| Baysh Dam | |
| Location Map: | Saudi Arabia |
| Coordinates: | 17.6661°N 42.6576°W |
| Country: | Saudi Arabia |
| Location: | Baish, Jizan Region |
| Purpose: | Flood control, irrigation, groundwater recharge |
| Construction Began: | 2003 |
| Owner: | Ministry of Water and Electricity |
| Dam Type: | Gravity |
| Dam Crosses: | Wadi Baysh |
| Dam Length: | 340m (1,120feet) |
| Dam Height Foundation: | 106m (348feet) |
| Dam Height Thalweg: | 74m (243feet) |
| Dam Width Base: | 79.5m (260.8feet) |
| Dam Volume: | 675000m2 |
| Spillway Type: | Overflow |
| Spillway Capacity: | 8186m3/s |
| Res Capacity Total: | 192750000m2 |
| Res Catchment: | 4843km2 |
| Res Surface: | 8km2 |
The Baysh Dam is a gravity dam on Wadi Baysh about 35km (22miles) northeast of Baysh in the Jizan Region of southwestern Saudi Arabia. The dam has many purposes to include flood control, irrigation and groundwater recharge. The dam was constructed between 2003 and 2009. At 106m (348feet) in height, it is the tallest dam in Saudi Arabia.[1] It was constructed by Yüksel İnşaat A.Ş. and is owned and operated by the Ministry of Water and Electricity.[2]