MassMapper: MassMapper is MassGIS's flagship interactive map. Use this to access virtually all MassGIS map layers and to view descriptive information about the features on the map.

BioMap: The BioMap web portal delivers the latest scientific data and resources to help state and local governments, land trusts, non-government organizations, and other conservation partners strategically plan projects to conserve wildlife and their habitats. The latest version of BioMap combines more than 40 years of rigorously documented rare species and natural community records from MassWildlife with cutting-edge climate resilience data from The Nature Conservancy and spatial data identifying intact fish and wildlife communities, habitats, and ecosystems that are the focus of the Massachusetts State Wildlife Action Plan.

Bellingham GIS: Bellingham's GIS database

US Fish & Wildlife Wetlands Inventory: The Wetlands Data Layer is the product of over 45 years of work by the National Wetlands Inventory (NWI) and its collaborators and currently contains more than 35 million wetland and deepwater features. The data layer is updated twice a year and these changes are reflected on the mapper and in the data downloads.

FEMA Map: The FEMA Flood Map Service Center (MSC) is the official public source for flood hazard information produced in support of the National Flood Insurance Program (NFIP). Use the MSC to find your official flood map, access a range of other flood hazard products, and take advantage of tools for better understanding flood risk.