Aleutian Islands Coastal Resources Inventory and Environmental Sensitivity Maps: HYDRO (Hydrography Lines and Polygons)

This data set contains lines and polygons representing coastal hydrography used in the creation of the Environmental Sensitivity Index (ESI) for the Aleutian Islands.This data set comprises a portion of the ESI for Aleutians East Borough and Aleutians West Coastal Resource Service Area (CRSA). The HYDRO data layer contains all annotation used in producing the atlas. The annotation features are categorized into three subclasses in order to simplify the mapping and quality control procedures: GEOG or geographic features, SOC or socioeconomic features, and HYDRO or water features. These data identify the marine and coastal environments and wildlife. The ESI data include information for three main components: shoreline habitats, sensitive biological resources, and human-use resources.