grand river conservation authority

Role of forest to cycle operation [of] water started from role of coronet of menyimpan irrigate intersepsi. [In] climax forest of intersepsi can reach number 25 – 35 % from annual rain falling and [in] Pine forest can reach 16-20 % from annual rain falling ( Sri Astuti et-al, 1998).

second Uppermost role which also often become the source of cause of kekawatiran of society [is] evapotranspirasi. Some anticipated factor share to level of evapotranspirasi for example [is] sun radiasi, temperature, dampness of air, speed of wind and availability of water in land;ground or [is] often referred [as] is clammy [of] land;ground. Clammy [of] land;ground share to the happening of evapotranspirasi.