Deadwood Put-in--Deadwood Reservoir (take a left near SF Canyon Put-in).
Take out: 10 miles up the reservoir road on west side of the river.
They just pumped it up to like 1,200. Good overnighter or one-day mission, pick your poison.
On the way, hit the Bliss wave in Bliss, Idaho off I-84 (since you're driving that way anyhow).
Other options: Kootenai in Montana. Park-n-huck combined with the Superwave. Koot at Libby should be betweeen 10,000 and 18,000.
Don't forget about BC: Ashlu, Skook, Thompson.....etc....