Extra notes from Ch. 11• A river can have high erosiveor high depositionalpower. Not both at the same time.Relationship to sediment load:•If sediment load in the river is high, it has high depositional power.•If sediment load in the river is low, it has high erosional powerRelationship to velocity (and therefore discharge)•If velocity is high, erosive power is high•When sediment load or discharge is changed, a river will change its pattern or gradient to maintain a natural balance of erosion and deposition.
This preview has intentionally blurred sections.
Sign up to view the full version.
Ch. 12-- Floods and Human InteractionsDevelopment Effects on Floodplains UrbanizationDeforestation from fires, logging, overgrazingMiningBridgesLevees and their effects on floodingFlooding from dam failureReducing flood damage