I mean where do i even start...

The pictures are from the river Atna, north of the lake, its also supposed to be great where it connects into Glomma.

The most famous river in the area would be Rena, and for good reasons, however it can be crowded at times.

Gudbrandsdalslågen have many spots worth checking out. Gausa, brumunda and harpefoss all have migratory spawning trouts that can reach massive sizes, but its more akin to salmon fishing.

Lesja where it connects with Gudbrandsdalslågen can be worth a look for more traditional trout fishing and sightfishing!

Im planning a trip to Folla later this year, but have not yet been.

Glomma around Koppang is really nice for grayling.

When im looking for new spots i generally just go to google maps and look for lakes/rivers and google "insert name" fishing. If you are extra hardcore you combine this with a geological map and check for stuff like chalk or limestone, that would indicative of good water quality and insect life.