Maximum discharge along the river was observed at the
Marias River Near Shelby Mt
with a streamflow rate of 1,760 cfs.
This is also the deepest point on the Marias River, with a gauge stage of
4.93 ft.
This river is monitored from 3 different streamgauging stations along the Marias River, the highest being perched at an elevation of 3,099 ft, the
Marias River Near Shelby Mt
.