The Source
What's a Watershed?
Land use & Pollution
Sediment & Phosphorus
Pollution Sollutions
100
This type of pollution shown here comes from scattered sources like sidewalks, roads, and yards
What is non-point pollution.
100
This is the land area that drains into a particular lake, stream, or river.
What is a watershed?
100
This land use type often leads to high levels of stormwater runoff.
What is urban/built-up land?
100
This nutrient sticks to soil and causes excess algae growth.
What is phosphorus?
100
Picking up this kind of pet mess helps prevent bacteria in waterways.
What is pet waste?
200
The pollution shown in this image flows from a clearly identifiable pipe.
What is point source pollution.
200
Watersheds collect water from rain and snow and send it here.
What are rivers, lakes, or oceans?
200
These tiny organisms from pet or livestock waste can contaminate water.
What are bacteria or pathogens?
200
Some of this in streams is natural, but too much harms water clarity and fish habitat.
What is sediment?
200
These collect rainwater from rooftops and help reduce stormwater runoff.
What are rain barrels?
300
Rainwater washing oil, chemicals, and debris off this surface contributes to this type of pollution.
What is nonpoint source pollution?
300
These two alternate terms also mean “watershed.”
What are drainage basin and catchment?
300
This type of pollution comes from a single, identifiable source.
What is point source pollution?
300
This pollution problem reduces water clarity and makes it harder for fish to find food.
What is too much sediment?
300
Applying too much of this lawn product can increase phosphorus pollution in waterways.
What is fertilizer?
400
This photo shows pollution entering a stream from a visible outlet, an example of this pollution type.
What is point source pollution?
400
Watersheds can be large or small, but they all lead to this type of larger water body.
What is a common waterway?
400
This type of pollution comes from widespread activities, like farming or urban runoff.
What is nonpoint source pollution?
400
This term describes lakes with too much algae due to excess nutrients.
What is eutrophic?
400
These hard surfaces can be replaced with pervious pavers to let stormwater soak into the ground.
What are driveways or sidewalks?
500
Even though no pipe is visible, water running off this area can carry fertilizer and pesticides into waterways.
What is nonpoint source pollution?
500
This type of land use usually slows water flow and increases infiltration.
What is forested or undeveloped land?
500
Runoff from this type of site often carries sediment, fertilizers, and pesticides.
What is agricultural land?
500
This kind of sediment buildup can harm fish eggs and aquatic insect habitat.
What is embedded sediment?
500
Applying this car-related product carelessly can result in oil and chemical runoff into storm drains.
What is motor oil or antifreeze?