Skip to main content
Advanced Search

Filters: Tags: St. Croix (X) > Types: Map Service (X)

20 results (31ms)   

View Results as: JSON ATOM CSV
thumbnail
The U.S. Geological Survey (USGS) collected hydroacoustic data of the St. Croix River adjacent to the Osceola (WI) boat ramp for hydrographic and benthic mapping prior to the reconstruction project implemented by the National Park Service (NPS). Backscatter is the acoustic reflectivity, which is the measure of energy obtained from the echo intensity, and can provide an indication about the nature of the river bottom and its physical character. Image analysis and classification of backscatter, with the combined datasets of bathymetry (and its derivatives) and ground truthing, can predict surficial substrate, or sediment type. For habitat analysis, these datasets were desired by the NPS to help inform and mitigate...
thumbnail
The Protected natural areas of the U.S. Virgin Islands, compiled and identified by the U.S. Virgin Islands Gap Analysis Project (USVIGAP), display terrestrial protected natural areas designated for natural resource conservation in the U.S. Virgin Islands, as well as areas with government regulation that have the potential to protect natural resources. The protection of natural areas is an essential step in conserving biodiversity and maintaining ecosystem services. The benefits and services provided by natural areas include clean water and air, sustainable wildlife populations and habitats, stable slopes and productive soils, genetic reservoirs, recreational opportunities and spiritual refugia. These benefits are...
thumbnail
The U.S. Geological Survey (USGS) collected hydroacoustic data of the St. Croix River adjacent to the Osceola (WI) boat ramp for hydrographic and benthic mapping prior to the reconstruction project implemented by the National Park Service (NPS). High-resolution bathymetry data was surveyed using a multibeam sonar. The depth and characteristics of the riverbed are important parameters of habitat for benthic (bottom-dwelling) organisms, and are a fundamental parameter for riverine ecosystems. A terrestrial lidar unit was used to collect shoreline elevation points. These datasets were highly desired by the NPS to help inform and mitigate potential impacts to mussels or benthic habitat.
thumbnail
The U.S. Virgin Islands 2007 land cover, created as part of the USVIGAP analysis project supported by the USGS, is a forty-nine class land cover classification. The USVIGAP land cover is based primarily on the unsupervised classification of five Earth Observing 1 (EO-1) Advanced Land Imager (ALI) scenes acquired in 2007. The ALI scenes were processed, segmented into geoclimatic zones and classified individually. ASTER and Landsat 7 ETM+ imagery from 2008 and 2009 were used to complete areas of no data resulting from cloud and cloud shadow in the initial ALI classification. The land cover was created through the use of the spectral information derived from the satellite imagery and ancillary data such as geology,...
thumbnail
The U.S. Geological Survey (USGS) collected hydroacoustic data of the St. Croix River adjacent to the Osceola (WI) boat ramp for hydrographic and benthic mapping prior to the reconstruction project implemented by the National Park Service (NPS). High-resolution bathymetry data was surveyed using a multibeam sonar. The depth and characteristics of the riverbed are important parameters of habitat for benthic (bottom-dwelling) organisms, and are a fundamental parameter for riverine ecosystems. These datasets were desired by the NPS to help inform and mitigate potential impacts to mussels or benthic habitat.
thumbnail
This part of the data release presents projected flooding extent polygon (flood masks) and flooding depth points (flood points) shapefiles based on wave-driven total water levels for the Territory of the U.S. Virgin Islands (the islands of Saint Croix, Saint John, and Saint Thomas). For each island there are 8 associated flood mask and flood depth shapefiles: one for each four nearshore wave energy return periods (rp; 10-, 50-, 100-, and 500-years) and both with (wrf) and without (worf) the presence of coral reefs. Flooding depth point data are also presented as a comma-separated value (.csv) text file.
thumbnail
The U.S. Geological Survey (USGS) collected hydroacoustic data of the St. Croix River adjacent to the Osceola (WI) boat ramp for hydrographic and benthic mapping prior to the reconstruction project implemented by the National Park Service (NPS). High-resolution bathymetry data was surveyed using a multibeam sonar. The depth and characteristics of the riverbed are important parameters of habitat for benthic (bottom-dwelling) organisms, and are a fundamental parameter for riverine ecosystems. Contours are an outline or boundary of specified depth intervals. These datasets were desired by the NPS to help inform and mitigate potential impacts to mussels or benthic habitat.
thumbnail
The U.S. Geological Survey (USGS) collected hydroacoustic data of the St. Croix River adjacent to the Osceola (WI) boat ramp for hydrographic and benthic mapping prior to the reconstruction project implemented by the National Park Service (NPS). High-resolution bathymetry data was surveyed using a multibeam sonar. The depth and characteristics of the riverbed are important parameters of habitat for benthic (bottom-dwelling) organisms, and are a fundamental parameter for riverine ecosystems. A terrestrial lidar unit was used to collect shoreline elevation points. These datasets were desired by the NPS to help inform and mitigate potential impacts to mussels or benthic habitat.
thumbnail
The U.S. Geological Survey (USGS) collected hydroacoustic data of the St. Croix River adjacent to the Osceola (WI) boat ramp for hydrographic and benthic mapping prior to the reconstruction project implemented by the National Park Service (NPS). High-resolution bathymetry data was surveyed using a multibeam sonar. The depth and characteristics of the riverbed are important parameters of habitat for benthic (bottom-dwelling) organisms, and are a fundamental parameter for riverine ecosystems. Contours are an outline or boundary of specified depth intervals. These datasets were desired by the NPS to help inform and mitigate potential impacts to mussels or benthic habitat.
thumbnail
The U.S. Geological Survey (USGS) collected hydroacoustic data of the St. Croix River adjacent to the Osceola (WI) boat ramp for hydrographic and benthic mapping prior to the reconstruction project implemented by the National Park Service (NPS). The dataset is a collection of still-shot images to be used as ground-truth data for geologic substrate. The still-images (jpeg format) were captured from underwater video using an Aqua-Vu system. For statistical analysis, the videos were sampled at random point locations. A short video captured the surficial geologic sediment type at each location. This collection of images directly corresponds with the geospatial shapefile containing sample location coordinates, a general...
thumbnail
Time series data of wave height and water surface elevation were acquired for 109 days at four locations off of the north coast and four locations off the south coast of Buck Island, U.S. Virgin Islands, in support of a study on the coastal circulation patterns and the transformation of surface waves over the coral reefs. The relative placement of sensors on the reefs were as follows: BUI16S1T and BUI16N1T – fore reef BUI16S2T and BUI16N2T – outer reef flat BUI16S3T and BUI16N3T – middle reef flat BUI16S4T and BUI16N4T – inner reef flat
thumbnail
The U.S. Geological Survey (USGS) collected hydroacoustic data of the St. Croix River adjacent to the Osceola (WI) boat ramp for hydrographic and benthic mapping prior to the reconstruction project implemented by the National Park Service (NPS). This dataset contains predicted geologic substrate information that was interpreted from combined sonar datasets. The shapefile contains a general description of interpreted surficial bottom type with its associated class code in the attribute table. Benthic substrate maps provide important physical characteristics that can be used in habitat modeling to guide management planning of restoration and conservation efforts.
thumbnail
Time series data of wave height and water surface elevation were acquired for 147 days at four locations off of the north coast and four locations off the south coast of Buck Island, U.S. Virgin Islands, in support of a study on the coastal circulation patterns and the transformation of surface waves over the coral reefs. The relative placement of sensors on the reefs were as follows: BUI15S1T and BUI15N1T – fore reef BUI15S2T and BUI15N2T – outer reef flat BUI15S3T and BUI15N3T – middle reef flat BUI15S4T and BUI15N4T – inner reef flat
thumbnail
The U.S. Geological Survey (USGS) collected hydroacoustic data of the St. Croix River adjacent to the Osceola (WI) boat ramp for hydrographic and benthic mapping prior to the reconstruction project implemented by the National Park Service (NPS). High-resolution bathymetry data was surveyed using a multibeam sonar. The depth and characteristics of the riverbed are important parameters of habitat for benthic (bottom-dwelling) organisms, and are a fundamental parameter for riverine ecosystems. These datasets were desired by the NPS to help inform and mitigate potential impacts to mussels or benthic habitat.
thumbnail
The U.S. Geological Survey (USGS) collected hydroacoustic data of the St. Croix River adjacent to the Osceola (WI) boat ramp for hydrographic and benthic mapping prior to the reconstruction project implemented by the National Park Service (NPS). This dataset contains reference locations that were obtained while collecting ground-truth information for geologic substrate. For statistical analysis, the locations were selected using random point sampling. The shapefile contains sample location coordinates, a general description of interpreted surficial sediment type, and an indication of mussel presence/absence in the attribute table. These geospatial locations directly correspond to the "still-images" dataset.
thumbnail
The U.S. Geological Survey (USGS) collected hydroacoustic data of the St. Croix River adjacent to the Osceola (WI) boat ramp for hydrographic and benthic mapping prior to the reconstruction project implemented by the National Park Service (NPS). High-resolution bathymetry data was surveyed using a multibeam sonar. The depth and characteristics of the riverbed are important parameters of habitat for benthic (bottom-dwelling) organisms, and are a fundamental parameter for riverine ecosystems. These datasets were desired by the NPS to help inform and mitigate potential impacts to mussels or benthic habitat.
thumbnail
The U.S. Geological Survey (USGS) collected hydroacoustic data of the St. Croix River adjacent to the Osceola (WI) boat ramp for hydrographic and benthic mapping prior to the reconstruction project implemented by the National Park Service (NPS). Acoustic Doppler Current Profiler (ADCP) measures river flow and discharge applications on inland environments. These datasets were desired by the NPS to help inform and mitigate potential impacts to mussels or benthic habitat.
thumbnail
The U.S. Geological Survey (USGS) collected hydroacoustic data of the St. Croix River adjacent to the Osceola (WI) boat ramp for hydrographic and benthic mapping prior to the reconstruction project implemented by the National Park Service (NPS). Sidescan image mosaics are often used in benthic mapping because it provides a picture of the physical bed characteristics. Sidescan sonar collects data over a relatively large area based on differences in acoustic reflectance signature. These datasets were desired by the NPS to help inform and mitigate potential impacts to mussels or benthic habitat.
thumbnail
The U.S. Geological Survey (USGS) collected hydroacoustic data of the St. Croix River adjacent to the Osceola (WI) boat ramp for hydrographic and benthic mapping prior to the reconstruction project implemented by the National Park Service (NPS). High-resolution bathymetry data was surveyed using a multibeam sonar. The depth and characteristics of the riverbed are important parameters of habitat for benthic (bottom-dwelling) organisms, and are a fundamental parameter for riverine ecosystems. These datasets were desired by the NPS to help inform and mitigate potential impacts to mussels or benthic habitat.
thumbnail
The U.S. Geological Survey (USGS) collected hydroacoustic data of the St. Croix River adjacent to the Osceola (WI) boat ramp for hydrographic and benthic mapping prior to the reconstruction project implemented by the National Park Service (NPS). High-resolution bathymetry data was surveyed using a multibeam sonar. The depth and characteristics of the riverbed are important parameters of habitat for benthic (bottom-dwelling) organisms, and are a fundamental parameter for riverine ecosystems. Fluvial geomorphology is the study of forming and shaping landforms caused by the action of water. These landforms can be classified to macro and meso habitat classes, to better understand habitat associations. These datasets...


    map background search result map search result map U.S. Virgin Islands 2007 GAP Land Cover Natural Protected Areas of the U.S. Virgin Islands Projected flood extent polygons and flood depth points based on 10-, 50-, 100-, and 500-year wave-energy return periods, with and without coral reefs, for the Territory of the U.S. Virgin Islands (the islands of Saint Croix, Saint John, and Saint Thomas) Buck Island, U.S. Virgin Islands, wave and water level data, 2016 Buck Island, U.S. Virgin Islands, wave and water level data, 2015 SACN Osceola Boat Landing: 2019 Digital Elevation Model (DEM), Bathymetry Depth Data SACN Osceola Boat Landing: 2019 Digital Elevation Model (DEM), Topobathy Elevation Data SACN Osceola Boat Landing: 2019 Acoustic Doppler Current Profiler (ADCP) Data SACN Osceola Boat Landing: 2019 Backscatter (Acoustic Reflectivity) Data SACN Osceola Boat Landing: 2019 Digital Elevation Model (DEM), Bathymetry Elevation Data SACN Osceola Boat Landing: 2019 River Bed Observations, Still Images SACN Osceola Boat Landing: 2019 Landforms Data SACN Osceola Boat Landing: 2019 Sidescan Sonar Data SACN Osceola Boat Landing: 2019 River Bed Observations SACN Osceola Boat Landing: 2019 Topobathy Depth Contours (vector) SACN Osceola Boat Landing: 2019 Topobathy Elevation Contours (vector) SACN Osceola Boat Landing: 2019 Substrate Data SACN Osceola Boat Landing: 2019 Digital Elevation Model (DEM), Bathymetry Depth Hillshade SACN Osceola Boat Landing: 2019 Digital Elevation Model (DEM), Bathymetry Elevation Hillshade SACN Osceola Boat Landing: 2019 Digital Elevation Model (DEM), Topobathy Elevation Hillshade Buck Island, U.S. Virgin Islands, wave and water level data, 2016 Buck Island, U.S. Virgin Islands, wave and water level data, 2015 SACN Osceola Boat Landing: 2019 River Bed Observations, Still Images SACN Osceola Boat Landing: 2019 River Bed Observations SACN Osceola Boat Landing: 2019 Acoustic Doppler Current Profiler (ADCP) Data SACN Osceola Boat Landing: 2019 Substrate Data SACN Osceola Boat Landing: 2019 Topobathy Depth Contours (vector) SACN Osceola Boat Landing: 2019 Sidescan Sonar Data SACN Osceola Boat Landing: 2019 Digital Elevation Model (DEM), Bathymetry Depth Data SACN Osceola Boat Landing: 2019 Digital Elevation Model (DEM), Bathymetry Elevation Data SACN Osceola Boat Landing: 2019 Landforms Data SACN Osceola Boat Landing: 2019 Digital Elevation Model (DEM), Bathymetry Depth Hillshade SACN Osceola Boat Landing: 2019 Digital Elevation Model (DEM), Bathymetry Elevation Hillshade SACN Osceola Boat Landing: 2019 Topobathy Elevation Contours (vector) SACN Osceola Boat Landing: 2019 Digital Elevation Model (DEM), Topobathy Elevation Data SACN Osceola Boat Landing: 2019 Digital Elevation Model (DEM), Topobathy Elevation Hillshade SACN Osceola Boat Landing: 2019 Backscatter (Acoustic Reflectivity) Data Projected flood extent polygons and flood depth points based on 10-, 50-, 100-, and 500-year wave-energy return periods, with and without coral reefs, for the Territory of the U.S. Virgin Islands (the islands of Saint Croix, Saint John, and Saint Thomas) Natural Protected Areas of the U.S. Virgin Islands U.S. Virgin Islands 2007 GAP Land Cover