Ch 1 Storm Hydrographs

Front

Why do large drainage basins have a higher peak discharge compared to smaller basins?

Back

Large basins have more precipitation.

Front

What is the relationship between drainage density and lag time?

Back

Basins with high drainage density have shorter lag times.

Front

What is the purpose of flood hydrographs?

Back

To predict flooding

Front

What is the impact of impermeable rock on surface runoff, throughflow, and infiltration?

Back

Impermeable rock increases surface runoff and reduces throughflow and infiltration.

Front

Why do smaller basins generally have shorter lag times? Options: Smaller basins have steeper slopes, Smaller basins have more precipitation, Smaller basins have shorter distances to travel, Smaller basins have longer distances to travel

Back

Smaller basins have shorter distances to travel

Front

What is the relationship between permeable rock and lag time?

Back

Permeable rock increases lag time.

Front

What is river discharge?

Back

The volume of water passing a point each second.

Front

What physical factors affect the shape of a storm hydrograph? Shape of the drainage basin, Size of the drainage basin, Slope of the drainage basin

Back

All of the above

Front

What is base flow?

Back

The water that reaches the channel through slow throughflow and permeable rock below the water table.

Front

How does saturation affect surface runoff and lag time? Options: Saturation decreases surface runoff and increases lag time, Saturation increases surface runoff and reduces lag time, Saturation increases throughflow and infiltration, Saturation has no impact on surface runoff and lag time

Back

Saturation increases surface runoff and reduces lag time