This WMS portrays one dimensional linear water features such as streams, creeks and rivers that are in the Alaska Hydrography Database.
This WMS portrays one two dimensional fresh water features such as lakes and ponds that are in the Alaska Hydrography Database.
This WMS shows the update status of Hydrography editing projects throughout the State of Alaska.
This WMS shows the current and recent hydrography editing activity in Alaska.
The National Hydrography Dataset (NHD) is a comprehensive set of digital spatial data that encodes information about naturally occurring and constructed bodies of surface water (lakes, ponds, and reservoirs), paths through which water flows (canals, ditches, streams, and rivers), and related entities such as point features (springs, wells, stream gages, and dams).