THIS POST HAS BEEN EDIT...PROSPECTING ON STATE FOREST LAND IS A NO-GO
Nothings ever cut and dry in these times...First and foremost, you need to down load, read and reread about 15 times from front to back, Washington state's "fish and gold pamphlet" it's 42-44 pages.... some areas and certain activities will require certain "permit/s" having a copy of the pamphlet on hand is the basic "permit" for panning or sluicing/non-motorized non-gravitational fed high banking/rocker box use with equipment having a rifle area under 3 sq. ft.
THE 'FISH AND GOLD PAMPHLET STATES NO GOLD PANNING/PROSPECTING ON STATE FORESTS
A knowledge and understanding of types of land and their land managers is warranted...Waddell creek is mostly within the "Capitol forest" which is- state trust land, and administrated/ managed by the state of Washington DNR.
Washington is liberal with their state land trusts in/with access and recreation for the public compared to a host of other states land trusts...That said the state land trusts main purpose is to have those state lands make a PROFIT/MONEY, of which then said profits goes to schools, certain organizations and communities...
"recreational prospecting" is VERBOTTEN-A NO GO on state trust lands!...small scale placer mining is verbotten...not enough profit in it for the state, so no (small/ little guy) claims on state trust lands...washington has a 11% royalty on mineral resources produced on state land...large scale mining is allowed with a slew of bonds and permits...They want the big guns mining for the big money...the small scale stuff isn't worth their time and effort!
If your going to park a vehicle at any or the slightest amount of time on State trust land you'll need a "Discovery Pass"...
from the Cascades west is mostly glacial till from the Cascades so the gold is spread out and ground down, don't expect nuggets, pickers will be far and few... the gold will be fine/small and spread out, so any creek could likely produce.
Washington has a slew of gold mining/prospecting clubs I'd recommend joining one or (two) usually there yearly dues are dirt cheap!
One can "rock hound" on state land, with certain restrictions such as, not near a creek,
or in it, with the possibility of finding a gold nugget/ picker...
One can metal detect state forests even...
gold panning is not allowed.
One can metal detect
HH to you.