Name: Marsh Migration 1.2 ft Sea Level Rise

Display Field: Scenario

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Description: This dataset is used for status assessment, tidal habitat conservation, restoration, and planning for coastal Maine. This data represents low-lying areas of the non-tidal landscape adjacent to current tidal wetlands that could become marsh migration space as sea levels rise. Each marsh migration scenario represents the extent to which highest astronomical tide intersects undeveloped lands if sea level is increased by 1.2 feet. Predictions for the amount of sea level rise in the next 50-100 years vary, but the fact that sea level is rising is well documented (https://www.maine.gov/dacf/mgs/hazards/slr_ticker/index.html). Tidal marshes are ecologically and economically significant natural systems. Planning for their continued functional existence given various sea level rise scenarios is important for sustaining biodiversity and maintaining ecosystem services. Identifying these areas creates the opportunity for government agencies, municipalities, private conservation organizations, and land managers to plan for compatible uses of the lands and avoid impacts to future tidal marsh or buffers to that marsh space. These data can be paired with similarly created data that provides for scenarios with 0, 1.2, 1.6, 3.9, 6.1, 8.8, and 10.9 foot increases in sea level. Together, these datasets provide frames of reference for incremental increases of predicted sea level rise, to better serve planning purposes at different time frames.

Copyright Text: Maine Department of Agriculture, Conservation and Forestry (Maine Geological Survey and Maine Natural Areas Program), 2023

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Name: Marsh Migration 1.2 ft Sea Level Rise
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Last Edit Date: 1/16/2026 5:45:35 PM

Schema Last Edit Date: 1/16/2026 5:45:35 PM

Data Last Edit Date: 1/16/2026 5:45:35 PM

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