| Manor Kill | |
| Pushpin Map: | New York Adirondack Park#USA |
| Pushpin Map Caption: | Location of mouth within New York |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | New York |
| Subdivision Type3: | Region |
| Subdivision Name3: | Central New York |
| Subdivision Type4: | County |
| Source1 Location: | Northeast of Manorkill |
| Source1 Coordinates: | 42.4167°N -74.2888°W[1] |
| Mouth: | Schoharie Reservoir |
| Mouth Location: | Southeast of Gilboa |
| Mouth Coordinates: | 42.3804°N -74.4326°W |
| Mouth Elevation: | 343feet |
| Progression: | Manor Kill → Schoharie Reservoir → Schoharie Creek → Mohawk River → Hudson River → Upper New York Bay |
| Basin Size: | 34.4mi2[2] |
| Tributaries Right: | Bear Kill |
| Waterfalls: | Manor Kill Falls |
Manor Kill is a river in Schoharie County in the state of New York. It begins northeast of Manorkill and flows westward before flowing into the Schoharie Reservoir southeast of Gilboa, New York. Manor Kill Falls is located on the creek where it passes under Prattsville Road (County Route 39). Since it drains into the Schoharie Reservoir, it is part of the New York City water supply system.
Manor Kill's watershed receives an average 36.8inches of precipitation annually. Most of it is concentrated in seasonal events such as summer thunderstorms, remnants of hurricanes later in the year or rain-on-snow events in springtime. This pattern of precipitation, combined with the Manor Kill watershed's slopes and low drainage density, results in flashiness, as the stream and its tributaries rise and fall quickly in response to storm events. The forests that cover much of the watershed tend to mitigate this somewhat.[2]
The United States Geological Survey (USGS) maintains one stream gauge along Manor Kill. The station, in service since July 1986, is located 1.2miles upstream from the mouth, 0.5miles east of West Conesville, had a maximum discharge of per second on August 28, 2011, as Hurricane Irene passed through the area. It had a minimum discharge of per second on August 28–31, 1993, September 1–2, 1993 and September 6–8, 1995.[3]
The village of Conesville was previously known as "Stone Bridge" because of the great arched stone bridge that stood where the present bridge crosses the Bearkill. This bridge was washed away in a flood of 1874.