Rainbow Lake near Plains: Fishing Spots, Seasons and Access

• Overview

  Rainbow Lake is a Sanders County water, in Montana. It stands 3,583 feet above sea level. The water covers some 183 acres, so pick a bank rather than trying to cover it all. Some 3.3 miles of bank gives room to move when the wind turns. Few waters listed in Sanders County are bigger. Supplies mean a trip to Plains, 7.3 miles off. Thompson Falls is 27 miles away, with Polson at 30 miles. This one is safely inside the county line.

• Where to Fish on Rainbow Lake

  Depth here is unknown, so count the lead down before committing. The shallow end warms first and pulls fish in ahead of the rest. Where the bottom changes texture, fish gather; find that line. Species logged across Sanders County include rainbow trout, largemouth bass and smallmouth bass. At least one recorded species is protected in parts of its range; read the local rules before targeting anything. At Rainbow Lake light and wind decide more than tackle does.

• Seasonal Patterns

  Expect August near 62°F and January near 23°F on the long-run figures. Winter puts a hard lid on this one. The lid usually goes in early April, which opens the strongest weeks of the year. The water is typically free of ice between early April and late November. Just after the ice goes and just before it returns, the fishing lifts. On Rainbow Lake the same rules apply, with local timing.

• Tackle & Baits

  Nothing on record says whether the bank is open or closed. Records list it as a natural water body rather than an impoundment. You can launch: the ramp is half a mile away. You can camp half a mile off, which suits an early start. For the bass here, soft plastics worked slow along cover and a spinnerbait for searching do most of the work. Ask in the nearest town if you are unsure. Check whether bait restrictions apply before you buy any. Baldy Lake sits 6.8 miles off and takes the overflow. Treat access at Rainbow Lake as something to verify.