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all the land area that supplies water to a river. Includes all the tributaries, streams, underground water, ponds, etc.
What is watershed?
when sediment is put down by a river (not carried in the water) higher in slow moving water
When is dissolved oxygen high?
water that is cold, fresh (not salty), and fast moving
Where is most of the water on Earth?
In the oceans
Most of the freshwater on earth is not drinkable because
Frozen
smaller streams that feed into bigger rivers, or smaller rivers that feed into bigger rivers
What is tributary?
murkiness of the water, how hard it is to see through it
What is Turbidity?
How does water velocity affect sedimentation and turbidity in a watershed?
Fast water has less sedimentation because it can pick up the sediment, not put it down
The amount of freshwater on Earth
3%
Where freshwater or saltwater meet, the end of mouth of a river
Estuary
high area of land that separates one watershed from another
What is Divide?
how much light passes through the water (negative relationship with Turbidity)
How does that affect photosynthesis and oxygen?
Faster has less sedimentation, more turbidity, less transmittance, less photosynthesis and less oxygen
A land area that supplies water to a river system
What is Watershed
Pollutants that never go away and get more concentrated at higher food levels of the food chain.
Bioaccumulation
area of land covered in water all or part of the year
What is Wetland?
non-point source pollution where it is hard to find the exact source, such as oil in a run off
What is NPS Pollution?
Why are estuaries important?
home to marine life, especially baby fish, birds. Have lots of pollution because it is the end of the river, temperature and salinity change a lot here
A breeding ground for lots of fish
Estuary
Fresh water is ___ than salt water
Less dense
where the river meets the ocean, where salt and freshwater meet, home to lots of marine life, birds, baby fish, etc
Water that fills up the cracks and spaces between soil and rock layers
What is Groundwater?
Why are wetlands important?
provide water and habitat, help slow down and filter water
Specific things whose presence or absence can be used to assess water quality, usually a first sign are
Bioindicators
Warm water is ___ than cool water
Less dense