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Landscape 3.3 Data for Freshwater Mussel Habitat of New Jersey [New Jersey]

State of New Jersey Department of Environmental Protection (NJDEP), Division of Fish and Wildlife (DFW), Endangered and Nongame Species Program (ENSP). Full Details

Full Details

Title
Landscape 3.3 Data for Freshwater Mussel Habitat of New Jersey [New Jersey]
Description
DEP maintains a Stream Network data layer that is a subset of the USGS 1:24,000 high-resolution National Hydrography Dataset (NHD). In Version 3.3 of the Landscape Project, stream and water body centerlines from the NHD Streams 2002 data layer are used to represent freshwater mussel habitat.Water body centerline and stream centerline data are valued exclusively by freshwater mussel species occurrence areas while other aquatic species habitats are represented with polygons from the Species-Based Habitat layer. In order to form representative "patches" of habitat from the NHD Streams 2002 layer, centerlines were broken at the following points:The confluence of two or more streamsThe inflow/outflow of a water bodyStretches of stream intersected by a mussel SOA are valued as habitat. All valued streams are buffered by 0.75 kilometers upstream and downstream. The 0.75 kilometer distance is chosen as a conservative buffer estimate because scientific literature, which is based largely upon larval transport by host fishes, indicates that if there are two occurrences within two kilometers of each other (assuming unsuitable habitat between), these occurrences should be considered as part of the same local population (NatureServe 2011). In the cases where stream buffers of separate occurrences of the same species met, either upstream or downstream, the stream segments between those occurrences are also valued for that species. In addition, in cases where dams are barriers the extent of stream valued was limited.
Creator
State of New Jersey Department of Environmental Protection (NJDEP), Division of Fish and Wildlife (DFW), Endangered and Nongame Species Program (ENSP).
Temporal Coverage
Last modified 2023-07-13
Date Issued
2018-11-26
Access Rights
Public
Format
Shapefile
Language
English
Date Added
August 28, 2025

Location

Links

Cite and Reference

  • Citation
    State of New Jersey Department of Environmental Protection (NJDEP), Division of Fish and Wildlife (DFW), Endangered and Nongame Species Program (ENSP). (2018). Landscape 3.3 Data for Freshwater Mussel Habitat of New Jersey [New Jersey]. . https://gisdata-njdep.opendata.arcgis.com/datasets/njdep::landscape-3-3-data-for-freshwater-mussel-habitat-of-new-jersey (web service)
  • BTAA Geoportal Link

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