As a private, non-profit corporation organized under the laws of the State of Alaska, CIAA engages in salmon enhancement and habitat work throughout the Cook Inlet region. This region includes waters of Alaska in Cook Inlet and Resurrection Bay north of Cape Douglas and west of Cape Fairfield including the Barren Islands and all the region’s freshwater drainages. The drainage area feeding Cook Inlet is over 38,000 square miles and reaches as far north as Denali and east almost as far as Glenallen.  
In the map below, the lightened area depicts the watershed boundary.  The dashed line depicts the boundaries of the Matanuska-Susitna Borough, the Municipality of Anchorage, and the Kenai Peninsula Borough. This political boundary is closely aligned with the watershed boundary.