aug 1, 2016 This data release consists of lakebed temperature data collected at the sediment-water interface at the north end of Haskell Lake, Lac du Flambeau Reservation, Wisconsin. Data were collected using a fiber-optic distributed temperature sensor (DTS) during a 5 day period from July 27 to August 1, 2016. Established procedures were followed to estimate lakebed temperatures from the raw DTS data and calibration baths of known temperatures. This data release includes the raw DTS (Stokes and anti-Stokes intensity) data, a shape file of the DTS cable location, photos from the field deployment, and python code for reproducing the full workflow described as part of U.S. Geological Survey Scientific Investigations Report 2020-5005.... Categories: Data Release - In Progress; Tags: DTS, Distributed Temperature Sensing, Groundwater, Haskell Lake, Jupyter Notebook, All tags... Lac du Flambeau, Squirrel River, Surface water (non-marine), Vilas County, Wisconsin, environment, environmental assessment, fiber optic, geophysics, geoscientificInformation, groundwater and surface-water interaction, heat as a groundwater tracer, hydrogeology, hydrology, inlandWaters, northern lakes, python, seepage, temperature, tribal lands, water temperature, Fewer tags Altitudes and thicknesses of hydrogeologic units of southwestern Louisiana A hydrogeologic framework was constructed for the Coastal Lowlands aquifer system in southwestern Louisiana. Data from previous hydrogeologic and geologic studies were synthesized and expanded using 2,242 geophysical logs to map four hydrogeologic units: the Chicot aquifer system, Evangeline aquifer, Jasper aquifer system, and Catahoula aquifer. Raster surfaces were created for the base and thickness of each unit to provide a generalized framework to support regional groundwater studies. A table of the well information and point data used to generate the raster surfaces is included in this data release. Categories: Data, Data Release - In Progress; Tags: Catahoula aquifer, Chicot aquifer system, Evangeline aquifer, Gulf of Mexico, Jasper aquifer system, All tags... Louisiana, Louisiana Coastal, United States, geoscientificInformation, groundwater, hydrogeology, hydrology, water resources, Fewer tags