The causation and scope of the flood were analyzed, the river stretch and investigation contents were described. The investigation result was analyzed.

• 分析了产生呼玛河上游“88.；8”洪水的暴雨成因和范围，阐述了洪水调查河段的选择和调查内容，侧重对洪水调查成果进行合理性分析。