Chesapeake Bay Watershed Quiz
Sub-watersheds, land use, nutrient runoff (10 questions).
Chesapeake Bay Watershed Quiz: Quick Study Notes
The Chesapeake Bay Watershed is a vast and complex ecosystem spanning six states and the District of Columbia. Understanding its geography, land use patterns, and the critical issue of nutrient runoff is essential for its health and the communities it sustains. This quiz tests your knowledge on these key aspects of one of America’s most iconic estuaries.
Key Concepts
A network of rivers and streams like the Susquehanna, Potomac, and James Rivers, each contributing to the main Bay.
Comprises over 58% forest, 29% agriculture, and 11% urban/developed land, each impacting water quality.
Mainly nitrogen and phosphorus from fertilizers, animal waste, and urban stormwater, polluting waterways.
Excess nutrients cause algal blooms, leading to oxygen-depleted “dead zones” harmful to aquatic life.
Key Takeaways
- The Chesapeake Bay watershed covers over 64,000 square miles, extending into six states (NY, PA, MD, DE, VA, WV) and D.C.
- Major sub-watersheds include the Susquehanna, Potomac, and James Rivers, vital for water and material flow to the Bay.
- Forests are the largest land use type, crucial for filtering water and providing habitat.
- Agricultural lands and urbanized areas are significant sources of nutrient and sediment pollution.
- Nitrogen and phosphorus runoff drive eutrophication, leading to oxygen-depleted areas in the Bay.
- Impervious surfaces in urban areas increase stormwater runoff, carrying pollutants directly into waterways.
- Best Management Practices (BMPs) are critical for reducing pollution from all land use types.
Frequently Asked Questions
What is a watershed?
A watershed is an area of land that drains all the streams and rainfall to a common outlet, such as a river, lake, or in this case, the Chesapeake Bay.
Which human activities are the main contributors to nutrient pollution in the Chesapeake Bay?
Agriculture (fertilizers, animal waste), urban stormwater runoff (lawn fertilizers, pet waste), wastewater treatment plants, and atmospheric deposition (emissions from vehicles and industry) are the main human contributors.
What are impervious surfaces and why are they a problem for the Bay?
Impervious surfaces are materials like concrete, asphalt, and rooftops that prevent water from soaking into the ground. They increase stormwater runoff, which picks up pollutants like nutrients, sediment, and chemicals, and carries them directly into waterways.
What is eutrophication and how does it affect the Chesapeake Bay?
Eutrophication is the excessive richness of nutrients in a lake or other body of water, frequently due to runoff from the land, which causes a dense growth of plant life and death of animal life from lack of oxygen. In the Bay, it leads to algal blooms, which then decompose, depleting oxygen and creating “dead zones” harmful to fish and shellfish.
What role do forests play in the Chesapeake Bay Watershed’s health?
Forests are crucial for watershed health. They filter pollutants from stormwater runoff, stabilize soil to prevent erosion, absorb excess nutrients, cool water temperatures, and provide critical habitat for wildlife.
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