Fishing at Hidden Lake, Jefferson County, Montana

• Overview

  Jefferson County, Montana, is where Hidden Lake sits. It stands 8,186 feet above sea level. Surface area runs to about 10 acres — small enough to read in one session. Boulder at 11 miles is the nearest place to stop. Beyond it, Clancy at 11 miles and Montana City at 16 miles. The nearest boundary is a fair way off. Nothing about the setting is dramatic, and that suits the fishing.

• Where to Fish on Hidden Lake

  Nothing in our records gives a depth for this one. Look for the band where the shallows give up and the bottom falls away. The shallow end warms first and pulls fish in ahead of the rest. Species logged across Jefferson County include rainbow trout, brook trout, brown trout, cutthroat trout and longnose sucker. The county list is broader than any single water. On Hidden Lake the first feature you find is usually worth a session.

• Seasonal Patterns

  Averages move between 19°F in January and 55°F in July. Cold locks it up for a good stretch each year. Look for the thaw near early May; the fishing lifts straight after. Ice clears near early May and comes back about mid November in a typical year. Fish feed hardest at the start and the close of the open season. The season on Hidden Lake follows the weather closely.

• Tackle & Baits

  Nothing we hold confirms whether access is permitted. There is no recorded infrastructure here; expect to find your own way in. For the trout, small spinners and a box of nymphs cover both approaches. Sort the permit out before you load the car. Signs go up and come down, so check on the day. Glenwood Lake sits 1.1 miles off and takes the overflow. For Hidden Lake, the notice at the access point is the final word.