Martin Thompson Reservoir in Weston County: How and When to Fish It

• Overview

  Wyoming holds Martin Thompson Reservoir, in Weston County. The water sits 4,724 feet up. It lies lower than most water we list in Wyoming. Newcastle sits 7 miles from the bank. It is 236 miles to Fort Collins, the nearest city. A county line runs close by, so local bylaws can differ within a short drive. Conditions change the water more than the calendar does.

• Where to Fish on Martin Thompson Reservoir

  Depth figures are not published for this one. The arms fish better than the open middle whenever the water is up. The old creek line under the surface is the feature worth finding. Fish documented in Weston County include green sunfish, smallmouth bass, brown trout and walleye. Those are county-wide records, so not every one of them will be in this water. Martin Thompson Reservoir fishes better once you know its edges.

• Seasonal Patterns

  Expect July near 68°F and January near 21°F on the long-run figures. The year splits cleanly: hard water, then open water. Count on hard cover from midwinter, and open water from early April. On the long-run averages the water opens up around early April and starts locking again about late November. Early summer and early autumn carry the open-water season. Plan around that when you fish Martin Thompson Reservoir.

• Tackle & Baits

  We have no record of the rules that apply on this bank. No launch point is recorded nearby, so this is a bank water unless you carry a boat in. A small crankbait along the drop and a worm in the thick stuff cover the bass. Where access is informal, keep it that way by behaving. Night access is frequently treated as a separate matter. Spencer Reservoir sits 6.8 miles off and takes the overflow. Confirm access to Martin Thompson Reservoir locally before you travel.