Sawmill Creek
Rumor has it that this creek has been run only once. It drops like a stone into Pequannock from a pair of ponds up on a hill. You can see it through the trees from Rt 287, just south of the Rt. 23 exit. The gradient is about 800 fpm, but the run is only about 1/2 a mile long. It's a hike in creek with a parking lot at the bottom. But at least that way you save a little time scouting. It's all on public land.
There is no online gauge for this run
There isn't any gauge for this run. Basically, if everything is way too high and going up, and it's still raining very hard, this is probably running. Especially if there's snow on the ground.
 Onsite gauge Photo
Just hike up the hill until you're tired, then put on.
 

Make sure you take out in the pool after the last big drop.
Scout before you put on!.

After this the creek drops into a steep, bony, class V rapid which goes through a fence and then into a small tunnel under Rt. 287 (probably at least 100 yds long)
This may be the steepest thing that's been run so far in NJ