Analysis on hydrologic characteristic of Qianhe basin

Based on hydrological data of Qinyang hydrologic station and 12 rainfall stations of 38 years, applied the method of hydrologic statistics, the variation distribution laws are analized such as sediment, rainfall and evaporation. The result shows that hydrologic phenomena have this feaure of average variation interval about from 5 to 10 years. This paper provides the adequate basis for exploting its resources resonably and resolving the issue of enviromental pollution and water resources shortage in Qianhe basin.