Which mechanism causes increased stream erosion downstream of a dam following heavy precipitation?

💡 Explanation

When a dam reduces sediment supply, clear water released downstream has increased erosive power because it is not sediment-laden. Therefore increased stream erosion results, rather than increased regulation, or reduced floodplain interactions which require different flow dynamics, or elevated water temperature.

• Which phenomenon results when upper-level divergence aloft exceeds surface convergence in an idealized Hadley cell?
• Which ecological consequence results downstream when coastal upwelling weakens due to reduced offshore wind stress?
• Which risk increases during rapid snowmelt in mountainous permafrost regions experiencing solifluction?
• Which outcome occurs when extensive loess deposits erode?
• Which mechanism causes increased stream meandering as a river flows across a coastal plain?
• On coastlines with varied rock resistance, which mechanism explains sea stack formation?