Keyhole Reservoir

Where it is

Keyhole Reservoir sits in Crook County, Wyoming, covering about 8,862 acres. Season and conditions decide the productive water; the map is the starting point.

Seasonal pattern

Spring. Warming water pulls largemouth toward shallow, protected areas where they stage and spawn; the quickest-warming pockets lead.

Summer. Heat pushes fish off the shallows toward depth and shade; work the cooler ends of the day.

Fall. As water cools, forage and bass return toward shallower water; movement is wide, so covering water pays.

Winter. Cold water settles fish deep and slow; patience and a subtle presentation are the more dependable choice.

Key structure

• Creek and cove mouths that funnel fish and bait
• Weed edges and the clean lines along them
• Inside turns where a bank changes angle
• Submerged wood, brush, and laydown cover

The calendar decides which of these is worth time on a given day.

Forage

Baitfish and panfish drive the forage on Keyhole Reservoir; the lake holds multiple species and largemouth follow the bait when conditions favor them.

Access

Access to Keyhole Reservoir is generally public; check water levels and conditions before launching.

Regulations

Check current state and local regulations before fishing; limits and seasons can change.