径流量是水资源规划、利用、管理、调度的重要依据。根据石羊河流域的实测径流资料统计分析得到:流域地表水资源量为15.52×10~8m~3;流域各代表站出山径流的CV值在0.15~0.35之间,年极值比在1.77~14.20之间,呈现出从西向东逐渐增大的空间分布特性。运用加法模型对石羊河流域径流量进行预测,结果表明未来4年内为丰水年。 Runoff is an important basis for water resources planning, utilization, management and dispatching. According to the statistical analysis of the measured runoff data in Shiyang River Basin, the surface water resources in the basin are 15.52 × 10 ~ 8m ~ 3. The CV values ​​of the runoff from the representative stations in the basin are between 0.15 and 0.35, and the annual extrema ratio is between 1.77 ~ 14.20, showing a gradual increase from west to east spatial distribution characteristics. Using the addition model to predict the runoff of Shiyang River Basin, the result shows that it will be a wet year in the next 4 years.