Total streamflow across the Androscoggin River was last observed at 14,470 cfs, and is expected to yield approximately 28,701 acre-ft of water today; about 70% of normal. Average streamflow for this time of year is 20,587 cfs, with recent peaks last observed on 2023-12-20 when daily discharge volume was observed at 146,900 cfs.

Maximum discharge along the river is currently at the Androscoggin River Near Auburn reporting a streamflow rate of 6,450 cfs. This is also the highest stage along the Androscoggin River, with a gauge stage of 4.63 ft at this location. This river is monitored from 4 different streamgauging stations along the Androscoggin River, the highest being situated at an altitude of 1,249 ft, the Androscoggin River At Errol.

The Androscoggin River runs through New Hampshire and Maine, covering a length of 178 miles. It was once one of the most polluted rivers in the country due to the paper mills that lined its banks, but since the 1970s, extensive cleanup efforts have improved the water quality. The river's hydrology is influenced by several dams, including the Livermore Falls Dam, the Gulf Island Dam, and the Berlin Dam, which provide hydropower and flood control. The river also has several reservoirs, including the Umbagog Lake, the Richardson Lake, and the Aziscohos Lake. Recreational activities such as fishing, hiking, and camping are popular along the river, and the river also supports agricultural activities like irrigation and farming.