Nushagak Bay /ˈnuːʃɪɡæk/[1] is a large estuary covering over 100 km2 in southwest part of the U.S. state of Alaska.
It opens to Bristol Bay, a large body of water in the eastern Bering Sea north of the Alaska Peninsula.
It is home to the area's largest city, Dillingham, and the bay hosts one of the world's last great sustainable sockeye salmon fisheries.
Bristol Bay residents have historically valued the estuary resources for both subsistence gains and commercial profits.
This lower diversity of Nushagak Bay is most likely due to its low salinity, high turbidity, and silty sediments.