The Mangapapa River, also referred to as Mangapapa Stream, is a waterway in the Manawatū-Whanganui region of New Zealand's North Island. It flows for approximately 53 kilometers through the subregions of Manawatu-Wanganui. A significant feature for paddlers to be aware of is a 12-meter waterfall located on the river's lower reaches, which constitutes a major hazard requiring careful route planning and scouting. The overall character of the paddling experience is defined by this natural obstacle and the river's length, which suggests potential for multi-day journeys. Access points for putting in and taking out, recommended routes, seasonal water patterns, water quality, and on-site facilities are not detailed. The river's course and the presence of the waterfall are the primary geographical characteristics noted.