Maximum discharge along the river is currently at the reporting a streamflow rate of cfs. This is also the highest stage along the Natalbany River, with a gauge stage of ft at this location. This river is monitored from 1 different streamgauging stations along the Natalbany River, the highest being situated at an altitude of ft, the .
The Natalbany River drains into Lake Maurepas in Louisiana in the United States. It is about 79.5 miles (127.9 km) long.