| ArcGIS REST Services Directory |
| Home > services > BioMap_in_Princeton_Massachusetts (FeatureServer) > All Layers and Tables | | API Reference |
The most intact, least disturbed wetlands within resilient, less developed landscapes, with fewer stressors such as pollution. Part of the BioMap Core Habitat (CH) components.
The most intact, least disturbed wetlands within resilient, less developed landscapes, with fewer stressors such as pollution. Part of the BioMap Core Habitat (CH) components.
The Massachusetts Division of Fisheries and Wildlife (MADFW) has mapped Coldwater Fisheries Resources (CFRs) at a scale of 1:25,000, based on the National Hydrography Dataset (NHD) data. CFRs are important habitat for a number of cold water species, including trout. Coldwater species are typically more sensitive than other species to alterations to stream flow, water quality and temperature within their aquatic habitat. Identification of CFRs is based on fish samples collected annually by staff biologists and technicians. New streams are sampled and evaluated yearly.
Last Updated on September 14, 2022.
Production
The MADFW stores stream sampling data based on SARIS ID. Since SARIS IDs were originally assigned at a scale of 1:100,000 those SARIS codes were first reassigned to the NHD arcs, mapped at a scale of 1:25,000. All of the NHD arcs, including artificial flowpaths, attributed with a given SARIS code were denoted as Coldwater if there was a sampling point for that stream that was designated a CFR.
Editing
Wherever possible, the reach designated by the SARIS code on the sampled stream was highlighted in its entirety in NHD. The SARIS code as assigned in the original 1:100,000 hydrography data was attributed to the NHD linework where it followed the flowpath. Rivers and streams are clipped at 0.5 km outside the Massachusetts border to account for any sinuosity at the state border.
Intact aquatic habitats (rivers, streams, lakes and ponds) supporting a diversity of aquatic species and important physical and ecological processes. Part of the BioMap Core Habitat (CH) components.
Assemblages of plant and animal species with limited distribution and the best examples of common assemblages. This data set is maintained by MassWildlife's Natural Heritage and Endangered Species Program (NHESP). Part of the BioMap Core Habitat (CH) components.
The most intact forests of Massachusetts, least impacted by development and essential for animals and plants dependent on remote habitat. Part of the BioMap Core Habitat (CH) components.
Clusters of ecologically significant pools and intact surrounding upland habitat to ensure connectivity between pools. Part of the BioMap Core Habitat (CH) components.
Areas critical to the long-term conservation of our most vulnerable species and their habitats. Part of the BioMap Core Habitat (CH) components.
This wetlands datalayer has been superceded by a statewide update of the wetlands data based on photointerpretation of 2005 aerial photography (WETLANDSDEP_POLY). This datalayer is being maintained for reference purposes only.
The DEP Wetlands datalayer comprises two feature types, polygons and arcs (lines). The attribute codes in the polygon layer describe different types of wetland environments and the arc attributes describe line types based on adjacent polygon types or arcs defined as hydrologic connections. The wetlands are interpreted from 1:12,000 scale, stereo color-infrared photography (CIR) by staff at UMASS Amherst. The interpretation is field checked by Department of Environmental Protection (DEP) Wetlands Conservancy Program (WCP). Completed interpretations are then scanned and converted into rectified polygons and lines using standard photogrametric techniques by a consultant under contract to the WCP. Final quality control is performed by WCP GIS staff. The polygons and arcs are merged into a single layer (in coverage format) and additional attributes are added for the polygon features. The arc features are coded based on the adjacent polygon types, and attributes are added to the annotation subclass wet. An overlay process using the 1:25,000 Hydrography layer codes the PALIS_ID and PWSID attributes. The coding of the PALIS_ID and PWSID attributes was done using an overlay process and was not subject to the same quality control as the 1:25,000 Hydrography layer. Areas of wetlands in this layer may be shown as open water in the 1:25,000 Hydrography layer and so the coding of the PALIS_ID would not occur. Lines represented in the old 1:5,000 Streams layer are shown in this layer as hydrologic connections. These lines are only defined where they connect the various wetland types. These connections were not delineated within wetland areas, nor does they depict a complete stream network outside of wetland areas. Because the source scale of the CIR?s is 1:12,000, plotting of open water features at a larger scale when overlaid onto existing 1:5,000 imagery will reveal areas of open water that are not delineated as such. It should be noted that the resulting wetlands shown in this datalayer are for planning purposes only. Wetlands boundary determination for other purposes, such as the Wetlands Protection Act MA Act M.G.L. c. 131 or local by-laws, must use the relevant procedures and criteria.
The political boundary datalayer is a polygon representation of town boundaries created from arcs developed from survey coordinates extracted from the 68-volume Harbor and Lands Commission Town Boundary Atlas for the 351 communities (cities and towns) in Massachusetts. The Atlas was published in the early 1900's and is maintained by the Survey Section of Massachusetts Highway Department. For communities with a coastal boundary, MassGIS has collaborated with Massachusetts Water Resources Authority and the Department of Environmental Protection to complete a 1:12000 scale coastline. The boundary for the coastline was defined as being the upland side of tidal flats and rocky inter-tidal zones. Note that the 351 communities are the official municipal names, not including "villages" or other sections of towns.