| Betty Brook | |
| River | |
| Country | United States |
|---|---|
| State | New York |
| Source | |
| - location | Delaware County, New York |
| Mouth | West Branch Delaware River |
| - location | Hobart, New York, Delaware County, New York, United States |
| - coordinates | 42°20′36″N 74°44′03″W / 42.34333°N 74.73417°WCoordinates: 42°20′36″N 74°44′03″W / 42.34333°N 74.73417°W |
| Basin | 9.04 sq mi (23 km2) |
Betty Brook flows into the West Branch Delaware River by Hobart, New York.