Montana Fly Fishing
Flathead Lake

Flathead Lake

Flathead Lake in Northwest Montana
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Flathead Lake is the largest body of natural water found west of the Continental Divide. It is a beautiful lake, surrounded by the tall and impressive Mission Mountains on the east and the smaller Salish Mountains to the west. The broad Flathead Valley stretches off on the north and south sides of the lake. The town of Polson lies on the south shore of the lake, while the popular and artsy town of Bigfork lies on the northeast corner.

Flathead Lake is immensely popular for pleasure boaters. Due to the lakes size and beauty, sailboats are very popular on the lake, along with countless pleasure boats of all kinds. The lake itself is ringed by summer homes of increasing size and elegance, as more and more individuals from outside Montana build exotic homes on the lake.

The lake itself offers excellent fishing, but not necessarily for fly fishing. The fish species in the lake consist primarily of lake trout and whitefish, with some rainbow trout, northern pike and bull trout also found. The lake trout in Flathead Lake can reach monstrous sizes, frequently exceeding twenty-pounds. An average lake trout is considered to be in the three to eight pound range and are caught quite frequently.

Fishing for lake trout during most of the year requires a boat with trolling gear, as the fish will be found very deep in the lake. The exception to this occurs in the fall, in September, when the trout come up near the shoreline of the lake, providing enticing fly fishing opportunities. Stout gear and large streamers, fished just off the shoreline, especially in shallow bays, up to 10 feet of water, can grab some very large trout in unlikely places. While a fisherman can conceiveably wade fish during this time, a boat is really still needed to reach these fly fishing spots.

Flathead Lake in Northwest Montana
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Fishing for whitefish in the lake is also quite popular. The whitefish in Flathead Lake can also be very sizable, frequently topping 10 pounds. As there is an abundance of both whitefish and lake trout in Flathead Lake, a fisherman should not feel guilty about keeping some at the end of the day. Just be sure to release any bull trout that may accidentally be caught.

A dam exists on Flathead Lake which manages its water levels. While the dam did not create Flathead Lake, it does regulate the level of the lake, which receives the bulk of its water from the Flathead River and the Swan River. As a result, during low water years later in the summer, parts of the shoreline of Flathead Lake can become exposed, leading to some headaches for boaters at some of the boat ramps.

Overall, Flathead Lake is one of the premiere fishing lakes in Montana. It is popular for both fishing and pleasure boating, and its beautiful setting makes any day spent on the lake a rewarding one.

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