Yellowtail Afterbay Reservoir

Overview

Yellowtail Afterbay Reservoir is a smaller downstream reservoir below Yellowtail Dam near the Montana–Wyoming border. It provides more controlled water conditions and steady flows, making it a quieter alternative to the main Bighorn Lake.

Fishing Overview

Fishing at Yellowtail Afterbay focuses on trout and warmwater species that move through the controlled flows below the dam. The afterbay is often more predictable than larger reservoirs, making it approachable for a wide range of anglers.

Access and Amenities

Access is available near the dam and downstream areas, with maintained roads and limited launch facilities designed for smaller boats.

Fees: Day-use or parking fees may apply at some federally managed access areas.

Regulations and Notes

Regulations may differ from nearby waters due to dam operations and fish movement. Anglers should verify current rules before fishing.