Slippery Rock Creek - 1. Kennedy Mill (Frew Mill Rd., SR 1012) to Eckert's Bridge (PA)
Approximate - nearest available gauge. Use as general reference only.
For the extra flatwater, if you put in here, you get a spanky slopy drop to begin your river trip. The drop under the bridge is pretty scrapy at levels below about a foot on the stick gauge. It's a cool drop at higher levels, but watch out for the eddy on river left--you can get shoved into a rock and woody debris and stuff.
Lat/longitude coords for putins, takeout, and rapids are verified by GPS.