Maximum discharge along the river is currently at the reporting a streamflow rate of cfs. This is also the highest stage along the Chadakoin River, with a gauge stage of ft at this location. This river is monitored from 1 different streamgauging stations along the Chadakoin River, the highest being situated at an altitude of ft, the .
The Chadakoin River is a 7.8-mile-long (12.6 km) stream that is a tributary of the Conewango Creek. The Chadakoin lies entirely in Chautauqua County in Western New York in the United States.The stream drains an area of 192 square miles (500 km2), covering much of Chautauqua County. The creek begins at the southern end of Chautauqua Lake. Its watershed is bounded to the north by the Chautauqua Ridge, a continental divide that results in the water flowing eventually to the Gulf of Mexico rather than the nearby Great Lakes.