It would take you years, if not a lifetime, to explore all the trout water within 200 miles of the North Lake Tahoe area.
Aside from the Truckee, the North Yuba and Carson are fairly close (i.e. under seventy or eighty miles).
A little further afield you have the various forks of the Stanislaus, American river drainage, East & West Walker, upper parts of the North and Middle Feather.
A lot depends on what sort of experience you want. Do you want to be near civilization, do you want to camp, do you want to backpack into a remote area? Fast-action small stream fishing in a secluded area, or a chance for bigger fish but possibly with more crowds?