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Data on denitrification and ecological characteristics of nontidal floodplains, Chesapeake Bay watershed, USA, 2013-2016 This data set presents attributes of floodplain ecosystem characteristics including floodplain soil denitrification, floodplain soil biogeochemistry, floodplain vegetation, floodplain sedimentation, floodplain and channel morphometry, stream discharge and water quality, floodplain climate, floodplain physiographic region, and catchment land cover. Attributes are associated with 18 floodplains of the Chesapeake Bay watershed. For many of these attributes, mean values are summaries of multiple measurements made within each floodplain site. Categories: Data; Tags: Maryland, Pennsylvania, USGS Science Data Catalog (SDC), Virginia, West Virginia, All tags... air temperature, alluvial soil, biogeochemistry, climate, denitrification, floodplains, land cover, nitrogen, riparian soil, rivers, season, sediment deposition, soil, streams, Fewer tags Data Release: Buttonland Swamp, SET data This study examined long-term changes in ground height using Surface Elevation Tables (SETs). Measurements were taken in the floodplains of the Cache River at Buttonland Swamp in southern Illinois. The sites where data was collected included Crawford Tract and Eagle Pond from 2020-2022 and Deer Pond and Snake Hole from 2005-2022. Categories: Data; Tags: Buttonland Swamp, Cache River, Ecology, Forested Wetland, Illinois, All tags... Land Use Change, Southern Illinois, USGS Science Data Catalog (SDC), United States, channel downcutting, climate change, elevation, freshwater ecosystems, freshwater swamp, global warming, precipitation (atmospheric), precipitation measurements, sediment deposition, sedimentation, swamp, wetlands, Fewer tags Suspended sediment concentration data in the Elwha River, Washington, September 2011 to September 2016 This data release provides 15-minute data of suspended-sediment concentration and fine (less than 0.0625 mm) suspended-sediment concentration during the removal of 2 large dams on the Elwha River from September 2011 to September 2016. Data are derived from regression relations with turbidity at the USGS gaging station Elwha River at the Diversion (no.12046260). Categories: Data; Tags: CMPG, Clallam County, Coastal and Marine Geology Program, Elwha Dam (historical), Elwha River, All tags... Glines Canyon Dam (historical), Olympic National Park, PCMSC, Pacific Coastal and Marine Science Center, State of Washington, Substrate, U.S. Bureau of Reclamation, U.S. Geological Survey, USBR, USGS, field inventory and monitoring, inlandWaters, river bank, river channel, sediment deposition, sediment transport, stream discharge, Fewer tags Streamgage measurements, Elwha River, Washington, 2011 to 2016 Streamgage levels on the Elwha River were measured from 2011 to 2016. These measurements show the height of the river's water surface, both in meters relative to the stream bed, as well as in meters relative to vertical geographic coordinates. Measurements were collected using a Global Water WL16 battery-operated vented water level logger in a hardened casing. The instrument was installed on October 17, 2011 on the left bank of the Elwha River at a power line crossing above the Elwha Surface Water Intake (at approximately river kilometer 5.6), which is downstream of the (now historical) Elwha Dam site. Data collection ended May 12, 2016. The data were collected as part of a study investigating responses of the Elwha... Categories: Data; Tags: CMGP, Coastal and Marine Geology Program, Elwha River, Elwha River Dam (historical), Glines Canyon Dam (historical), All tags... Lake Aldwell (historical), Lake Mills (historical), Olympic National Park, PCMSC, Pacific Coastal and Marine Science Center, State of Washington, Substrate, U.S. Bureau of Reclamation, U.S. Geological Survey, USBR, USGS, field inventory and monitoring, inlandWaters, river bank, river channel, river reaches, river systems, sediment deposition, stream-gage measurement, time series datasets, Fewer tags Orthomosaic images of the middle and lower Elwha River, Washington, 2012 to 2017 This dataset presents 28 georeferenced orthomosaic images of the middle and lower reaches of the Elwha River. Each mosaic image was created by stitching together thousands of individual photographs that were matched based on numerous unique tie points shared by the photographs. The individual photographs were taken by a plane-mounted camera during multiple flights over the study area spanning 2012 to 2017. Because each mosaic is orthogonal to the earth's surface and is georeferenced to real-world coordinates, changes to the river channel and surrounding morphology can be seen and measured, including channel width, river braiding, bar formation, and other metrics to assess responses of the river to the removal of... Tags: CMGP, Coastal and Marine Geology Program, Elwha Dam (historical), Elwha River, Glines Canyon Dam (historical), All tags... Lake Aldwell (historical), Lake Mills (historical), NPS, National Park Service, Olympic National Park, PCMSC, Pacific Coastal and Marine Science Center, State of Washington, Substrate, U.S. Bureau of Reclamation, U.S. Geological Survey, USBR, USGS, aerial photography, digital elevation models, field inventory and monitoring, image collections, image mosaics, inlandWaters, lidar, remote sensing, river bank, river channel, river reaches, river systems, sediment deposition, time series datasets, topographic maps, Fewer tags Digital elevation models (DEMs) of the lower Elwha River, Washington, water year 2013 to 2016 Digital elevation models (DEMs) of the lower Elwha River, Washington, were created by synthesizing lidar and PlaneCam Structure-from-Motion (SfM) data. Lidar and still digital photographs were collected by airplane during surveys from 2012 to 2016. The digital photographs were used to create a SfM digital surface model. Each DEM represents the ending conditions for that water year (for example, the 2013 DEM represents conditions at approximately September 30, 2013). The final DEMs, presented here, were created from the most recent lidar before September 30 of a given year, supplemented with an error-corrected SfM model from a low-flow summer Elwha PlaneCam flight as close to 30 September as possible. This synthetic... Tags: CMGP, Coastal and Marine Geology Program, Elwha Dam (historical), Elwha River, Glines Canyon Dam (historical), All tags... NPS, National Park Service, PCMSC, Pacific Coastal and Marine Science Center, State of Washington, Substrate, U.S. Bureau of Reclamation, U.S. Geological Survey, USBR, USGS, digital elevation models, field inventory and monitoring, image collections, image mosaics, inlandWaters, lidar, river bank, river channel, river reaches, river systems, sediment deposition, time series datasets, topographic maps, Fewer tags Transgressive Contours--Punta Gorda to Point Arena, California This part of DS 781 presents data for the transgressive contours of the Punta Gorda to Point Arena, California, region. The vector data file is included in the "TransgressiveContours_PuntaGordaToPointArena.zip," which is accessible from https://doi.org/10.5066/P9PNNI9H. As part of the USGS's California State Waters Mapping Project, a 50-m grid of sediment thickness for the seafloor within the 3-nautical mile limit between Punta Gorda and Point Arena was generated from seismic-reflection data collected between 2010 and 2012, and supplemented with geologic structure (fault) information following the methodology of Wong (2012). Water depths determined from bathymetry data were added to the sediment thickness data to... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Delgada Canyon, Distributions, Fort Bragg, All tags... Mendocino, Noyo Canyon, PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, Physical Habitats and Geomorphology, Point Arena, Point Delgada, Punta Gorda, Shelter Cove, Spanish Canyon, State of California, U.S. Geological Survey, USGS, environment, geoscientificInformation, geospatial datasets, maps and atlases, marine geology, oceans, sediment deposition, seismic reflection methods, seismic reflection profiling, stratigraphic thickness, Fewer tags Transgressive Contours--Point Conception to Hueneme Canyon, California This part of DS 781 presents data for the transgressive contours for the Point Conception to Hueneme Canyon, California, region. The vector file is included in "TransgressiveContours_PointConceptionToHuenemeCanyon.zip," which is accessible from http://dx.doi.org/10.5066/F7891424. As part of the USGS's California State Waters Mapping Project, a 50-m grid of sediment thickness for the seafloor within the 3-nautical mile limit between Point Conception and Hueneme Canyon was generated from seismic-reflection data collected in 2014 (USGS activity 2014-632-FA) supplemented with outcrop and geologic structure (fault) information following the methodology of Wong (2012). Water depths determined from bathymetry data were... Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Carpinteria, Coal Oil Point, Gaviota, Hueneme Canyon, Pacific Ocean, All tags... Point Conception, Refugio Beach, Santa Barbara, Santa Barbara Channel, Santa Barbara County, State of California, Ventura, coastal geology, environment, geoscientificInformation, geospatial datasets, maps and atlases, marine geology, oceans, sediment deposition, sediment thickness, stratigraphic thickness, Fewer tags Isopachs--Point Conception to Hueneme Canyon, California This part of DS 781 presents data for the isopachs for the Point Conception to Hueneme Canyon, California, region. The vector data file is included in "Isopachs_PointConceptionToHuenemeCanyon.zip," which is accessible from https://doi.org/10.5066/F7891424. As part of the USGS's California State Waters Mapping Project, a 50-m grid of sediment thickness for the seafloor within the 3-nautical mile limit between Point Conception and Hueneme Canyon was generated from seismic-reflection data collected in 2014 (USGS activity 2014-632-FA) supplemented with outcrop and geologic structure (fault) information following the methodology of Wong (2012). This sediment thickness layer was merged with a previously published sediment... Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Carpinteria, Coal Oil Point, Gaviota, Hueneme Canyon, Pacific Ocean, All tags... Point Conception, Refugio Beach, Santa Barbara, Santa Barbara Channel, Santa Barbara County, State of California, Ventura, coastal geology, environment, geoscientificInformation, geospatial datasets, maps and atlases, marine geology, oceans, sediment deposition, sediment isopach, sediment thickness, stratigraphic thickness, Fewer tags Grain size data from the Carmel River, central California, 2013 to 2021 (ver. 2.0, March 2022) This data release supersedes version 1, published in 2017 under https://doi.org/10.5066/F74M93HF. Please see Version_History_P9HG8UDS.txt below for more information. Pebble-count data were collected during summer surveys (2013, 2015, 2016, 2017, 2018, 2019, 2020, and 2021) at ten sites along the Carmel River, California. Grain-size measurements were made at four to six transects per site using a 0.5 by 0.5 m sampling frame, with approximately 100 sediment-particle counts per transect. Each transect was defined by coordinates on the left and right sides of the river, and sediment grain sizes were measured at five equally spaced locations within the bankfull channel on the transect defined by those endpoint coordinates... Categories: Data; Tags: CMHRP, Carmel River, Carmel Valley, Coastal and Marine Hazards and Resources Program, Monterey County, All tags... PCMSC, Pacific Coastal and Marine Science Center, San Clemente Dam, Substrate, U.S. Geological Survey, USGS, field inventory and monitoring, grain-size analysis, gravel deposits, inland fishery resources, inlandWaters, river bank, river channel, river reaches, river systems, sediment deposition, sieve-size analysis, Fewer tags Isopachs—Point Sur to Point Arguello, California This part of DS 781 presents data for the isopachs of the Point Sur to Point Arguello, California, region. The vector data file is included in the “Isopachs_PointSurToPointArguello.zip,” which is accessible from https://doi.org/10.5066/P97CZ0T7. As part of the USGS's California State Waters Mapping Project, a 50-m grid of sediment thickness for the seafloor within the 3-nautical mile limit between Point Sur and Point Arguello was generated from seismic-reflection data collected between 2008 and 2014, and supplemented with geologic structure (fault and fold) information following the methodology of Wong (2012). Reference Cited: Wong, F. L., Phillips, E.L., Johnson, S.Y., and Sliter, R.W., 2012, Modeling of depth... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Avila Beach, CMHRP, Cambria, Coastal and Marine Hazards and Resources Program, Distributions, All tags... Gamboa Point, Gorda, Lafler Rock, Morro Bay, PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, Physical Habitats and Geomorphology, Piedras Blancas, Point Arguello, Point Buchon, Point Estero, Point Purisma, Point Sal, Point Sur, Ragged Point, State of California, U.S. Geological Survey, USGS, environment, geoscientificInformation, geospatial datasets, maps and atlases, marine geology, oceano Beach, oceans, sediment deposition, sediment isopach, sediment thickness, seismic reflection methods, seismic reflection profiling, stratigraphic thickness, Fewer tags Radiocarbon measurements, census counts of benthic foraminifera, diatoms, and palynomorphs, and geochemistry from core 721-1 obtained in 2002 off San Francisquito Creek in South San Francisco Bay The urbanized area of downtown Menlo Park is subject to persistent flooding and sediment deposition by San Francisquito Creek in South San Francisco Bay. To mitigate these events, a suite of cores was collected in 2002 at the mouth of the creek to determine sediment depositional rates on the delta. One of those cores (721-1) was selected for microbiological (pollen, diatoms, and foraminifera) and geochemical analyses to reconstruct a depositional record over the past two millennia. This data release provides radiocarbon dates, census counts of benthic foraminifera, diatoms, and palynomorphs, and the measurement of anthropogenic metals and other elements in sediments from this core. Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Habitat, Hooks Point, Invertebrates, All tags... PCMSC, Pacific Coastal and Marine Science Center, San Francisco Bay, San Francisquito Creek, Substrate, U.S. Geological Survey (USGS), USGS, animals, bay, benthic foraminifera, biota, carbon-14 analysis, chemical analysis, diatoms, environment, foraminifera, geochemistry, geoscientificInformation, gravity coring, marine chemistry, mass spectroscopy, mercury analysis, none, organisms, palynology, protists, radiometric dating, sediment deposition, sediment geochemistry, sediment-pollutant interaction, society, Fewer tags Transgressive Contours—Point Sur to Point Arguello, California This part of DS 781 presents data for the transgressive contours of the Point Sur to Point Arguello, California, region. The vector data file is included in the “TransgressiveContours_PointSurToPointArguello.zip,” which is accessible from https://doi.org/10.5066/P97CZ0T7. As part of the USGS's California State Waters Mapping Project, a 50-m grid of sediment thickness for the seafloor within the 3-nautical mile limit between Point Sur and Point Arguello was generated from seismic-reflection data collected between 2008 and 2014, and supplemented with geologic structure (fault and fold) information following the methodology of Wong (2012). Water depths determined from bathymetry data were added to the sediment thickness... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Avila Beach, CMHRP, Cambria, Coastal and Marine Hazards and Resources Program, Distributions, All tags... Gamboa Point, Gorda, Lafler Rock, Morro Bay, PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, Physical Habitats and Geomorphology, Piedras Blancas, Point Arguello, Point Buchon, Point Estero, Point Purisma, Point Sal, Point Sur, Ragged Point, State of California, U.S. Geological Survey, USGS, environment, geoscientificInformation, geospatial datasets, maps and atlases, marine geology, oceano Beach, oceans, sediment deposition, seismic reflection methods, seismic reflection profiling, stratigraphic thickness, Fewer tags Sediment Thickness--Punta Gorda to Point Arena, California This part of DS 781 presents data for the sediment-thickness map of the Punta Gorda to Point Arena, California, region. The raster data file is included in the "SedimentThickness_PuntaGordaToPointArena.zip," which is accessible from https://doi.org/10.5066/P9PNNI9H. As part of the USGS's California State Waters Mapping Project, a 50-m grid of sediment thickness for the seafloor within the 3-nautical mile limit between Point Sur and Point Arguello was generated from seismic-reflection data collected between 2010 and 2012, and supplemented with geologic structure (fault) information following the methodology of Wong (2012). Reference Cited: Wong, F. L., Phillips, E.L., Johnson, S.Y., and Sliter, R.W., 2012, Modeling... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: CMHRP, Coastal/Marine Hazards and Resources Program, Delgada Canyon, Distributions, Fort Bragg, All tags... Mendocino, Noyo Canyon, PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, Physical Habitats and Geomorphology, Point Arena, Point Delgada, Punta Gorda, Shelter Cove, Spanish Canyon, State of California, U.S. Geological Survey, USGS, environment, geoscientificInformation, geospatial datasets, maps and atlases, marine geology, oceans, sediment deposition, seismic reflection methods, seismic reflection profiling, stratigraphic thickness, Fewer tags Daily sediment loads during and after dam removal in the Elwha River, Washington, 2011 to 2016 Daily values of discharge and sediment loads were measured and estimated at U.S. Geological Survey gaging station 12046260, on the Elwha River at the diversion near Port Angeles, Washington. Daily data are reported from September 15, 2011 to September 30, 2016. Specific data include (1) date; (2) discharge; (3) suspended-sediment concentration and one standard-deviation bounds; (4) percentage of fine-grained particles (silts and clays) in suspension; (5) loads of total suspended-sediment, fine-grained particles in suspension, and sand in suspension; (6) gauged bedload for particles between 2-16 mm and greater than 16 mm; and (7) estimated bedload for particles smaller than 2 mm. Categories: Data; Tags: CMGP, Coastal and Marine Geology, Elwha Dam (historical), Elwha River, Glines Canyon Dam (historical), All tags... Lake Aldwell (historical), Lake Mills (historical), Olympic National Park, PCMSC, Pacific Coastal and Marine Science Center, State of Washington, Substrate, U.S. Bureau of Reclamation, U.S. Geological Survey, USBR, USGS, field inventory and monitoring, inlandWaters, river bank, river channel, sediment deposition, sediment transport, stream discharge, Fewer tags 210Pb and 137Cs measurements from core 721-1 obtained in 2002 off San Francisquito Creek in South San Francisco Bay This data release provides 210Pb and 137Cs measurements in sediments of a core obtained off San Francisquito Creek in South San Francisco Bay. Categories: Data; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Hooks Point, PCMSC, Pacific Coastal and Marine Science Center, All tags... San Francisco Bay, San Francisquito Creek, Substrate, U.S. Geological Survey, USGS, bay, chemical analysis, environment, geochemistry, geoscientificInformation, gravity coring, marine chemistry, radiometric dating, sediment deposition, sediment geochemistry, society, Fewer tags Predictions of floodplain and streambank geomorphic change and flux of sediment and nutrients, and streambed characteristics, for stream reaches in the Chesapeake Bay and Delaware River watersheds Input predictor variables and output predictions from statistical modeling of floodplains, streambanks, and streambeds for each NHDPlusV2 stream reach in the Chesapeake Bay and Delaware River watersheds of the U.S. Mid-Atlantic. Random Forest statistical models using either 1) characteristics of upstream drainage area, or 2) characteristics of upstream drainage area (Wieczorek et al. 2018, https://doi.org/10.5066/f7765d7v) and reach geomorphometry (Hopkins et al. 2020, https://doi.org/10.5066/P9RQJPT1), were used to explain and predict spatial variation in measured floodplain and streambank flux of sediment, fine sediment, sediment-C, sediment-N, and sediment-P and rates of geomorphic change, and streambed sediment... Categories: Data; Tags: Chesapeake Bay, Delaware, District of Columbia, Ecology, Geochemistry, All tags... Geomorphology, Hydrology, Maryland, New Jersey, New York, Pennsylvania, Remote Sensing, Soil Sciences, USGS Science Data Catalog (SDC), Virginia, Water Quality, West Virginia, banks (hydrographic), channels, drainage basins, floodplains, sediment, sediment deposition, sediment erosion, sediment geochemistry, sediment sinks, sediment sources, Fewer tags Microfossil, grain size, and petrographic data for the Cabin Branch and Cabin Creek (Cappy Avenue) outcrops, Prince George's County, Maryland The Cabin Branch and Cabin Creek (Cappy Avenue) outcrops are located along two small creeks in Prince George’s County, Maryland. The Cabin Branch outcrop contains exposures of silty sands of the Upper Cretaceous Severn Formation, and both outcrops contain Paleocene silty quartz and glauconitic sands of the Danian Brightseat Formation and highly fossiliferous glauconitic quartz sands of the Selandian Aquia Formation. Data from these two locations were generated in order to designate a Principal Reference Section for the Danian age Brightseat Formation. The Cabin Branch outcrop consists of disjunct exposures along an approximately 0.4-mile section of the creek. At the nearby Cabin Creek (Cappy Avenue) outcrop a more... Categories: Data; Tags: Aquia Formation, Brightseat Formation, Cenozoic, Cretaceous, Danian, All tags... Maastrichtian, Maryland, Mesozoic, Mid-Atlantic Coastal Plain, Paleocene, Paleogene, Prince George's, Salisbury Embayment, Sedimentology, Selandian, Severn Formation, Stratigraphy, Tertiary, Thanetian, USGS Science Data Catalog (SDC), biostratigraphy, biota, calcareous nannoplankton, coastal zones, continental margins, faunal and floral census (microscopic), foraminiferans, fossils, geoscientificInformation, lithostratigraphy, micropaleontology, ostracodes, petrography, protists, sediment, sediment analysis, sediment deposition, sedimentology, stratigraphic sections, stratigraphic thickness, Fewer tags Elevations of the Elwha and Mills dams, Elwha River, Washington, 2008 to 2013 This dataset presents elevation measurements of two dams on the Elwha River, Washington, during their removal processes from 2008 to 2013. Elevation measurements of the Elwha Dam were taken from October 2008 to March 2012. Elevation measurements of the Glines Canyon dam, which was further upstream than the Elwha Dam, were taken from October 2010 to October 2013. The measurements were taken by the U.S. Bureau of Reclamation as part of a study investigating the river channel's morphological responses to dam removal. Categories: Data; Tags: CMGP, Coastal and Marine Geology Program, Elwha Dam (historical), Elwha River, Glines Canyon Dam (historical), All tags... Lake Aldwell (historical), Lake Mills (historical), PCMSC, Pacific Coastal and Marine Science Center, State of Washington, Substrate, U.S. Bureau of Reclamation, U.S. Geological Survey, USBR, USGS, field inventory and monitoring, inlandWaters, river bank, river channel, river reaches, river systems, sediment deposition, time series datasets, Fewer tags Isopachs--Punta Gorda to Point Arena, California This part of DS 781 presents data for the isopachs of the Punta Gorda to Point Arena, California, region. The vector data file is included in the "Isopachs_PuntaGordaToPointArena.zip," which is accessible from https://doi.org/10.5066/P9PNNI9H. As part of the USGS's California State Waters Mapping Project, a 50-m grid of sediment thickness for the seafloor within the 3-nautical mile limit between Punta Gorda and Point Arena was generated from seismic-reflection data collected between 2010 and 2012, and supplemented with geologic structure (fault) information following the methodology of Wong (2012). Reference Cited: Wong, F. L., Phillips, E.L., Johnson, S.Y., and Sliter, R.W., 2012, Modeling of depth to base of Last... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Delgada Canyon, Distributions, Fort Bragg, All tags... Mendocino, Noyo Canyon, PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, Physical Habitats and Geomorphology, Point Arena, Point Delgada, Punta Gorda, Shelter Cove, Spanish Canyon, State of California, U.S. Geological Survey, USGS, environment, geoscientificInformation, geospatial datasets, maps and atlases, marine geology, oceans, sediment deposition, sediment isopach, sediment thickness, seismic reflection methods, seismic reflection profiling, stratigraphic thickness, Fewer tags 1 2 »