인천연안도서지역 소하천의 조도계수 산정(영흥도를 중심으로)

Estimate of Roughness Coefficient for Stream at Island of Incheon

The roughness coefficients at stage gaging station were calculated and suggested based upon figures and formulae. The results shows that roughness coefficient decreases by increasing the discharge with the exception of no change or increasing in the cases having the tall vegetation and big influence from the stream bank. As a result of the research about the water quality in streams, vegetation and aquatic organisms, the paper suggests the need for management system to protect the organisms in danger of extinction and the need for preserving the diverse species at the estuary that is located in the downstream.