Every named stream in the Adirondack Park — the feeder waters that line the High Peaks valleys and fill the ponds.
Dun Brook is a small tributary stream in the Blue Mountain Lake township — mapped but undocumented in state fisheries surveys, and likely too modest in flow or gradient to sustain a trout population year-round. The name appears on USGS quads and in older Adirondack gazetteers, but there's no established trail access or angling history attached to it; it's the kind of waterway you cross on a bushwhack or notice from a dirt road without ever planning a trip around it. Most streams in this category drain wetlands or connect pond outlets to larger drainages — functional hydrology, not destination water. If you're after brookies or a swimming hole, look to the mapped ponds and known tributaries in the Blue Mountain Wild Forest instead.