Abstract: As building a hydropower project on a river abroad with little hydrological data, the flow test is expensive and it is difficult to obtain the runoff data with target water level. In this case, we obtained the flow data and synchronous level of Kayan River using the ADCP flow measurement. Then the roughness was calculated by Manning formula. According to above-mentioned data, we established the relation between the water level and roughness, and calculated the runoff with the characteristic levels. The result was of great importance to the hydropower project on Kayan River and presented an available method for the data extension of the water level and runoff.

Key words: ADCP flow measurement, water level, runoff, roughness

摘要： 在国外水文资料稀缺的河流进行水电工程建设，流量测验耗资比较昂贵，且难以得到目标水位下的流量值。根据卡扬河ADCP测流方法的应用获取的流量资料和同步水位观测资料，用实测资料根据曼宁公式反求糙率，绘制水位糙率曲线，进而建立糙率经验模型公式，对特征水位下的流量进行推求，从而达到水位流量关系序列延展的目的。

关键词: ADCP测流, 水位, 流量, 糙率