Whinnimic Falls is a waterfall in the headwaters of Lemah Creek in the Alpine Lakes Wilderness Area. It is set in a narrow valley below Lemah Mountain. The falls are one of two in the valley, the other being the smaller Upper Lemah Valley Falls. Whinnimic Falls plunges about off a vertical cliff, onto a valley floor dotted with ponds and grassy meadows. The stream heads in two tarns and the remains of a small glacier.