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This portion of the USGS data release presents sediment grain-size data from samples on the Elwha River delta, Washington, in February 2016 (USGS Field Activity Number 2016-608-FA). Surface sediment was collected at a total of 83 locations using a small ponar, or 'grab', sampler from the R/V Frontier in water depths between 1 and 17 m around the delta. An additional 18 samples were collected by hand at low tide. A handheld global satellite navigation system (GNSS) receiver was used to determine the locations of sediment samples. Grab samples that yielded less than 50 g of sediment were omitted from analysis and are classified as "no sample". The grain-size distributions of samples that yielded more than 50 g of...
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This portion of the USGS data release presents bathymetry data collected during surveys performed on the Elwha River delta, Washington in January 2015 (USGS Field Activity Number 2015-605-FA). Bathymetry data were collected using two personal watercraft (PWCs) and a kayak, all equipped with single-beam sonar systems and global navigation satellite system (GNSS) receivers. The PWC sonar systems consisted of an Odom Echotrac CV-100 single-beam echosounder and 200 kHz transducer with a 9° beam angle. Raw acoustic backscatter returns were digitized by the echosounder with a vertical resolution of 1.25 cm. Depths from the echosounders were computed using sound velocity profiles measured using a YSI CastAway CTD during...
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The Bureau of Ocean Energy Management (BOEM) researchers often require detailed information regarding emergent marsh vegetation types (i.e., fresh, intermediate, brackish, and saline) for modeling habitat capacities and mitigation. In response, the U.S. Geological Survey, in collaboration with the Bureau of Ocean Energy Management produced a detailed change classification of emergent marsh vegetation types in coastal Louisiana from 2007 and 2013. This study incorporates decision-tree analyses to classify emergent marsh vegetation types using two existing vegetation surveys and independent variables such as Landsat and high-resolution airborne imagery from 2007 and 2013, bare-earth digital elevation models based...
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This data release consists of statistical predictions of daily salinity time series generated from the makESTUSAL software repository described by Asquith and others (2023b). The statistical methods included multiple methods of machine learning, which produced the daily salinity prediction and attendant credible uncertainties included in the data release. The geographic scope includes the predictions for 91 locations within bays and estuaries of the Gulf of Mexico, United States. The 91 locations are organized across 15 salinity groups and represented in the organizational structure of this data release. The input data files of imputed salinity (observations, response variable) and covariates (predictor variables)...
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This USGS Data Release represents tabular data for chemical and physical attributes, rates of deposition, erosion, and mineralization of bank and floodplain sediments and soils from five study sites in the Smith Creek watershed between 2012 and 2015. The data release was produced in compliance with the new 'open data' requirements as a way to make the scientific products associated with USGS research efforts and publications available to the public. The dataset consists of 2 separate items: 1. Smith Creek floodplain soils dataset (tabular data) 2. Smith Creek bank soils dataset (tabular data) These data support the following publication: Gillespie, J.L., Noe, G.B., Hupp, C.R., Gellis, A.C., and Schenk, E.R.,...
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Nitrogen, phosphorus, and suspended-sediment loads, and changes in loads, in rivers across the Chesapeake Bay watershed have been calculated using monitoring data from the Chesapeake Bay Nontidal Network (NTN) stations for the period 1985 through 2016. Nutrient and suspended-sediment loads and changes in loads were determined by applying a weighted regression approach called WRTDS (Weighted Regression on Time, Discharge, and Season). The load results represent the total mass of nitrogen, phosphorus, and suspended sediment that was exported from each of the NTN watersheds.
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The Ankeny, Iowa wastewater treatment facility (WWTF) was decommissioned in November 2013 providing a unique opportunity to characterize the impacts of WWTF discharge on water quality at the surface-water/groundwater interface in a shallow, unconfined alluvial aquifer. The Ankeny WWTF discharged treated effluent for nearly forty years into Fourmile Creek, located in Ankeny, Iowa. Dataset includes site information (Table 1), analytical methods (Table 2), piezometer water level elevations (Table 3), trace and major element concentrations collected from 2011 to 2013 before the WWTF shutdown (Table 4), and trace and major element concentration collected from 2013 to 2014 after the WWTF shutdown (Table 5).
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Nitrogen, phosphorus, and suspended-sediment loads, and changes in loads, in rivers across the Chesapeake Bay watershed have been calculated using monitoring data from the Chesapeake Bay Nontidal Network (NTN) stations for the period 1985 through 2016. Nutrient and suspended-sediment loads and changes in loads were determined by applying a weighted regression approach called WRTDS (Weighted Regression on Time, Discharge, and Season). The load results represent the total mass of nitrogen, phosphorus, and suspended sediment that was exported from each of the NTN watersheds.
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This dataset is comprised of eight files related to salt marsh monitoring data or measures of of human disturbance (i.e. human impacts in terms of physical, chemical, and land-use stressors) collected at 33 marsh study units (MSUs) in five National Parks within the NPS Northeast Coastal and Barrier Network (NCBN) along the northeastern coast of the US. Two files contain data related to the species and coverage of salt marsh vegetation observed in MSUs (1 data file, 1 definitions file). Two files contain data related to the species and abundance of nekton collected from creeks, pools and ditches in MSUs (1 data file, 1 definitions file). Two files contain data related to the height of key salt marsh vegetation species...
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This dataset includes shorelines from 65 years ranging from 1947 to 2012 for the north coast of Alaska between Point Barrow and Icy Cape. Shorelines were compiled from topographic survey sheets and Nautical Charts (T-sheet, Nautical Chart; National Oceanic and Atmospheric Administration (NOAA)), aerial orthophotographs (U.S. Geological Survey (USGS), National Aeronautics and Space Administration (NASA), satellite imagery (State of Alaska), and lidar elevation data (USGS). Historical shoreline positions serve as easily understood features that can be used to describe the movement of beaches through time. These data are used to calculate rates of shoreline change for the U.S. Geological Survey's National Assessment...
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Digital flood-inundation maps for a 7.6-mile reach of the Meramec River at Fenton, Missouri, were created by the U.S. Geological Survey (USGS) in cooperation with the US Army Corps of Engineers, St. Louis Metropolitan Sewer District, Missouri Department of Transportation, Missouri American Water, and Federal Emergency Management Agency Region 7. The flood-inundation maps, which can be accessed through the USGS Flood Inundation Mapping Science Web site at http://water.usgs.gov/osw/flood_inundation/, depict estimates of the areal extent and depth of flooding corresponding to selected water levels (stages) at the USGS streamgage on the Meramec River at Fenton, Missouri (station number 07019210). Near-real-time stages...
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This is the seventh report produced by the U.S. Geological Survey (USGS) for the Wyoming Landscape Conservation Initiative (WLCI) to detail annual activities conducted by the USGS for addressing specific management needs identified by WLCI partners. In FY2014, there were 26 projects, including a new one that was completed, two others that were also completed, and several that entered new phases or directions. The 26 projects fall into several categories: (1) synthesizing and analyzing existing data to identify current conditions on the landscape and using the data to develop models for projecting past and future landscape conditions; (2) monitoring indicators of ecosystem conditions and the effectiveness of on-the-ground...
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Groundwater-quality data were collected from 559 wells as part of the National Water-Quality Assessment Project of the U.S. Geological Survey National Water-Quality Program from January through December 2014. The data were collected from four types of well networks: principal aquifer study networks, which assess the quality of groundwater used for public water supply; land-use study networks, which assess land-use effects on shallow groundwater quality; major aquifer study networks, which assess the quality of groundwater used for domestic supply; and enhanced trends networks, which evaluate the time scales during which groundwater quality changes. Groundwater samples were analyzed for a large number of water-quality...
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U.S. Geological Survey, in cooperation with Miami-Dade County, performed a sequential, aquifer stress test from August 15 to October 12, 2011, on the Floridan aquifer system at the North District Wastewater Treatment Plant, in Miami-Dade County, Florida. Miami-Dade County stressed the Floridan aquifer system with four municipal injection wells at the North District. Miami-Dade County, Miami-Dade Water and Sewer Department measured injection rate with a supervisory control and data acquisition system from August 10, 2011, to October 20, 2011, for Injection Wells IW-1, IW-3, and IW-4. These data are part of a larger data set that describe the stress test at the North District (King, 2016, http://dx.doi.org/10.5066/F7QZ2819).
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U.S. Geological Survey, in cooperation with Miami-Dade County, performed a sequential, aquifer stress test from August 15 to October 12, 2011, on the Floridan aquifer system at the North District Wastewater Treatment Plant, in Miami-Dade County, Florida. Miami-Dade County stressed the Floridan aquifer system with four municipal injection wells at the North District. The U.S. Geological Survey measured pressure with a Level TROLL 700 from August 15, 2011, to October 12, 2011, in well IW-4. These data are part of a larger data set that describe the stress test at the North District (King, 2016, http://dx.doi.org/10.5066/F7QZ2819).
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U.S. Geological Survey, in cooperation with Miami-Dade County, performed a sequential, aquifer stress test from August 15 to October 12, 2011, on the Floridan aquifer system at the North District Wastewater Treatment Plant, in Miami-Dade County, Florida. Miami-Dade County stressed the Floridan aquifer system with four municipal injection wells at the North District. The U.S. Geological Survey measured pressure with a Level TROLL 700 from August 15, 2011, to October 12, 2011, in well IW-3. These data are part of a larger data set that describe the stress test at the North District (King, 2016, http://dx.doi.org/10.5066/F7QZ2819).
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U.S. Geological Survey, in cooperation with Miami-Dade County, performed a sequential, aquifer stress test from August 15 to October 12, 2011, on the Floridan aquifer system at the North District Wastewater Treatment Plant, in Miami-Dade County, Florida. Miami-Dade County stressed the Floridan aquifer system with four municipal injection wells at the North District. The U.S. Geological Survey measured pressure with an Aqua TROLL 200 from August 15, 2011, to October 12, 2011, for the lower zone of Floridan aquifer system monitoring well FA-4. These data are part of a larger data set that describe the stress test at the North District (King, 2016, http://dx.doi.org/10.5066/F7QZ2819).
map background search result map search result map Tomography pressure time series from August 15, 2011, to October 12, 2011, for injection well IW-3 at the North District Wastewater Treatment Plant, Miami-Dade County, Florida Tomography pressure time series from August 15, 2011, to October 12, 2011, for injection well IW-4 at the North District Wastewater Treatment Plant, Miami-Dade County, Florida Injection rate time series from August 10, 2011, to October 20, 2011, for Injection Wells IW-1, IW-3, and IW-4 at the North District Wastewater Treatment Plant, Miami-Dade County, Florida U.S. Geological Survey Science for the Wyoming Landscape Conservation Initiative: 2014 annual report Navigation data for marine geophysical data collected between Shelter Cove and Fort Bragg (northern California) during field activity B-5-10-NC from 09/20/2010 to 10/01/2010 Navigation data for marine geophysical data collected collected between Fort Bragg and Point Arena (northern California) during field activity C-1-10-NC from 08/09/2010 to 08/15/2010 Tomography pressure time series (filtered) from August 15, 2011, to October 12, 2011, for the lower zone of Floridan aquifer system monitoring well FA-4 at the North District Wastewater Treatment Plant, Miami-Dade County, Florida Surface-sediment grain-size distributions from the Elwha River delta, Washington, February 2016 Concentrations and associated method information for trace and major elements in Fourmile Creek near Ankeny, Iowa, USA during the 2011-2014 wastewater treatment facility pre/post-closure assessment Datasets from Groundwater-Quality Data from the National Water-Quality Assessment Project, January through December 2014 and Select Quality-Control Data from May 2012 through December 2014 Floodplain sedimentation, bank erosion, and biogeochemical cycling of sediment and nutrients in Smith Creek (Virginia) 2012-2015: U.S. Geological Survey data release Nearshore bathymetry data from the Elwha River delta, Washington, January 2015 Development of a Multimetric Index (MMI) for Integrated Assessment of Salt Marsh Ecosystem Condition NCBN Vegetation & Nekton Data Delineation of marsh types and marsh type-change in Coastal Louisiana for 2007 and 2013 Shorelines of the Eastern Chukchi Sea, Alaska coastal region (Point Barrow to Icy Cape) used in shoreline change analysis Concentrations of chlorinated ethene compounds in rock core collected from boreholes 83BR, 84BR, 85BR, 86BR, 87BR, 88BR, and 89BR in the mudstone underlying the former Naval Air Warfare Center, West Trenton, New Jersey Shapefiles of the flood-inundation maps for the Meramec River at Fenton, Missouri, 2017 Chesapeake Bay Nontidal Network 1985-2016: Monthly loads Chesapeake Bay Nontidal Network 1985-2016: WRTDS output data Modeled daily salinity derived from multiple machine learning methodologies for 91 salinity monitoring sites in the northern Gulf of Mexico, 1980–2021 Concentrations of chlorinated ethene compounds in rock core collected from boreholes 83BR, 84BR, 85BR, 86BR, 87BR, 88BR, and 89BR in the mudstone underlying the former Naval Air Warfare Center, West Trenton, New Jersey Nearshore bathymetry data from the Elwha River delta, Washington, January 2015 Surface-sediment grain-size distributions from the Elwha River delta, Washington, February 2016 Tomography pressure time series from August 15, 2011, to October 12, 2011, for injection well IW-3 at the North District Wastewater Treatment Plant, Miami-Dade County, Florida Tomography pressure time series from August 15, 2011, to October 12, 2011, for injection well IW-4 at the North District Wastewater Treatment Plant, Miami-Dade County, Florida Injection rate time series from August 10, 2011, to October 20, 2011, for Injection Wells IW-1, IW-3, and IW-4 at the North District Wastewater Treatment Plant, Miami-Dade County, Florida Tomography pressure time series (filtered) from August 15, 2011, to October 12, 2011, for the lower zone of Floridan aquifer system monitoring well FA-4 at the North District Wastewater Treatment Plant, Miami-Dade County, Florida Shapefiles of the flood-inundation maps for the Meramec River at Fenton, Missouri, 2017 Concentrations and associated method information for trace and major elements in Fourmile Creek near Ankeny, Iowa, USA during the 2011-2014 wastewater treatment facility pre/post-closure assessment Floodplain sedimentation, bank erosion, and biogeochemical cycling of sediment and nutrients in Smith Creek (Virginia) 2012-2015: U.S. Geological Survey data release Shorelines of the Eastern Chukchi Sea, Alaska coastal region (Point Barrow to Icy Cape) used in shoreline change analysis Delineation of marsh types and marsh type-change in Coastal Louisiana for 2007 and 2013 Chesapeake Bay Nontidal Network 1985-2016: Monthly loads Chesapeake Bay Nontidal Network 1985-2016: WRTDS output data U.S. Geological Survey Science for the Wyoming Landscape Conservation Initiative: 2014 annual report Development of a Multimetric Index (MMI) for Integrated Assessment of Salt Marsh Ecosystem Condition NCBN Vegetation & Nekton Data Modeled daily salinity derived from multiple machine learning methodologies for 91 salinity monitoring sites in the northern Gulf of Mexico, 1980–2021 Datasets from Groundwater-Quality Data from the National Water-Quality Assessment Project, January through December 2014 and Select Quality-Control Data from May 2012 through December 2014