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Cumulative thermal units and developmental stage of Pallid Sturgeon free embryos reared at multiple temperatures Cumulative thermal units and developmental stage of Pallid Sturgeon free embryos reared at multiple temperatures
This dataset documents the onset of developmental stages of pallid sturgeon free embryos from hatch through melanin plug expulsion, when reared in the laboratory at five nominal temperatures (14, 17, 20, 23, and 26 degrees Celsius, degrees C). Onset of developmental stages were recorded in days post-hatch (DPH) and cumulative thermal units (CTU). CTU are calculated as the sum of water...
Seafloor Elevation and Volume Change Analyses from 2016 to 2019 Along the Florida Reef Tract, USA Seafloor Elevation and Volume Change Analyses from 2016 to 2019 Along the Florida Reef Tract, USA
The U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center conducted research to quantify bathymetric changes along the Florida Reef Tract (FRT) from Miami to Key West within a 939.4 square-kilometer area. USGS staff calculated changes in seafloor elevation and volume from 2016 to 2019 using light detection and ranging (lidar)-derived digital elevation models...
Nutrients and Major-Ions Measured in Water-Quality Samples Collected from Four North Texas Reservoirs (ver. 2.0, September 2020) Nutrients and Major-Ions Measured in Water-Quality Samples Collected from Four North Texas Reservoirs (ver. 2.0, September 2020)
In cooperation with Dallas Water Utilities (DWU), the U.S. Geological Survey (USGS) measures nutrient and major-ion concentrations in selected reservoirs in north Texas. This data release documents the results from water-quality samples collected from Ray Hubbard Lake, Grapevine Lake, Ray Roberts Lake, and Lake Lewisville during 2016 -18. The study began in water year 2016 (WY16) with...
Historical streamflow and stage data for the lower Columbia River basin and the coasts of Washington, Oregon, and northern California Historical streamflow and stage data for the lower Columbia River basin and the coasts of Washington, Oregon, and northern California
The U.S. Geological Survey (USGS) compiled data from a variety of national and state agencies to create a comprehensive dataset of streamflow and stage for the lower Columbia River basin and the coasts of Washington, Oregon, and northern California. Seasonal maximum values were calculated for streamflow and stage for the winter (November-March) and spring (April-July) flow seasons, as...
Bathymetric and supporting data for various water supply lakes in northwestern Missouri, 2019 and 2020 Bathymetric and supporting data for various water supply lakes in northwestern Missouri, 2019 and 2020
Water supply lakes are the primary source of water for many communities in northern and western Missouri. Therefore, accurate and up-to-date estimates of lake capacity are important for managing and predicting adequate water supply. Many of the water supply lakes in Missouri were previously surveyed by the U.S. Geological Survey in the early 2000s (Richards, 2013) and in 2013 (Huizinga...
Hydrogeologic Framework of the Big Lost River Basin, South-Central Idaho: Hydrogeologic Framework Model and Well Data Hydrogeologic Framework of the Big Lost River Basin, South-Central Idaho: Hydrogeologic Framework Model and Well Data
Groundwater in the Big Lost River Basin is vital to irrigated agriculture in the basin and water users are concerned about declining groundwater levels. The U.S. Geological Survey, in cooperation with the Idaho Department of Water Resources, developed a hydrogeologic framework to provide a conceptual understanding of groundwater resources in the Big Lost River Basin. A three-dimensional