Every named stream in the Adirondack Park — the feeder waters that line the High Peaks valleys and fill the ponds.
Whiteface Brook drains the eastern slopes of Whiteface Mountain and runs through Lake Placid village before emptying into Mirror Lake — most visitors cross it without noticing, though it's the reason the Olympic ski jumps and much of the village sit where they do. The upper reaches hold native brook trout in pocket water above the developed corridor; below town it's a bedrock-and-culvert affair threading between Route 86 and the Mirror Lake shoreline. The brook is Lake Placid's working stream — stormwater management, snowmelt route, the drainage spine of a resort town built in a narrow valley. You'll hear it before you see it if you're walking Main Street after a hard rain.