Junghua Dam (Chinese: 榮華大壩; also spelled Ronghua Dam) is a dam crossing the Dahan River, a tributary to the Tamsui River, in Fuxing, Taoyuan County, Taiwan.
The dam was started in December 1978 and finished in June 1984. The cost was NT$1.83 billion. The Junghua Dam is within the catchment area of the Shimen Reservoir, 27 kilometers upstream of the Shimen Dam in the Dahan River gorge. The dam's main function is to prevent sand from moving downstream and building up as silt in the Shimen Reservoir.
The dam has almost no effective storage capacity, as almost its entire reservoir has been filled by sediment.