A Preliminary Assessment of Evaporation from Surface Water Resources in Sistan Plain

The extremely high rate of evaporation from strategic fresh water Chah- Nime Reservoir and Hamoun Lake greatly reduces utilization of water reservoirs. The amount of evaporative loss from fresh water lake and Chah- Nime reservoirs surfaces in Sistan is about 426.9 × 106 m3 per year from Chah-Nime reservoir and 14250 × 106 m3 from Hamoun Lake. This amount is several times of the total annual water demand needed for water supply (60 × 106 m3) and agricultural use (600 × 106 m3). Therefore, applying a technique to reduce evaporation is greatly necessary. Results showed that using surface water cover technique evaporation can be reduced up to 50 % in comparison to without addition emulsion.

کلیدواژه ها:

Evaporation ، Hamoun Lake ، water loss ، Monolayer Introduction