TheKisco River is acreek that runs through theMount Kisco, New York area. It is formed by the forks ofChappaqua Brook and an unnamed stream. It follows a 3.3-mile (5.3 km) winding course before emptying into theNew Croton Reservoir at Lake Road Bridge in the town ofNew Castle near thehamlet of Stanwood and eventually into theAtlantic Ocean via theCroton River, theHudson River, andNew York Harbor.[1]
Its name is derived from the village of Mount Kisco, which the river flows through. The name of Mount Kisco is further derived from "seesquee", which may also be written as "cisqua", which is theAlgonquin word for "muddy place", referring to the marshlands in the area.[2]
The Kisco River begins at the highlands of Arthur W. Butler Memorial Sanctuary, and travels westward inNew Castle until it feeds into Wallace Pond at Leonard Park in Mount Kisco. It then runs along the "Early Settler's Trail", and passes the former location of the Spencer Optical Factory which is now a nature trail. After this it runs underneathRoute 133. It then runs through "Riverwoods", a town house complex. It continues past the Bedford Yeshiva Farm Settlement, a smallyeshiva. The Riverwoods wastewater treatment plant discharges itswastewater into the river at this point. It then passes underneath Croton Lake Road and empties into theMuscoot Reservoirat its widest point of 1,100 feet (340 m).[clarify]
Several storm drains empty into the river along its course. It runs through a primarily developedwetland area.