All Flashcards
Effect of urban runoff on aquatic life?
Contamination of water bodies, harming/killing organisms.
Cause of Southern California beach closures after rain?
High levels of pollutants in urban runoff.
Effect of increased runoff volume/velocity?
Soil erosion and flooding in urban/downstream areas.
What causes decreased groundwater levels in urban areas?
Impervious surfaces prevent water infiltration.
What is urban runoff?
Water from rain/snow flowing over man-made surfaces.
Define impervious surfaces.
Surfaces that prevent water infiltration (e.g., roads).
What is permeable pavement?
Pavement that allows water to seep through.
What are green roofs?
Vegetation planted on rooftops to absorb rainwater.
What are rain gardens?
Depressions planted to collect and filter runoff.
How does permeable pavement help?
Allows water to seep into the ground.
How do green roofs reduce runoff?
They absorb rainwater with vegetation.
How do rain gardens function?
Collect and filter runoff with native vegetation.
How does tree planting help?
Trees absorb rainwater and reduce runoff volume.
How does reducing impervious surfaces help?
Allows for more water infiltration into the ground.