Technical assessment of watershed operating steps in sologan aquifers basin

In spite of passing more than 45 years of operating watershed projects inside the country and day increasing budgets of such projects, we see ascendant going of soil erosion, natural resources annihilation and dazzling and painful arising from them that show, we faint to operate and fail in protecting of natural resources. Therefore about watershed projects involved many problems and manageable agents of the projects should be power full assessment can have suitable place and can determine efficiency and accessibility of the purpose. The (sologhan) aquifers basin with 20571 ha area, is one of basins that watershed operation carried out inner in 2000.
In this investigation to assess effects of the of the operation after collecting statics and necessary information and standing correctness and accuracy of meteorology and hydrology's data, we used double mass curve, annual comparisons, hydro graph, hydrologic analysis, inquiring amount of sediment in dry and moist periods, drawing sediment graph, studding amount of sediment iv similarity rains before and after projects operation.
Double mass curve shows proving effects of this operation on amount of runoff and sediment hydrologic curves results shows proving effects of watershed on the basins hydrologic reaction, that in regards to amount of rain Tranquillized namely in regard to similarity rains runoff decrease. As well as amount of suspended load has been decreased from 47892.56 to 22365 tons in one year by operating this project and resulted Debbi decrees sediment. Above results shows proving effects of watershed projects.