Which phenomenon significantly reduces a river's sediment-carrying capacity when it enters a lake or ocean?

💡 Explanation

When a river enters a lake or ocean, the flow velocity decreases dramatically because its energy is dispersed over a wider area, reducing its competence because larger particles then settle out of suspension. Therefore, reduced flow velocity causes sedimentation, rather than increased turbulence, weathering, or armoring, which exert different forces in varied conditions.

• Which volcanic outcome results when a confined eruption transitions directly from a lava dome collapse to intense pyroclastic flow?
• Which risk increases when constructing a multi-story building foundation on unconsolidated alluvial soil near seismic fault lines?
• Which consequence results when tephra accumulation exceeds capacity?
• Which long-term outcome results from sediment disruption of tidal inlet hydrodynamics?
• Which outcome results when extensive soil disturbance by agriculture precedes intensified desert deflation?
• Which ecological consequence results when a persistent high-pressure system reduces coastal upwelling along the California coast?