[Journal entry for April 17, 2014; Minisceongo Creek, Harriman State Park, New York]. In the afternoon, I walked along Minisceongo Creek in Harriman State Park. I parked at the pullout on Route 106, where the Suffern-Bear Mountain Trail (SBM, blazed in yellow) crosses that highway.  I first walked downstream from the bridge.  The creek is running strongly, with lively cascades, flumes where it flows across flat rock ledges, and small waterfalls.  A few bushes along its banks have begin to bud, and new green grass has begin to sprout from otherwise yellow hummocks, but mostly the land looks pretty bare.  I then walked upstream of Route 106.  The land is flatter there and the creek is slower, with several wide, still pools.  I spotted two Northern Watersnakes as the splashed into the pools at my approach.  I walked above a small gorge, with sub-vertical mossy rock walls, that hosts a small waterfall.  I crossed the bridge at the Beaver Pond Campground access road, and then walked further along the stream to Lake Welch Dam.  The dam is a substantial concrete structure, a hundred yard long and thirty feet or more high.  Water was cascading over a wide spillway, forming an intricate herring-bone pattern on the sloping concrete surface.  I walked the highway back, taking one short detour to view a pair of Mallard Duck, floating in the creek. 1:30.