Mantrap Lake (S) Public Water Access Site features a shallow earthen boat ramp located on the south end of the north arm of this 1,618-acre lake in Hubbard County.

This is the secondary access point to Mantrap Lake; the main access with two concrete ramps is located on the south side of the west basin and offers more developed facilities.

Both ramps provide public boat launch access for fishing and paddling on this popular recreational lake.