The Wharekahika River is a 24-kilometer waterway in the Gisborne Region of New Zealand's North Island, flowing east to its mouth at Wharekahika / Hicks Bay on the Pacific Ocean. It originates from the confluence of the Ōweka and Mangapurua streams. The river's course parallels the region's north coast. A key geographical feature for paddlers is the Wharekahika Bridge, which serves as a significant access point. A permanent water monitoring site is located near the Wharf Road bridge, approximately one kilometer inland from the river mouth, and another monitoring site is at the Hicks Bay Road bridge. The site at Hicks Bay Road bridge is noted as being tidal, indicating that paddlers will encounter tidal influence in the lower reaches, particularly near the mouth at Hicks Bay. The river receives tributaries including the Tapirau Stream, Makarae Stream, Mangaomeko Stream, and Mangatutu Stream. The surrounding area is mapped with contours and spot elevations, suggesting varied terrain along the river's path. The river flows through the Northern Catchment area of the Gisborne District Council.