Ohio River Sediment Load: 162.7 M Tons/Year at Cincinnati

Sediment Dynamics of the Ohio River

At Cincinnati, the average annual suspended‑sediment load is ~162.7 million tons (USGS data). Extremes vary widely—peak recorded 356.7 M tons (1997). Loads peak in spring/summer with heavy rains.

Sources

• Riverbank/bluff erosion (major contributor)
• Agricultural runoff
• Construction site runoff
• Mining discharges

Impacts

• Water‑quality degradation (turbidity, contaminant transport)
• Reservoir siltation (lost flood‑control & water‑supply capacity)
• Aquatic habitat smothering (fish eggs, mussels, light reduction)

Management Strategies

• Riparian buffers (vegetated bank stabilization)
• Contour farming & terraces (slow runoff)
• Sediment traps & detention basins
• Targeted dredging

Coordinated watershed efforts across 6 states aim to reduce loads sustainably.