Did he dam a named creek without a Corps permit?
Apparently, yes he did.
Several pages long, but here it is. Sorry, may need to cut and paste the link. Hope it works.
http://yosemite.epa.gov/oa/rhc/epaadmin.nsf/filings/6c6ec0f783d2b53985257c7c00214564/$file/cwa%2008%202014%200012%20ao.pdf