The blue, glacier-fed waters of the Kasilof River, Alaska, United States

The Kasilof River is a scenic waterway on Alaska’s Kenai Peninsula, known for its striking blue, glacially influenced waters. The river begins at Tustumena Lake and flows northwest for roughly 20 miles before reaching Upper Cook Inlet.

The blue, glacier-fed waters of the Kasilof River, Alaska, United States
The blue, glacier-fed waters of the Kasilof River, Alaska, United States


Glacial sediment carried into the river contributes to its distinctive appearance, while the surrounding landscape of forests, wetlands, lakes, and mountains creates a classic Southcentral Alaska setting.

Quick Facts About Kasilof River

  • Location: Kenai Peninsula, Alaska, United States
  • Source: Tustumena Lake
  • Outflow: Upper Cook Inlet
  • Length: Approximately 20 miles
  • Water: Partially glacier-fed and influenced by glacial sediment
  • Highlights: Fishing, boating, wildlife viewing, camping, and scenic landscapes

Kasilof River Map