Lewis and Clark section 4- HELP!

[ecole]

I am interested in getting some info about the section of L&C between Jordan, Montana and Fort Peck.  Specifically, maps 61 through 64 of section 4- Williston to Great Falls.  This is about 90 miles in the "middle of nowhere".  I'm curious to hear from people who have ridden this section- how are the camping opportunities?  I can see one place that is noted on the map, but it is a few miles off the main road.  I'm thinking we will try to cover the entire distance (we are headed east) from Jordan to Ft. Peck, but you never know...Any info I can get will be a lot more than I currently have, so thanks in advance.