| Flynn Brook | |
| River | |
| Country | United States |
|---|---|
| State | New York |
| County | Delaware |
| Source | |
| - coordinates | 42°06′21″N74°52′06″W / 42.1058333°N 74.8683333°W |
| Mouth | Pepacton Reservoir |
| - elevation | 1,280 ft (390 m) |
| - coordinates | 42°05′36″N74°52′28″W / 42.0934208°N 74.8743275°W Coordinates: 42°05′36″N74°52′28″W / 42.0934208°N 74.8743275°W [1] |
  Location of the mouth of Flynn Brook in New York  Flynn Brook (the US) | |
Flynn Brook is a river in Delaware County in New York. It flows into the Pepacton Reservoir east of Downsville.