Saco River River Levels

Last Updated: December 4, 2025

The Saco River is a 136-mile long river that flows through New Hampshire and Maine.


Summary

Total streamflow across the Saco River was last observed at 1,773 cfs, and is expected to yield approximately 3,517 acre-ft of water today; about 41% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 4,366 cfs, with recent peaks last observed on 2011-08-29 when daily discharge volume was observed at 56,600 cfs.

Maximum discharge along the river is currently at the Saco River At Cornish reporting a streamflow rate of 1,300 cfs. This is also the highest stage along the Saco River, with a gauge stage of 3.12 ft at this location. This river is monitored from 2 different streamgauging stations along the Saco River, the highest being situated at an altitude of 486 ft, the Saco River Near Conway.

River Details

Last Updated 2025-12-04
Discharge Volume 3,517 ACRE-FT
Streamflow 1,773.0 cfs
-254.0 cfs (-12.53%)
Percent of Normal 40.61%
Maximum 56,600.0 cfs
2011-08-29
Seasonal Avg 4,366 cfs
       
River Streamflow Levels
Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Saco River Near Conway
USGS 01064500
473 cfs 3.03 ft 1.28
Saco River At Cornish
USGS 01066000
1300 cfs 3.12 ft -16.67
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile

The Saco River is a river in northeastern New Hampshire and southwestern Maine in the United States. It drains a rural area of 1,703 square miles (4,410 km2) of forests and farmlands west and southwest of Portland, emptying into the Atlantic Ocean at Saco Bay, 136 miles (219 km) from its source. It supplies drinking water to roughly 250,000 people in thirty-five towns; and historically provided transportation and water power encouraging development of the cities of Biddeford and Saco and the towns of Fryeburg and Hiram. The name "Saco" comes from the Eastern Abenaki word [sɑkohki], meaning "land where the river comes out". The Jesuit Relations, ethnographic documents from the 17th century, refer to the river as Chouacoet.