THE CHESAPEAKE BAY
What is a watershed
It covers 64,000 square miles between
Vermont North Carolina
The Chesapeake bay is huge
The chesapeak bay is a ecosystem
It covers a surface area of over 2,200 square
miles approximately 3,500 square
Over 2500 different kinds of plants and
animals live in the bay area
How is a bay like your
Over 13 million people work, play, live. One
way or another , pollutants from all of these
people wind up in the bays waters .
Chesapeake bay is covered with farms
factories cities and highways schools and
apartment buildings, landfills and
campgrounds restaurants and marinas.
Its all down hill
Just imagine industrial waste pouring out of Baltimore's factories
,puddles of motor oil on the highway, extra fertilizer and pesticides
from lawns in virginal and Delaware, muddy runoff from
construction sites in Maryland, acid from mines in west virginal , cow
manure from Pennsylvania dairy farms, and sewage from 13 million
With all this human made pollution no wonder the bay is in trouble.
Too many pollutants
Too many nutrients from human sewage,
cows manure , and fertilizer overloading the
Too many algae cloud the water and keep
light from reaching the grass below.
The importance of grass
The grass beds are tensile to the bays health.
Grass beds near the shore line help absorb
the pounding of the waves.
Forests keep sediment out of the
Some sedimentation occurs naturally. But
humans cause most of it, especially when we
cut down trees and other vegetation.
Oysters natures filters
Oysters serve as natural filters, helping keep
the water clear. To trap its food, microscopic
algae, an oyster pumps in water-up to two
gallons per hour!
Chesapeake was pilled high with oyster beds
but only one percent of the oysters are left.
But you may have heard of others, such as
shade, rockfish (striped bass), herring perch
eel, and blue fish. Some eat plants and algae.
Some are bottom feeders and hunt in oyster
or grass beds for snails, small crabs, and
worms. Some eat small fish
Why are fisherman catching fewer fish? there
are many reasons. People built dams across
the rivers in watershed area.
Blue crabs: The last great
The chesapeake bay sill produces about half
of the nations blue crab harvest. They are the
last great catch in the bay. Blue crabs are real
survivors. They are scavengers who eat
almost anything they can find.
Searching for the solution
In the real world of the chesapeake bay, the
problems are much more complex. And the
pollutions are too
Everyone agrees that the chesapeake bay has
many problems, most of the human- made.