Mongaup Put-in provides access to the Mongaup River on NY Route 97, serving as the starting point for floats downstream toward Sparrowbush.

The access features a dirt path with rocks leading to the river and includes a seasonal portable restroom, though there is no boat ramp.

This location marks the beginning of a popular 3-mile float that includes Class II rapids immediately at the access point, making it suitable for paddlers and tubers seeking a 1. 5-hour river experience.