Legalities of prospecting on forest service lands Options

[GNR]

Hello!

This is my first post on this forum, but I have been prospecting and mining for several years out in Nevada. I recently moved to colorado (summit county) and have been looking at staking some new claims out here. I have identified a few open to entry locations on forest service land, which have rivers or streams running through them. They all seem like ideal places to potentially prospect, but I am getting conflicting statements on what level of prospecting is legally allowed.

essentially, what im trying to figure out, is if the following methods are allowed, or if they require permits.

panning (i think this is allowed)

Sluicing (i believe this is allowed as well)

High banking ( this is what I really want to do, as I have a nice trommel sluice and pump setup. I believe that I Saw a post on another forum that says this is allowed, as long as there is a settling pond used before the water goes back into the waterway. But i am unclear on weather this would involve a permit or notice)

Dredging (ive never done this, but i Imagine it would be pretty effective. Regardless I dont have a dredge, so its not a priority, i think it requires a permit too)

So thats where I am currently at. I went out to one of the locations today with a small sampling pan and tested some bank gravel, got about 10 colors out of it, so I think there is some good ground to be explored. If anyone could help clarify these issues for me, that would be wonderful!