Foster Reservoir in Crook County: How and When to Fish It

• Overview

  You will find Foster Reservoir in Crook County, Wyoming. It stands 3,750 feet above sea level. At 20 acres it is the sort of place you fish for an evening rather than a day. It lies lower than most water we list in Wyoming. Sundance lies 34 miles from the water. The nearest city of size is Billings, 196 miles away. It sits well inside the county, so one set of rules covers it.

• Where to Fish on Foster Reservoir

  No depth figure appears in our records, so the bank has to tell you. Points where the flooded channel swings in are the reliable ones. Rip-rap along the wall holds fish that the open bank never does. Species logged across Crook County include brown trout, common carp and white sucker. County records show what lives in the area; the local agency holds the water-by-water list. The shape of Foster Reservoir rewards a slow walk along one bank.

• Seasonal Patterns

  July runs about 71°F on average, January about 21°F. The middle months are generous; the ends are demanding. Hard cover is dependable here; it goes around late March. The lid tends to go about late March and return around early December. The strongest runs come at either end of the open season. Time your trip to Foster Reservoir by conditions rather than dates.

• Tackle & Baits

  Who may fish here is not settled in anything we hold. Nothing formal is recorded here: no ramp, no car park, no marked path. Trout here take small spinners, spoons and, where fly water allows, a nymph or dry. Season dates differ by species, so read the table. Close seasons apply to some species and not others. If the gate is shut, Bush Reservoir at 4.3 miles is the nearest alternative. Where Foster Reservoir is concerned, a local answer beats a written one.