介绍了乌苏里江流域自然地理及气象概况，主要支流的水文特征，分析了乌苏里江的洪水组成及特点。
An outline introduction to the physical geography, meteorology and hydrologic character of its main branch was presented. The combination of flood and its characteristics were analyzed.
分析研讨了洮河流域的流域特征、主要自然地理要素对水文的影响，以及降雨径流要素的变化规律。
Analyze the hydrologic characteristics of tao river basin, the influence on the hydrology progress imposed by physiographic factors, and variation of the relationship between rainfall and runoff.
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