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Filters Date Range Past year (22) Past month (7) Past week (0) Past day (0) Custom range... To   Search Extensions Raster (1) Shapefile (1) Types Map Service (4) Downloadable (3) OGC WFS Layer (3) OGC WMS Layer (3) OGC WMS Service (2) More... Contacts U.S. Geological Survey - ScienceBase U.S. Geological Survey Water Resources Maryland-Delaware-D.C. Water Science Center Gregory E Schwarz More... Categories Data Release - Revised (2) Tag Types Theme (26) Place (26) USGS Scientific Topic Keyword (10) Harvest Set (13) Label (2) Tag Schemes None (22) ISO 19115 Topic Category (18) USGS Thesaurus (5) Geographic Names Information System (GNIS) (1) Common geographic areas (6) Geographic Names Information System (1) USGS Metadata Identifier (1) View Results as: JSON ATOM CSV

Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: Crop Land Data Layer 2014 This tabular data set represents the percent of land cover classes from the 2014 Crop land Data Layer compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network. This dataset can be linked to the NHDPlus version 2 data suite by the unique identifier COMID. The source data is the "2014 Crop Land Data Layer" produced by the United States Department of Agriculture (USDA) National Agricultural Statistics Service (NASS, 2015). Reach catchment information characterizes data at the local scale. Reach catchments accumulated upstream through the river network characterizes... Categories: Data; Types: Citation; Tags: CDL, Catchment, Conterminous United States, Crop Land Data Layer, CropScape, All tags... Inlandwaters, NAWQA, NHDPlus, SPARROW, agriculture, crop cover, crop estimates, cropland, land cover, Fewer tags Data-Driven Drought Prediction Project Model Inputs for Upper and Lower Colorado Portions of the National Hydrologic Geo-Spatial Fabric version 1.1 and Select U.S. Geological Survey Streamgage Basins: Daily Climate Metrics Derived from GridMET, 1980 - 2020 These tabular data sets represent daily climate metrics processed from 4 kilometer GridMET data (Abatzoglou, 2013) for the period of record 1980 through 2020 and compiled for three spatial components: select United States Geological Survey stream gage basins (Staub and Wieczorek, 2023), 2) individual reach flowline catchments of the Upper and Lower Colorado (ucol) portions of the Geospatial Fabric for the National Hydrologic Model, version 1.1 (nhgfv11, Bock and others, 2020 ), and 3) the upstream watersheds of each individual nhgfv11 flowline catchments. Flowline reach catchment information characterizes data at the local scale using the python tool set called gdptools (McDonald, 2021). Reach catchments accumulated... Categories: Data; Tags: CONUS, Conterminous United States, Coterminous United States, Geospatial Fabric, GridMET, All tags... Hydrologic Modeling, Inlandwaters, Upper Colorado River, catchments, climatologyMeteorologyAtmosphere, potential evapotranspiration, precipitation, reference evapotranspiration, standardized precipitation evapotranspiration index, temperature (Celsius), Fewer tags Data-Driven Drought Prediction Project Model Inputs for Upper and Lower Colorado Portion of the National Hydrologic Geo-Spatial Fabric version 1.1 and Select U.S. Geological Survey Streamgage Basins: Daily Climate Metrics Derived from NLDAS2, 1980 - 2020 These tabular data sets represent the average daily soil moisture water content (kg/m^2) for four different soil layers processed from North American Land Data Assimilation System (NLDAS-2) data (Xia and others, 2012) for the period of record 1980 through 2020 and compiled for three spatial components: 1) select United States Geological Survey stream gage basins (Staub and Wieczorek, 2023), 2) individual reach flowline catchments of the Upper Colorado (ucol) portion of the Geospatial Fabric for the National Hydrologic Model, version 1.1 (nhgfv11, Bock and others, 2020 ), and 3) the upstream watersheds of each individual nhgfv11 flowline catchments. Flowline reach catchment information characterizes data at the local... Categories: Data; Tags: CONUS, Conterminous United States, Coterminous United States, Geospatial Fabric, Hydrologic Modeling, All tags... Inlandwaters, NLDAS2, Upper Colorado River, catchments, elevation, soil layers, soil moisture, soil moisture water content, temperature (Celsius), water content, Fewer tags Summary of basin characteristics for National Hydrography Dataset, version 2 catchments in the southeastern United States, 1950 - 2010 This dataset provides numerical and categorical descriptions of 48 basin characteristics for 956 basins with observed streamflow information and 9,314 ungaged basins coinciding with 12-digit hydrologic unit code (HUC12) pour points that drain to the Gulf of Mexico. Characteristics are indexed by National Hydrography Dataset (NHD) version 2 COMID (integer that uniquely identifies each feature in the NHD) and U.S. Geological Survey (USGS) station number for streamflow-gaging station, where applicable. The variables represent mutable and immutable basin characteristics and are organized by characteristic type: physical (5), hydrologic (6), categorical (12), climate (6), landscape alteration (7), and land cover (12).... Categories: Data, Data Release - Revised; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Shapefile; Tags: Alabama, Arkansas, Basin characteristics, Florida, Georgia, All tags... Gulf Coast, Gulf Coast, Louisiana, Mississippi, RESTORE, Tennessee, Texas, USGS Science Data Catalog (SDC), United States, categorical, network optimization, reference hydrology, streamflow processes, Fewer tags Data Layers for the National Hydrologic Model, version 1.1 This U.S. Geological Survey (USGS) metadata release consists of 17 different spatial layers in GeoTIFF format. They are: 1) average water capacity (AWC.zip), 2) percent sand (Sand.zip), 3) percent silt (Silt.zip), 4) percent clay (Clay.zip), 5) soil texture (TEXT_PRMS.zip), 6) land use/land cover (LULC.zip), 7) snow values (Snow.zip), 8) summer rain values (SRain.zip), 9) winter rain values (WRain.zip), 10) leaf presence values (keep.zip), 11) leaf loss values (loss.zip), 12) percent tree canopy (CNPY.zip), 13) percent impervious surface (Imperv.zip), 14) snow depletion curve numbers (Snow.zip), 15) rooting depth (RootDepth.zip), 16) permeability values (Lithology_exp_Konly_Project.zip), and 17) water bodies. All... Categories: Data; Tags: Canada, average water capacity, boundaries, conterminous United States of America, geographic information systems (GIS), All tags... geoscientificInformation, hydrologic modeling, hydrologic response Units (HRUs), inLandWaters, interception, land cover, leaf loss, leaf presence, percent clay, percent sand, percent silt, Fewer tags National Hydrologic Model's United States-Canada Transboundary Geospatial Fabric Parameter Database This metadata record documents a set of 118 comma delimited files and a data dictionary describing the inputs for the U.S. Geological Survey Precipitation Runoff Modeling System (PRMS) which is used to drive the National Hydrologic Model (NHM) for the United States-Canada transboundary domain. The National Hydrologic Model database contains parameters for hydrologic response units (HRUs) and stream segments needed to run the NHM. These parameters are generated using python scripts to process input datasets such as digital elevation models, soil maps, and land cover classifications. Many of the parameters were left at their default model value as they would need to be calibrated as part of the PRMS model development... Categories: Data; Tags: Canada, National Hydrologic Model, United States, environment, farming, All tags... health, hydrologic parameters, inlandWaters, watershed modeling, Fewer tags Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds: 30 year (1981 - 2010) annual average duration of consecutive dry and wet days for the Conterminous United States and District of Columbia This tabular data describes the annual average duration of consecutive wet and dry events during the 30-year period 1981 – 2010 for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network. A wet event is defined as a period when the number of consecutive days with precipitation equals or exceeds 1 millimeter. A dry event is defined as a period when the number of consecutive days with precipitation equals 0 millimeters. This dataset can be linked to the NHDPlus version 2 data suite by the unique identifier COMID. The source data for 30 year (1981-2010) annual average... Categories: Data; Tags: DAYMET, NHDPlus version 2.1, consecutive dry days, consecutive wet days, conterminous United States, All tags... conterminous United States, duration of events, inlandWaters, precipitation, Fewer tags Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds: 30 year (1981 - 2010) average of annual maximum duration of consecutive dry and wet days per event for the Conterminous United States and District of Columbia This tabular data describes the average of annual maximum duration of consecutive dry and wet days per event, where precipitation totals are 0 or equal and exceeds 1 millimeters respectively, during the 30-year period 1981 – 2010 for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network. A wet event is defined as a period when the number of consecutive days with precipitation equals or exceeds 1 millimeter. A dry event is defined as a period when the number of consecutive days with precipitation equals 0 millimeters. This dataset can be linked to the NHDPlus version... Categories: Data; Tags: DAYMET, NHDPlus version 2.1, consecutive dry days, consecutive wet days, conterminous United States, All tags... conterminous United States, inlandWaters, maximum duration, precipitation, Fewer tags Geospatial Fabric for National Hydrologic Modeling, version 1.1 This U.S. Geological Survey (USGS) data release consists of two hydrographic datasets with spatial modeling units, two sets of spatial data consistent with the National Hydrologic Model (NHM) Geospatial Fabric for National Hydrologic Modeling (abbreviated within this document as GFv1, Viger and Bock, 2014), and a database of 118 parameters used to run the NHM . These datasets are found as subpages to this landing page as 1) the GIS (geographic information system) features of the United States-Canada Transboundary Geospatial Fabric (TGF, added 08/04/2020), 2) the GIS features of the Geospatial Fabric v1.1 (GFv1.1 or v1_1, added 08/04/2020) which is an update to the GF and includes the TGF, 3) Topographic derivative... Categories: Data, Data Release - Revised; Tags: Canada, Geographic Information Systems, Hydrologic Response Units, Hydrologic modeling, Points of Interest, All tags... Routing Network, USGS Science Data Catalog (SDC), United States, geoscientificInformation, inlandWaters, Fewer tags GIS Features of the Geospatial Fabric for the National Hydrologic Model, version 1.1 The Geospatial Fabric version 1.1 (GFv1.1 or v1_1) is a dataset of spatial modeling units covering the conterminous United States (CONUS) and most major river basins that flow in from Canada. The GFv1.1 is an update to the original Geospatial Fabric (GFv1, Viger and Bock, 2014) for the National Hydrologic Modeling (NHM). Analogous to the GFv1, the GFv1.1 described here includes the following vector feature classes: points of interest (POIs_v1_1), a stream network (nsegment_v1_1), and hydrologic response units (nhru_v1_1), with several additional ancillary tables. These data are contained within the Environmental Systems Research Institute (ESRI) geodatabase format (GFv1.1.gdb). Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Canada, Geographic Information Systems, Hydrologic Response Units, Hydrologic modeling, Points of Interest, All tags... Routing Network, United States, geoscientificInformation, inlandWaters, Fewer tags Attributes for NHDPlus version 2.1 catchments and modified routing of upstream watersheds for the conterminous United States: 2012 Percent farm land in conservation program. This metadata record describes a computed ratio of county acres of farmland reported in agricultural conservation programs to the total acres of farmland reported for the county. Acres in conservation programs are for the 2012 time period, and reported by survey from the U.S. Department of Agriculture, Farm Field Survey. Acres of total farmland were used from the U.S. Department of Agriculture, 2012 Census of Agriculture. The ratio is intended to provide an indication of the intensity of agricultural management practices. Categories: Data; Tags: Agriculture, CONUS, CRP, Conservation, County, All tags... United States, biota, Fewer tags Streamflow input datasets and model results using the Weighted Regressions on Time, Discharge, and Season (WRTDS) Models to estimate total organic carbon and other constituent concentrations in eight rivers in Connecticut, water years 1973 to 2019 This data release provides data in support of an assessment of changes in slope of the concentration-discharge relation for total organic carbon in eight major rivers at gaging stations in Connecticut from October 1972 to September 2019 (U.S. Geological Survey water years 1973 to 2019). The rivers include the Connecticut at Thompsonville (01184000), Housatonic at Stevenson (01205500), Quinebaug at Jewett City (01127000), Farmington at Tariffville (01189995), Shetucket at Willamantic (01122500), Naugatuck at Beacon Falls (011208500), Quinnipiac at Wallingford (01196500), and Salmon at East Hampton (01193500). The assessment is described in the article “An increase in the slope of the concentration discharge relation... Categories: Data; Tags: Beacon Falls, CT, Connecticut River, East Hampton, CT, Farmington River, Housatonic River, All tags... Hydrology, Jewett City, CT, Land Use Change, Naugatuck River, Quinebaug River, Quinnipiac River, Salmon River, Shetucket River, South Windham, CT, Stevenson, CT, Tariffville, CT, Thompsonville, CT, USGS Science Data Catalog (SDC), Wallingford, CT, Water Quality, Willimantic, CT, dissolved organic compounds, mathematical modeling, river discharge monitoring, streamflow modeling, Fewer tags Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Riparian National Land Cover Data for 2019 Versions for the Years 2001, 2004, 2006, 2008, 2011, 2013, 2016, and 2019 This tabular data set represents the percent of land cover classes in the riparian zone from the 2019 edition of the National Land Cover databases for the years 2001, 2004, 2006, 2008, 2011, 2013, 2016 and 2019 compiled for two spatial components of the NHDPlus version 2.1 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network. These databases can be linked to the NHDPlus version 2 data suite by the unique identifier COMID. The source data is the "National Land Cover Database (NLCD) 2019 Products (ver. 2.0, June 2021)" databases for the years 2001, 2004, 2006, 2008, 2011, 2013, 2016, and 2019 produced by the... Categories: Data; Tags: Aquatic Biology, Catchment, Conterminous United States, Ecology, Geography, All tags... Hydrology, Inlandwaters, Land Use Change, NAWQA, NHDPlus, NLCD2001, NLCD2004, NLCD2006, NLCD2008, NLCD2011, NLCD2013, NLCD2016, NLCD2019, National Land Cover Data set, SPARROW, USGS Science Data Catalog (SDC), Water Quality, Water Resources, Wildlife Biology, inlandWaters, land cover, land use, riparian area, Fewer tags Data-Driven Drought Prediction Project Model Inputs for Upper and Lower Colorado Portions of the National Hydrologic Geo-Spatial Fabric version 1.1 and Select U.S. Geological Survey Streamgage Basins: Daily Snow Water Equivalent, 1981 - 2020 These tabular data sets represent daily climate metrics processed from 4 kilometer snow water equivalent (SWE) raster data in millimeters (Broxton and others, 2019) for the period of record 10-01-1981 through 09-30-2020 and compiled for three spatial components: select United States Geological Survey stream gage basins (Staub and Wieczorek, 2023), 2) individual reach flowline catchments of the Upper and Lower Colorado (ucol) portions of the Geospatial Fabric for the National Hydrologic Model, version 1.1 (nhgfv11, Bock and others, 2020 ), and 3) the upstream watersheds of each individual nhgfv11 flowline catchments. Flowline reach catchment information characterizes data at the local scale using the python tool... Categories: Data; Tags: CONUS, Conterminous United States, Coterminous United States, Geospatial Fabric, Hydrologic Modeling, All tags... Inlandwaters, Lower Colorado River, Upper Colorado River, catchments, climatologyMeteorologyAtmosphere, snow water equivalent, temperature (Celsius), Fewer tags Attributes for NHDPlus version 2.1 catchments and modified routing of upstream watersheds for the conterminous United States: Combination of landuse and geology. This tabular data represents the area of combined landuse and surficial materials for the conterminous United States linked to the NHDPlus version 2 data suite by the unique identifier COMID. The source data are the National Land Cover Dataset (NLCD) representing 2011 ground conditions (Homer, 2013) , and the "Map database for surficial materials in the conterminous United States" produced by the United States Geological Survey (USGS Soller and others, 2009). Surficial materials are defined as an unconsolidated blanket of sediments in which soils commonly are developed. These sediments generally were eroded from underlying rock, and then were transported and deposited (USGS Soller and others, 2009). Reach catchment... Categories: Data; Tags: CONUS, Geology, National, United States, biota, All tags... land use, sediment, surficial material, Fewer tags U.S. Streamflow Drought During the Last Century: annual drought and low flow metrics, annual climate, and trends for the periods 1921-, 1951- and 1981-2020 This dataset contains annual flow metrics quantifying drought and low streamflows for USGS GAGES-2 gages in the contiguous U.S. satisfying data completeness checks for the periods 1921-2020, 1951-2020, and 1981-2020. The dataset also contains annual climate variables from the USGS Monthly Water Balance Model (MWBM). The dataset provides trend analysis outputs for annual drought and low flow metrics for the periods 1921-2020, 1951-2020, and 1981-2020. Finally, we include six R language code files that were used to create the values included in this release as summarized in the process step section. Categories: Data; Tags: NCCWSC, USGS Science Data Catalog (SDC), USGS:618460d9d34ec04fc9c00082, United States, biota, All tags... droughts, streamflow, surface water (non-marine), water supply and demand, watershed management, Fewer tags Environmental Data in Relation to the Occurrence and Toxicity of Pseudo nitzschia in Frenchman Bay, Maine, 2010 to 2021 This dataset includes CSV data files containing environmental data that may be associated with the occurrence and toxicity of the diatom Pseudo nitzschia in Frenchman Bay, Maine, that can form harmful algal blooms and produce the toxin domoic acid. The dataset covers the period 2010 through 2022 or shorter period depending on the variable. Elevated concentrations of domoic acid in Pseudo nitzschia can lead to the contamination of shellfish, threats to human health and closures of shellfish harvesting areas. This dataset was compiled in cooperation with the National Park Service. The file “Site_Infomation_v4.csv” contains the latitudes and longitudes for the locations where Pseudo nitzschia cells were enumerated,... Categories: Data; Tags: Acadia, Aquatic Biology, Bar Harbor, Environmental Health, Hydrology, All tags... USGS Science Data Catalog (SDC), USGS-CC Harmful Algal Blooms and Harmful Algal Toxins, biota, marine water quality, Fewer tags Clusters of monthly streamflow values with similar temporal patterns at 555 HCDN (Hydro-Climatic Data Network) sites for the period 1981 to 2019 This data release identifies 555 Hydro-Climatic Data Network (HCDN) streamgages in the conterminous United States during the period 1981-2019 which were grouped according to similarity in their temporal patterns of monthly streamflow. Categories: Data; Tags: Climatology, GAGES-II, Hydro-Climatic Data Network, Hydrology, USGS Science Data Catalog (SDC), All tags... United States, cluster analysis, inland waters, streamflow, streamflow patterns, streamgages, Fewer tags 30 Year (1990 - 2019) Annual Average Difference between Precipitation Potential Evapotranspiration This metadata record describes the 30 year (1990-2019) annual average difference between precipitation potential evapotranspiration in millimeters in geotiff format. The source data is based on the ClimGrid netcdf data for precipitation and temperature (Wieczorek and others, 2022). Units are millimeters. Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Climatology, Conterminous United States, Geography, Hydrology, USGS Science Data Catalog (SDC), All tags... climate, climgrid, mean annual precipitation, potential evapotranspiration, precipitation, tif, Fewer tags Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds: 30 year (1981 - 2010) annual average of daily intensity of precipitation for a rain event for the Conterminous United States and District of Columbia This tabular data describes the annual average of daily intensity of precipitation for a rain event during the 30-year period 1981 – 2010 for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network. A rain event is defined as a period when the number of consecutive days with precipitation equals or exceeds 1 millimeter. Daily precipitation intensity is defined as the amount of precipitation over the duration of a rain event divided by the number of days in a rain event. This dataset can be linked to the NHDPlus version 2 data suite by the unique identifier COMID.... Categories: Data; Tags: DAYMET, NHDPlus version 2.1, conterminous United States, conterminous United States, inlandWaters, All tags... intensity of rain events, precipitation, Fewer tags 1 2 »