• Rafters on the Alganak Wild River

    Alagnak

    Wild River Alaska

Hydrologic Activity

Riverbank erosion on the Alagnak

Increased erosion resulting from increased motorboat activity on the Alagnak is a concern of river managers.

USGS-WRD Photo

Erosion of riverbanks from river currents and waves is a natural process. However, increased wave action due to motorboats has become a serious concern over the years with an increase in visitation to the Alagnak Wild River. Actively eroding and denuded riverbanks are especially vulnerable to further wave action as high banks composed of loose sand and gravel are undercut. Visitors using motorboats can help reduce continued erosion by significantly slowing their craft in areas where erosion is evident.

Did You Know?

The Alagnak Wild River offers some of the best sport fishing in all of Alaska.

The Alagnak Wild River’s extraordinary rainbow trout, char, grayling, and abundant salmon are some of the most attractive sportfish in the world, and the river has become the most popular fly-in fishing location in all of southwest Alaska.