Changes in Water Flow
In many parts of the country, freshwater
is a scarce resource because so many people need it—for their homes,
schools, farms, factories, and other uses. Because it is in such
high demand, state and local governments continue to search for new,
inexpensive supplies of freshwater.
Options include building dams to trap water from rivers, pumping
water from the ground, and dredging for new sources of water. Each
of these activities can change the timing and amount of freshwater
that enters our estuaries, and natural drought
cycles only make their effects worse. Reducing the amount of
freshwater flowing into estuaries can cause erosion
and interfere with fish reproduction, shellfish survival, bird
nesting, and seed distribution because the water becomes too salty.
more about changes in water flow.
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