Fishing Mann Creek Reservoir in Washington County, Idaho

• Overview

  Out in Washington County, Idaho, sits Mann Creek Reservoir. Height above sea level is 2,858 feet. With some 230 acres of water, there is room for a boat but no need of one. The edge covers about 3.3 miles, enough to hold several distinct areas. It lies lower than most water we list in Idaho. Weiser at 11 miles is the nearest place to stop. The nearest city of size is Boise, 65 miles away. The nearest boundary is a fair way off.

• Where to Fish on Mann Creek Reservoir

  We hold no depth figure for this one. Inflow corners move water, and moving water gathers fish. The arms fish better than the open middle whenever the water is up. Survey and observation records for Washington County include rainbow trout, brown trout and flathead catfish. These are county-wide records, so not all of them will be in this water. Fish Mann Creek Reservoir where the bottom changes rather than where it looks deep.

• Seasonal Patterns

  On the long-term average, July reads 72°F and January reads 26°F. Spring and autumn are the strongest, but nothing is truly closed. Some winters give nothing at all, so plan for open water. The hot months push the fishing to dawn and dusk. Expect Mann Creek Reservoir to follow that timing.

• Tackle & Baits

  Whether the bank is open is not something our records settle. Boat access is recorded roughly half a mile away. A parking area is marked roughly half a mile out. Bass water: a Texas-rigged worm near cover, a spinnerbait when you need to cover ground. Bank access can be seasonal on ground like this. Some water is controlled locally without a sign saying so. Failing this one, try Barton Reservoir, 5.3 miles away. Check the position at Mann Creek Reservoir before loading the car.