Bathymetry for the Hudson River was derived from twenty surveys containing 120,771 soundings. No surveys were omitted. The average separation between soundings was 51 meters. The surveys dated from 1930 to 1945. The total range of sounding data was 1.5 meters to -61.9 meters at mean low water. Mean high water values between 0.8 and 1.5 meters were assigned to the shoreline. Eleven points were found that were not consistent with the surrounding data. These were removed prior to tinning. DEM grid values outside the shoreline (on land) were assigned null values (-32676). The Hudson River has eighteen 7.5 minute DEMs and four one degree DEMs. The 1 degree DEMs were generated from the higher resolution 7.5 minute DEMs which covered the estuary. A Digital Elevation Model (DEM) contains a series of elevations ordered from south to north with the order of the columns from west to east. The DEM is formatted as one ASCII header record (A- record), followed by a series of profile records (B- records) each of which include a short B-record header followed by a series of ASCII integer elevations (typically in units of 1 centimeter) per each profile. The last physical record of the DEM is an accuracy record (C-record). The 7.5-minute DEM (30- by 30-m data spacing) is cast on the Universal Transverse Mercator (UTM) projection. It provides coverage in 7.5- by 7.5-minute blocks. Each product provides the same coverage as a standard USGS 7.5-minute quadrangle but the DEM contains over edge data. Coverage is available for many estuaries of the contiguous United States but is not complete.
The Hudson River Estuary Shoreline was mapped in the field and on desktop to inventory all existing 'Engineered' and 'Natural' shorelines. Each shoreline segment was inventoried using a pre-defined set of descriptions for 'Nature', Structure', 'Substrate', 'Adjacent Land Use', and 'Condition'. Each shoreline was geo-located using ArcGIS Survey 123 on a computer tablet and a photo was taken for shorelines mapped in the field. Engineered shorelines immediately adjacent to railroad tracks and the river were mapped from desktop and used stock photos of rail road shorelines to represent the existing condition..
The National Oceanic and Atmospheric Administration (NOAA) has the statutory mandate to collect hydrographic data in support of nautical chart compilation for safe navigation and to provide background data for engineers, scientific, and other commercial and industrial activities. Hydrographic survey data primarily consist of water depths, but may also include features (e.g. rocks, wrecks), navigation aids, shoreline identification, and bottom type information. NOAA is responsible for archiving and distributing the source data as described in this metadata record.
The National Oceanic and Atmospheric Administration (NOAA) has the statutory mandate to collect hydrographic data in support of nautical chart compilation for safe navigation and to provide background data for engineers, scientific, and other commercial and industrial activities. Hydrographic survey data primarily consist of water depths, but may also include features (e.g. rocks, wrecks), navigation aids, shoreline identification, and bottom type information. NOAA is responsible for archiving and distributing the source data as described in this metadata record.
The National Oceanic and Atmospheric Administration (NOAA) has the statutory mandate to collect hydrographic data in support of nautical chart compilation for safe navigation and to provide background data for engineers, scientific, and other commercial and industrial activities. Hydrographic survey data primarily consist of water depths, but may also include features (e.g. rocks, wrecks), navigation aids, shoreline identification, and bottom type information. NOAA is responsible for archiving and distributing the source data as described in this metadata record.
These are long-term data on water chemistry, water clarity, and plankton from sites along the Hudson River in eastern New York. Most variables were measured from 1987-2015 during the ice-free season (approximately April-November). Variables include water temperature, dissolved oxygen, secchi transparency, light extinction, seston weight and organic matter content, particulate and dissolved organic carbon, turbidity, total N, ammonium and nitrate concentrations, total P, and soluble reactive phosphorus concentration, chlorophyll (=phytoplankton biomass), bacterial abundance and production, and micro- and macrozooplankton numbers.
These data were automated to provide an accurate high-resolution historical shoreline of Hudson River, NY suitable as a geographic information system (GIS) data layer. These data are derived from shoreline maps that were produced by the NOAA National Ocean Service including its predecessor agencies which were based on an office interpretation of imagery and/or field survey. The NGS attribution scheme 'Coastal Cartographic Object Attribute Source Table (C-COAST)' was developed to conform the attribution of various sources of shoreline data into one attribution catalog. C-COAST is not a recognized standard, but was influenced by the International Hydrographic Organization's S-57 Object-Attribute standard so the data would be more accurately translated into S-57. This resource is a member of https://inport.nmfs.noaa.gov/inport/item/39808
USGS, HUDSON RIVER AT 01354330.
Hudson River Estuary Shallow Water Surveys. Subbottom data was collected November 5 to December 15, 2009, in the estuary north from Saugerties to Troy. Data Collection and Processing: Subbottom Data - Fugro utilized the EdgeTech SB216 Chirp subbottom profiler system for seismic data collection. This system was operated using a swept frequency range of 2-16 KHz, maximizing subsurface resolution within the very shallow near-surface material (1- 5 m beneath seafloor). Subbottom data was processed and interpreted using Discover and SMT Kingdom software. The intent of the processing was to provide the NYSDEC with SEG-Y files that were properly filtered and spatially oriented to allow for near-surface interpretation of sediments in the Hudson River. Processing steps for the subbottom data included swell filtering to compensate for sea conditions during survey operations, compiling correct shotpoint navigation, and adjusting data gains for optimal interpretation. An isopach (sediment thickness) of the unconsolidated surficial sediments was created from the seafloor and mapped sediment horizon base using an acoustic two-way travel time of 1500 meters/second. Subbottom data was used to assist in selecting sediment sampling locations. Graphical sub-bottom profiles for areas of interest were produced and descriptive results will be included in the final report. Points were created every 300th shot (approximately 100 meters). Original contact information: Contact Name: John Ladd Contact Org: Hudson River National Estuarine Research Reserve, NYS DEC Phone: 845-889-4745 Email: jxLadd@gw.dec.state.ny.us
Contains the Hudson River Shoreline from maps of the Hudson River by the Survey of 1861-1865. Source projection: NAD 1927 UTM Zone 18N Projected to: WGS 1984 Web Mercator Auxiliary Sphere. Data current as of January 2001.Contact Information:Ralph HillCorning Tower39 FloorAlbany, New York 12242PH: 518-473-6572FAX: 518-474-0011ralph.hill@ogs.ny.gov
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The Hudson River, New York, was contaminated with polychlorinated biphenyls (PCBs) from two General Electric plants over a period of ~30 years and PCBs are still present in sediment and biota today. The river provides habitat for a variety of plants and animals, including native freshwater mussels. Although little is known about mussels in this river, managers were concerned that a 7-year remediation program to remove PCB-contaminated sediments could affect mussels. From 2013-2019, we conducted stratified (non-remediated, before remediation, after remediation) quantitative surveys across 17-pool-stratum combinations across nine pools. Sampling was done during August through October of each year. At each site, divers excavated sediment from two 0.063 square meter quadrats on the riverbed. Divers excavated substrates to a depth of about 15 centimeters and placed material from both quadrats into a 6-millimeter mesh bag. Mussels were sorted from the sediments, identified to species, ...
The dataset is composed of six tables containing environmental DNA (eDNA) and electrofishing data from American eel (Anguilla rostrata) surveys conducted on parts of the Mohawk River watershed and tributaries to the Hudson River in New York. The dataset includes (a) eDNA data from 36 sites in the Mohawk River watershed and adjacent areas including parts of the Eastern Erie Canal, Mohawk River, and tributaries that were sampled in spring 2021 and again in summer 2021,(b) paired eDNA/electrofishing data from 15 sites on tributaries to the Hudson River that were sampled between 2020 and 2021, and (c) model output of predicted American eel density from all sites in the Mohawk River watershed and adjacent areas where eDNA was detected. The table "MohawkHudsonEel_MohawkScreening_eDNAData" contains eDNA data from the 36 sites in the Mohawk River watershed, the table "MohawkHudsonEel_MohawkScreening_SiteData" contains supporting information on the 36 sites in the Mohawk River watershed, the table "MohawkHudsonEel_HudsonTribCalibration_LWData" contains the length and weight for all American eel captured during electrofishing surveys from the 15 sites on tributaries to the Hudson River, the table "MohawkHudsonEel_HudsonTribCalibration_eDNAData" contains eDNA data from the 15 sites on tributaries to the Hudson River, the table "MohawkHudsonEel_HudsonTribCalibration_SiteData" contains supporting information on the 15 sites on tributaries to the Hudson River including the dimensions of the reaches where electrofishing was conducted, and the table "MohawkHudsonEel_MohawkScreening_DensityEstimate" contains predicted density of American eel estimated from eDNA concentration using linear regression from all sites in the Mohawk River watershed and adjacent areas where eDNA was detected.
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The Hudson Shelf Valley is the submerged seaward extension of the ancestral Hudson River drainage system and is the largest physiographic feature on the Middle Atlantic continental shelf. The valley begins offshore of New York and New Jersey at about 30-meter (m) water depth, runs southerly and then southeasterly across the Continental Shelf, and terminates on the outer shelf at about 85-m water depth landward of the head of the Hudson Canyon. Portions of the 150-kilometer-long valley were surveyed in 1996, 1998, and 2000 using a Simrad EM1000 multibeam echosounder mounted on the Canadian Coast Guard ship Frederick G. Creed. The purpose of the multibeam echosounder surveys was to map the bathymetry and backscatter intensity of the sea floor of the valley, providing a framework for geologic, oceanographic, and geochemical studies. The data from the three surveys are combined to produce grids of bathymetry and backscatter intensity at 12-m resolution that cover the entire valley and ...
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A spreadsheet with values received from the Mohawk River (USGS stream gage #01357500), upper Hudson River (USGS stream gage #01335754), and the Hudson River main stem (USGS stream gage #01358000). U.S. Geological Survey, National Water Information System data available on the World Wide Web (USGS Water Data for the Nation), URL [http://waterdata.usgs.gov/nwis/]. http://dx.doi.org/10.5066/F7P55KJN
The Hudson Shelf Valley is the submerged seaward extension of the ancestral Hudson River drainage system and is the largest physiographic feature on the Middle Atlantic continental shelf. The valley begins offshore of New York and New Jersey at about 30-meter (m) water depth, runs southerly and then southeasterly across the Continental Shelf, and terminates on the outer shelf at about 85-m water depth landward of the head of the Hudson Canyon. Portions of the 150-kilometer-long valley were surveyed in 1996, 1998, and 2000 using a Simrad EM1000 multibeam echosounder mounted on the Canadian Coast Guard ship Frederick G. Creed. The purpose of the multibeam echosounder surveys was to map the bathymetry and backscatter intensity of the sea floor of the valley, providing a framework for geologic, oceanographic, and geochemical studies. The data from the three surveys are combined to produce grids of bathymetry and backscatter intensity at 12-m resolution that cover the entire valley and the head of the Hudson Canyon. The mapping was done by the U.S. Geological Survey in cooperation with the U.S. Army Corps of Engineers with support from the Canadian Hydrographic Service and the University of New Brunswick.
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Side Scan Point Files. These points correspond to individual pings which produced hte side-scan-sonar backscatter imagery. Sonar data were collected November 6 to December 15, 2009, in the estuary north from Saugerties to Troy. Data Collection and Processing: The interferometric system used to measure acoustic reflectivity, provided a quantitative measure of reflectivity for every square meter of the survey area. Fugro's system measured and recorded acoustic reflectivity that has a high dynamic range such that the full range of reflectivity's encountered in the estuary environment can be recorded while maintaining a constant gain setting on the system receiver. Reflectivity data from the GeoSwath was used to produce a normalized as well as a classified image of the bottom. Additionally, Fugro provided slope, aspect and hillshade models as additional acoustic parameters. Backscatter data processing was completed with CARIS 7.0. Raw XTF files were created by converting Hypack format (.HSX) into Triton format (.XTF). Points were exported from the raw XTF files at an interval of 400 pings (approximately 100 meters).
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From May to December 2017, 48 environmental samples and six quality control samples were collected throughout the Upper Hudson and Central New York River Basins. Samples were collected from nine production wells and 11 domestic wells in the Upper Hudson River Basin, and 14 production wells and 14 domestic wells in the Central New York River Basin. Of the total wells sampled, 22 were completed in bedrock and 26 were completed in sand and gravel. Approximately 20 percent of samples were collected from wells that were previously sampled as in 2007 and 2012. Groundwater samples were collected prior to any treatment or filtration systems, from existing domestic and production wells equipped with permanently installed pumps. Samples were collected and processed using standard USGS methods and were analyzed for 372 constituents including physicochemical properties, dissolved gases, major ions, nutrients, trace elements, pesticides, volatile organic compounds (VOCs), radiological activit ...
Juvenile and adult fish surveys are a component of the U.S. Fish and Wildlife Services (USFWS) Lower Great Lakes Fish and Wildlife Conservation Office (LGLFWCO) Aquatic Invasive Species (AIS) New York State Canal System (Erie Canal) surveillance program. Juvenile and adult fish surveys of the Erie Canal began in 1998 with the goal of detecting novel AIS fish species that could possibly be using the canal system to move between the Great Lakes and Hudson River drainages. Surveys occurred annually from 1998 - present, excluding 2020 due to COVID-19 restrictions which prevented sampling for that year. Sampling focuses on sections of the NYS Canal System from Tonawanda, NY to Waterford, NY. Juvenile and adult fish are collected using boat-based electrofishing transects. These transects have a standardized duration of 500 seconds. For the most part, each general sampling location along the Erie Canal has a few legacy transects which electrofishing occurs. These surveys occur biannually, typically targeting early and late summer conditions. Electrofishing parameters are analyzed and designed to capture the maximum species richness at locations with the assumption that capturing an abundance of species, including singletons and doubletons, could lead to detecting rare novel AIS species if present. All fish collected are counted and identified to species in the field using taxonomic keys. If an identification cannot be made in the field, the specimen or some of its tissue is preserved using 95% ethanol (EtOH) and identifications are made in the laboratory either taxonomically or genetically (recent survey years; Northeast Fishery Center). A subset of individuals from each species are measured (total length; mm) in the field. Any significant AIS detections are reported to partners following an internal communications protocol. The information within this dataset is geospatial in nature and documents juvenile and adult fish sampling events. Both abiotic and biotic data is collected for each individual sampling event. It is possible that over time, the tools and instruments used to collect information have changed or been modified. Also, although infrequent, some fish identifications within this data set may be inaccurate and without photographs or preservation of the individual to confirm identification, those records will remain within this data set unless otherwise detected and removed.
Juvenile and adult fish surveys are a component of the U.S. Fish and Wildlife Services (USFWS) Lower Great Lakes Fish and Wildlife Conservation Office (LGLFWCO) Aquatic Invasive Species (AIS) New York State Canal System (Erie Canal) surveillance program. Juvenile and adult fish surveys of the Erie Canal began in 1998 with the goal of detecting novel AIS fish species that could possibly be using the canal system to move between the Great Lakes and Hudson River drainages. Surveys occurred annually from 1998 - present, excluding 2020 due to COVID-19 restrictions which prevented sampling for that year. Sampling focuses on sections of the NYS Canal System from Tonawanda, NY to Waterford, NY. Juvenile and adult fish are collected using boat-based electrofishing transects. These transects have a standardized duration of 500 seconds. For the most part, each general sampling location along the Erie Canal has a few legacy transects which electrofishing occurs. These surveys occur biannually, typically targeting early and late summer conditions. Electrofishing parameters are analyzed and designed to capture the maximum species richness at locations with the assumption that capturing an abundance of species, including singletons and doubletons, could lead to detecting rare novel AIS species if present. All fish collected are counted and identified to species in the field using taxonomic keys. If an identification cannot be made in the field, the specimen or some of its tissue is preserved using 95% ethanol (EtOH) and identifications are made in the laboratory either taxonomically or genetically (recent survey years; Northeast Fishery Center). A subset of individuals from each species are measured (total length; mm) in the field. Any significant AIS detections are reported to partners following an internal communications protocol. The information within this dataset is geospatial in nature and documents juvenile and adult fish sampling events. Both abiotic and biotic data is collected for each individual sampling event. It is possible that over time, the tools and instruments used to collect information have changed or been modified. Also, although infrequent, some fish identifications within this data set may be inaccurate and without photographs or preservation of the individual to confirm identification, those records will remain within this data set unless otherwise detected and removed.
Bathymetry for the Hudson River was derived from twenty surveys containing 120,771 soundings. No surveys were omitted. The average separation between soundings was 51 meters. The surveys dated from 1930 to 1945. The total range of sounding data was 1.5 meters to -61.9 meters at mean low water. Mean high water values between 0.8 and 1.5 meters were assigned to the shoreline. Eleven points were found that were not consistent with the surrounding data. These were removed prior to tinning. DEM grid values outside the shoreline (on land) were assigned null values (-32676). The Hudson River has eighteen 7.5 minute DEMs and four one degree DEMs. The 1 degree DEMs were generated from the higher resolution 7.5 minute DEMs which covered the estuary. A Digital Elevation Model (DEM) contains a series of elevations ordered from south to north with the order of the columns from west to east. The DEM is formatted as one ASCII header record (A- record), followed by a series of profile records (B- records) each of which include a short B-record header followed by a series of ASCII integer elevations (typically in units of 1 centimeter) per each profile. The last physical record of the DEM is an accuracy record (C-record). The 7.5-minute DEM (30- by 30-m data spacing) is cast on the Universal Transverse Mercator (UTM) projection. It provides coverage in 7.5- by 7.5-minute blocks. Each product provides the same coverage as a standard USGS 7.5-minute quadrangle but the DEM contains over edge data. Coverage is available for many estuaries of the contiguous United States but is not complete.