You will be expected to have completed field work by then. The final report is due May 7. Your paper will be from 7 to 10 double spaced typed pages, and will follow a recognized reference system. Your paper assignment can make use of local sets of resources. Other topics are possible, with approval of your instructor.
Pierce County makes action plans for local watersheds.
The one for the watershed we inhabit is here. A U.S. Army Corps of Engineers page describing the dam is here.