Top Discharges

Streamgauges reporting the most discharge on the Monongahela River

10 Day Trend

Discharge comparison for the highest gauges over the past 10 days

Expected Streamflow Ranges

Streamflow discharge range for this time of year

The Monongahela River ( mə-NONG-gə-HEE-lə, -⁠HAY-) — often referred to locally as the Mon () — is a 130-mile-long (210 km) river on the Allegheny Plateau in north-central West Virginia and southwestern Pennsylvania. The river flows from the confluence of its west and east forks in north central West Virginia northeasterly into southwestern Pennsylvania, then northerly to Pittsburgh and its confluence with the Allegheny River to form the Ohio River. The river is navigable its entire length via a series of locks and dams. Source: Wikipedia