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Filters Date Types (for Date Range) Extensions Shapefile (1) Types Downloadable (1) Map Service (1) OGC WFS Layer (1) OGC WMS Layer (1) Shapefile (1) Contacts U.S. Geological Survey David L Blodgett Jennifer C Underwood U.S. Geological Survey - ScienceBase Bethany Bradley More... Tag Types Theme (3) USGS Scientific Topic Keyword (2) Place (3) Harvest Set (2) Tag Schemes USGS (1) None (2) USGS Thesaurus (1) ISO 19115 Topic Category (2) Common geographic areas (1) View Results as: JSON ATOM CSV

Network Attributes for the Hi Res National Hydrography Dataset (NHD) based initial 3D Hydrography Program Network DISCLAIMER "These data are preliminary or 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 on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the data." See Full Metadata Here This dataset contains the initial 3D Hydrography Program (3DHP) flow network based on the final High Resolution National Hydrography Dataset (NHD) [data] [documentation] and a set of mainstem rivers [data] built on the Medium resolution NHDPlus Version 2 (NHDPlusV2). Two key pieces of... Categories: Data, Data Release - In Progress; Tags: Conterminous US, environment Data Release: Regional Moment Tensor Solutions The development and deployment of digital broadband seismographs provides the data required to rapidly assess earthquake size, determine source parameters and better characterize ground motions affecting earthquake hazard. The focus of regional moment tensor analysis is to estimate the moment magnitude, faulting parameters and source depth of earthquakes that are too small to be recorded teleseismically. Thus they have the potential of extending the earthquake catalog to magnitudes less than about M4-4.5. This data distribution provides the details required to critically review the resulting catalog, e.g., the waveforms used, processing parameters and velocity model. In addition the issue of the correct local... Categories: Data, Data Release - In Progress; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile Massachusetts River Herring Daily Counts and Environmental data The timing of biological events in plants and animals, such as migration and reproduction, is shifting due to climate change. Anadromous fishes are particularly susceptible to these shifts, as they are subject to strong seasonal cycles when transitioning between marine and freshwater habitats to spawn. We used linear models to determine the extent of phenological shifts in adult alewife (Alosa pseudoharengus) as they migrated from ocean to freshwater environments during spring to spawn at 12 sites along the northeast U.S. We also evaluated broad-scale oceanic and atmospheric drivers that trigger their movements from offshore to inland habitats including sea surface temperature (SST), North Atlantic Oscillation index,... Categories: Data, Data Release - In Progress; Tags: Phenology, climate change, fish, migration, migration Biogeochemical and microbial data from microcosm experiments using wetland sediment to investigate the influence of antibiotics and a nitrification inhibitor in agricultural run-off on N-cycling processes, 2019-2020. Wetlands are frequently used in the U.S. for treating nitrate in agricultural runoff. However, numerous other biologically active contaminants, such as antibiotics and nitrification inhibitors, regularly co-occur with nitrate and many can affect the efficiency of nitrate removal. This project evaluated the discrete and combined effects of specific veterinary and human antibiotics and a common nitrification inhibitor (nitrapyrin) on nitrate-N treatment efficiency in saturated sediments and floating treatment wetlands. Sediment and water samples were collected from 3 locations at the USDA Meat Animal Research Facility near Clay Center NE in August 2019 for assessment of background conditions in order to determine... Categories: Data, Data Release - In Progress; Tags: Ecology, Environmental Health, Geochemistry, Land Use Change, USGS Science Data Catalog (SDC), All tags... Water Quality, Water Resources, Fewer tags US non-native plant occurrence and abundance data and distribution maps for Eastern US species with current and future climate This is a dataset containing aggregated non-native plant occurrence and abundance data for the contiguous United States. We used these data to develop habitat suitability models for species found in the Eastern United States using locations with 5% cover or greater. We adapted the INHABIT modeling workflow (Young et al. 2020), using a consistent set of climatic predictors that were important in the INHABIT models. We developed models using five algorithms with VisTrails: Software for Assisted Habitat Modeling [SAHM 2.2.2]. We accounted for sampling bias by using the target background approach, and constructed model ensembles using the five models for each species for three different thresholds (conservative to targeted;1st... Categories: Data, Data Release - In Progress; Tags: Botany, Contiguous United States, Ecology, SAHM, Species Distribution Modeling, All tags... USGS Science Data Catalog (SDC), United States, VisTrails, biogeography, biogeography, biota, habitat suitability, invasive species, invasive species, modeling, modeling, Fewer tags