| Knapp Brook | |
| Pushpin Map: | New York Adirondack Park#USA |
| Pushpin Map Caption: | Location of the mouth within New York |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | New York |
| Mouth: | Mohawk River |
| Mouth Location: | West Schuyler, New York |
| Mouth Coordinates: | 43.0881°N -75.1422°W[1] |
| Mouth Elevation: | 384feet |
Knapp Brook is a river that flows into the Mohawk River by West Schuyler, New York.[2]
Streambank erosion on Knapp Brook contributes sediment loads into the Erie Canal. Periodic dredging to restore adequate canal navigational depth causes further siltation and affects fish habitat.[3]