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State of Alaska Alaska / Natural Resources DNR / Geological & Geophysical Surveys DGGS / Geologic HazardsHazards / Coastal HazardsCoastal

Baseline Coastal Data

Baseline coastal data collection

Collecting coastal elevation profiles with Emery rods to document erosion at Shishmaref.

Baseline coastal data contribute to investigations and mapping of coastal erosion and flooding. Although progress has been made to collect baseline coastal data, major gaps still exist. Baseline data is difficult to collect along Alaska's extensive coast, because the coast is extensive, making up nearly 40 percent of the entire U.S. coastline, is rapidly changing, and experiences some of the highest rates of erosion in the world. Baseline datasets need to be collected for the first time, updated, and continuously monitored throughout the state. The main data types used for the assessment of coastal flood and erosion hazards are orthoimages, topography, bathymetry, water levels, wave height and energy, continually operating reference systems, and sea ice thickness and extent.

Alaska Geospatial Council Coastal Strategy

Information about coastal mapping data available in Alaska, ongoing efforts to prioritize additional data needs, and upcoming Alaska Coastal Mapping Strategic Plan.

Alaska Water Level Watch Build Out

Alaska Water Level Watch priorities and gaps for water level data collection including tidal datums, real-time, and alternative solutions.

Alaska coastal mapping gaps & priorities

Information about Alaska's coastal mapping gaps related to flood and erosion hazards.

Elevation Datasets of Alaska

Elevation Datasets of Alaska displays known public-domain elevation datasets in Alaska. Elevation data is very important in forecasting the impacts of flooding and coastal storms in Alaska.

Alaska Water Level Watch logo

The Alaska Water Level Watch (AWLW) is a collaborative group working to improve the quality, coverage, and accessibility to water level observations in Alaska's coastal zone.

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