Re: Road Trip to Montana in August
Unfortunately, as beautiful as GNP is, fishing is not this park's strong suit. Most of the lakes are OK, but the streams, especially on the west, side are very cold and low in nutrients and are almost barren.
The only stream I would recommend in GNP is the Belly River on the north east side. It is a fun stream with plenty of hungry rainbows in the 10"-13" range. It gets virtually zero fishing pressure. Take bear spray, this is grizzly country.
Interestingly, the water in the Belly River winds up in Hudson Bay.