| Runyon Watershed | |
| Pushpin Map: | USA New Jersey Middlesex County#New Jersey#USA |
| Pushpin Label Position: | left |
| Pushpin Map Caption: | Runyon in Middlesex County, New Jersey |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | New Jersey |
| Subdivision Type2: | County |
| Subdivision Name2: | Middlesex |
| Subdivision Type3: | Township and Borough |
| Subdivision Name3: | Old Bridge and Sayreville |
| Elevation Ft: | 30 |
| Coordinates: | 40.4342°N -74.3322°W |
| Blank Name: | GNIS feature ID |
| Blank Info: | 879863 |
| Unit Pref: | imperial |
The Runyon Watershed is a reservoir system located in Old Bridge Township, New Jersey, United States, just south of Sayreville. It is operated by the Middlesex Water Company. The 1100acres watershed area was first established in the late 1800 when it was purchased by the city of Perth Amboy, which developed a reservoir and waterworks in the 1920s, and turned over management to the company in 2003.[1] The area is protected, with more than 500 acres of the tract are wetlands that are from development by the state's 1990 Watershed Moratorium Act[2] [3] [4] [5] [6] A weather station in Runyon recorded a high temperature of 110 °F (43 °C) on July 10, 1936, setting the record for the hottest temperature ever recorded in New Jersey.[7]