The USGS gauge on the Oswegatchie in Harrisville provides an "approximation". The benchmarks below have many variables, so proper assessment is necessary
Put In rapid marks the start of the Downerville to Russell section, offering paddlers an immediate entry into the river's flow. While specific details are limited, the rapid likely presents initial navigational challenges that set the tone for the downstream run. Paddlers should be prepared for potential technical maneuvers and maintain situational awareness from the moment they enter the water.