Ho-Ho-Kus Brook is a tributary of the Saddle River (which is itself a tributary of the Passaic River) in Bergen County, New Jersey, in the United States.
The brook originates in Mahwah.
Ho-Ho-Kus Brook joins the Saddle River at the Dunkerhook area of Saddle River County Park. Their confluence marks the border of four Bergen County communities: Ridgewood, Paramus, Glen Rock and Fair Lawn.
While it flows it marks the border between Mahwah and Wyckoff.
Communities
These are the communities that the Ho-Ho-Kus Brook passes along: Mahwah Franklin Lakes Wyckoff Allendale Waldwick Ho-Ho-Kus Ridgewood Glen Rock