Check Out What's New!
The Beginning with Habitat (BwH) Map Viewer is an on-line adaptation of BwH’s extensive collection of natural resource information provided by state, federal, and non-profit conservation partners. This information can help land-use decision makers balance growth and management goals with conservation of Maine’s fish and wildlife and natural places. Please access the BwH website for additional map services including data and presentation requests:BwH Request Form

Bwh Map Viewer data are organized into the following sections:
• Locator Information: Layers to navigate to your project area.
• Physical Natural Resources: Wetland and aquifer layers.
• Wildlife Habitats: Layers depicting rare species occurrences, significant wildlife habits, essential wildlife habitats, aquatic habitats and riparian buffers.
• Plants and Natural Communities: Layers depicting rare plant occurrences and exemplary natural communities (not displayed in Unorganized Territories).
• Conservation and Connectivity Planning Resources: Layers include conserved lands, Focus Areas of Statewide Ecological Significance, undeveloped habitat blocks and modeled areas of wildlife movements across roads.
Use combinations of these layers together to: 1) find your project area (Locator Information), 2) identify mapped natural resources such as rare plants and animals, and 3) identify how your project fits into the surrounding conservation landscape.
Disclaimer: Maps generated with this tool should be used only as preliminary planning references to identify and illustrate locations of mapped occurrences and habitats. If your project requires environmental permitting, we encourage you to contact MDIFW's Environmental Review Team at IFWEnvironmentalreview@maine.gov, or visit their online Environmental Review Tool. Habitat data sets are updated continuously as more accurate and current data becomes available. However, as many areas have not been completely surveyed, features may be present that are not yet mapped, and the boundaries of some depicted features may need to be revised. Local knowledge is critical in providing accurate data. If errors are noted in the current depiction of resources, please contact maine.bwh@maine.gov. For general questions about the viewer, please contact Amy.Dowley@maine.gov. For the most accurate and current information about land ownership, consult with the local assessor and/or other local land management agencies. If public access potential to any of the properties displayed here is uncertain, landowners should be contacted first to determine if permission is necessary.
This application has been provided by Beginning with Habitat with assistance from CGIS Solutions and is intended for PLANNING PURPOSES only. These maps SHOULD NOT be used for environmental review and/or permitting purposes. Neither Beginning with Habitat nor CGIS Solutions accept any liability for the completeness or accuracy.
Application by CGIS Solutions
Layer Details:
Toggle layers on and off. Layers with gray checkbox will appear once zoomed in or out to visible scale.


Legend and Other Resources

The legend below provides a description each layer, and a link to its source when available.


A Note on Bald Eagles: Bald Eagles are no longer listed under the State or Federal Endangered Species Acts but are still protected under several federal laws. For more information on these please visit: State of Maine Bald Eagle Recovery as well as the State of Maine Bald Eagle Recovery Story Map

Locator Information


City/Township: For more information please visit: State of Maine GIS Catalog

State of Maine Parcels: For more information please visit: State of Maine GIS Catalog

Developed Land /Impervious Surfaces: Impervious surfaces including buildings and roads.

Drainage Divides: These are the smallest hydrologic units mapped in Maine. They contain watershed boundaries for most ponds and rivers in Maine based on USGS 1:24,000 scale topography.

Physical Natural Resources


National Wetlands Inventory Wetlands: National Wetlands Inventory (NW I) uses aerial photographs to approximate wetland locations. NW I data is not a comprehensive mapping of wetland resources and typically under represents the presence of wetlands on the landscape. The presence of wetlands needs to be determined in the field prior to conducting activities that could result in wetland disturbance. The US Fish and Wildlife Service (FWS) is the principal US Federal agency tasked with providing information to the public on the status and trends of our Nation's wetlands. For more information please visit: USFW Wetlands

Aquifers: An underground layer of water-bearing permeable rock, rock fractures or unconsolidated materials (gravel, sand, or silt). For more information please visit: State of Maine Aquifers

Wildlife Habitats


Rare, Threatened, or Endangered Wildlife/State Listed Animal Habitats: Known rare, threatened, or endangered species occurrence and/ or the associated habitats. Some species are labeled ‘rare species’ to protect them from collection. For more information please visit: State of Maine Endangered Wildlife

Essential Wildlife Habitats: These areas currently or historically providing physical or biological features essential to the conservation of an endangered or threatened species in Maine and which may require special management considerations. These areas focus on coastal wetlands and sand dune systems that are utilized by species such as Roseate Terns, Piping Plovers and Least Terns. These areas are used for nesting, feeding and brood rearing and are essential to conserving endangered or threatened species. As required under the Maine Endangered Species Act, a state agency or municipal government shall not permit, license, fund or carry out projects that will significantly alter an Essential Habitat or violate protection guidelines adopted for the habitat. Landowners, project planners, municipalities or state agencies considering a project in or near an Essential Habitat should contact an MDIFW Regional Wildlife Biologist for assistance. For more information please visit: State of Maine IF&W

Significant Wildlife Habitats


Deer Wintering Habitat: This dataset contains deer wintering areas (DWAs) in organized townships that qualify as Significant Wildlife Habitat under Maine's Natural Resources Protection Act as mapped by Maine Department of Inland Fisheries and Wildlife Regional Biologists. For more information please visit: State of Maine

Significant Vernal Pools: A pool depression used for breeding by amphibians and other indicator species and that portion of the critical terrestrial habitat within 250’ of the spring or fall highwater mark. For more information please visit: State of Maine Environmental Review or State of Maine NRPA

Inland Waterfowl / Wading Bird Habitat (IWWH): Moderate and High value Inland Waterfowl/Wading bird Habitats (IWWHs) are defined under Maine’s Natural Resources Protection Act (NRPA) based on the composition of wetland types, habitat diversity, size, percent open water, and habitat interspersion. The individual scores of these 5 characteristics are summed and the total score used to assign the rating based on thresholds that result in a relatively small number of Highs (the “best of the best”; about 5% of all wetlands in Maine) versus a larger proportion of Moderates (25% of all wetlands). High has some combination of the 5 characteristics that make it better habitat for inland waterfowl and wading birds and results in a score that exceeds the minimum threshold for a High. For more information please visit: State of Maine IWWH or State of Maine NRPA

Tidal Waterfowl / Wading Bird Habitat (TWWH): Tidal Waterfowl/Wading Bird habitats include aquatic beds, eelgrass, emergent wetlands, mudflats, seaweed communities, and reefs. For more information please visit: State of Maine Environmental Review or State of Maine NRPA

Seabird Nesting Island: An island, ledge, or portion thereof in tidal waters with documented, nesting seabirds or suitable nesting habitat for endangered seabirds. For more information please visit: State of Maine Seabirds or Contact a Biologist

Shorebird Areas: Coastal staging areas that provide feeding habitat like tidal mud flats or roosting habitat like gravel bars or sand pits for migrating shorebirds. For more information please visit: State of Maine Shorebirds or Contact a Biologist

Shellfish Beds: Vital shellfish resources near streams and shoreline areas. ** This map data is not to be used for legal determination of open/closed status. For current shellfish closures, consult State of Maine DMRFor more information about classification of shellfish flats, visit: State of Maine DMR Classification

Aquatic Species and Habitats


Wild Brook Trout Habitat: Avoid disturbing habitat within 100 feet of Brook Trout habitat; if riparian areas within that zone are cleared or degraded, than restoring the riparian area to natural tree cover is also recommended. These areas may also be candidates for instream habitat restoration and/or stream connectivity enhancement. Consult with MDIFW Regional Fisheries Biologists or the Native Fish Conservation Biologist for further guidance. For more information please visit: State of Maine IF&W

Atlantic Salmon Habitat: Developed from field surveys conducted on the mainstem and selected tributaries of the Aroostook, Dennys, Ducktap, East Machias, Kennebec, Machias, Passagassawakeag, Penobscot, Pleasant, Presumpscot, Saco, Sheepscot, St. George, Tunk and Union Rivers in Maine by staff of the Maine Dept. of Marine Resources. For more information please visit: Atlantic Salmon Restoration

Riparian Habitat:Shoreline habitat depicted using common regulatory zones, including a 250-foot-wide strip around Great Ponds (ponds 10 acres in size and greater), rivers, coastline, and wetlands 10 acres in size and greater; and a 75-foot-wide strip around streams. Riparian areas depicted on this map may already be affected by existing land uses. Resource agencies may provide buffer recommendations based on specific habitat values and which may differ from planning-level information represented herein. For example, MDIFW generally recommends maintaining 100-foot undisturbed, forested buffers from the upland edge of all intermittent and perennial streams and any contiguous wetlands.

Plants and Natural Communities


*Rare Plants and Natural Communities: Known rare, threatened, or endangered plant occurrences based on field observations. Some species are labeled ‘rare species’ to protect them from collection. For more information visit:MNAP Rare Plants

*Exemplary Natural Communities: 129 different habitat types that occur in Maine, including floodplain forests, coastal bogs, alpine summits, and many others. Each type is assigned a rarity rank of 1 (Critically Imperiled) through 5 (Demonstrably Common). For more information please visit: MNAP Natural Communities and Ecosystems

*Maine Natural Areas Program rare plant and natural community features are not displayed in the unorganized territories. Please Contact MNAP to access this data.

 

Conservation and Connectivity Planning Resources



Undeveloped Habitat Blocks: Remaining land outside of Development Buffers. Blocks greater than 100 acres are labeled with their estimated acreage.

 

Approximate Road Crossing Riparian Habitat Connections

Represented habitat connections identified through computer modeling highlight locations where quality habitat is likely to occur on both sides of a given road between undeveloped habitat blocks greater than 100 acres and between higher value wetlands. These representations are approximate and have not been field verified.

Undeveloped Block Connectors: Likely road crossing areas linking undeveloped habitat blocks greater than 100 acres. The threat of habitat fragmentation and animal mortality corresponds to traffic volume.

 

Yellow lines and arrows represent habitat road crossings with daily traffic volumes less than 2000 vehicles per day.

 

 

Red lines and arrows represent habitat road crossings with daily traffic volumes greater than 2000 vehicles per day.

 

 

Riparian Connectors: Likely crossing locations for wetland dependent species moving between waterways and wetlands divided by roads.

 

Blue lines and arrows represent riparian road crossings with daily traffic volumes less than 2000 vehicles per day.

 

 

Purple lines and arrows represent riparian road crossings with daily traffic volumes greater than 2000 vehicles per day.

 

 

Highway Bridge Connectors: Bridges along I-95 and I-295 that span riparian habitat connecting adjacent but separated habitat blocks. These are locations where species are likely to take advantage of infrastructure to move between habitat blocks.


Conserved Lands

The State of Maine’s conserved lands database includes lands in federal, state, and nonprofit ownership. Some privately owned conservation lands may not be represented. For the most accurate and current information about land ownership, consult with the local assessor and/or other local land management agencies. If public access potential to any of the properties displayed here is uncertain, landowners should be contacted first to determine if permission is necessary.

Maine Conserved Lands: State of Maine Conserved Lands. For more information please visit: State of Maine Conservation Lands

 

*Focus Areas of Statewide Ecological Significance:

Beginning with Habitat Focus Areas of Statewide Ecological Significance are areas to prioritize collaborative, non-regulatory conservation actions that benefit biodiversity in Maine. Focus Areas were mapped to highlight natural areas of statewide biodiversity importance and contain high concentrations of at-risk species and habitats. Though Focus Areas occupy only about 11.5% of Maine's land area, collectively they include examples of over 85% of rare, threatened, and endangered plant and animal species and high-quality examples of all natural community types. For more information, see website: State of Maine Focus Areas.

*Only Focus Areas overlapping organized towns are displayed. Please contact Beginning with Habitat through our online request form for information about Focus Areas in unorganized townships.