Total streamflow across the Nacimiento River was last observed at 80 cfs, and is expected to yield approximately 158 acre-ft of water today; about 106% of normal. Average streamflow for this time of year is 75 cfs, with recent peaks last observed on 2023-03-11 when daily discharge volume was observed at 14,150 cfs.

Maximum discharge along the river is currently at the Nacimiento R Bl Nacimiento Dam Nr Bradley Ca reporting a streamflow rate of 69.6 cfs. However, the streamgauge with the highest stage along the river is the Nacimiento R Bl Sapaque C Nr Bryson Ca with a gauge stage of 7.81 ft. This river is monitored from 2 different streamgauging stations along the Nacimiento River, the highest being situated at an altitude of 819 ft, the Nacimiento R Bl Sapaque C Nr Bryson Ca.