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Enviroscape®
Nonpoint Source Model
Salmon
Habitat Enhancement Activities (SHEA)
SHEA Materials
Background
on NPS/Runoff Activities
The
EnviroScape® Nonpoint Source
(NPS) model uses visual, hands-on activities
to demonstrate the relationship between land use and water quality.
Demonstration
areas and activities on the model represent various potential
sources of nonpoint source pollution:
|
Areas
|
Relevance
|
| Residential |
Where
we live |
| Transportation |
How
we get to where we are going |
| Agriculture/Livestock |
Where
food comes from |
| Construction |
What
happens when our community grows |
| Logging |
Where
wood comes from, How it is used |
| Industrial |
What
is point source pollution |
| Recreational |
How
we use land for pleasure |
| Storm
Drains |
How
storm drains empty into streams |
One
by one, "pollutants" are applied to the landscape top and a
land-use and related impacst are identified and discussed, perhaps
in story format.
|
Materials
|
Pollutants
|
| Cocoa,
cinnamon, soil |
Soil
erosion, silt |
| Colored
drink mixes |
Pesticides,
fertilizers, HHW |
| Soy
sauce mixture |
Sludge
or oil mix |
| Ground
fish flakes |
Animal
waste |
| Colored
sprinkles |
Litter |
Water
is then applied and the contaminated runoff makes its way across
the land and into streams that feed into a main waterbody. The
result is a turbid and polluted watershed that would not be
safe for people or marine life.
DISCUSS
THE WATERSHED, HOW IT BECAME UNHEALTHY, AND WHAT YOU CAN DO
ABOUT IT.
Empty
the polluted liquid into the water tray and wipe the landscape
top. Refill the water body with clean water. You're ready to
go again.
A
TYPICAL NPS DEMONSTRATION WOULD CONTINUE TO: Introduce best
management practices (BMPs) by applying vegetative strips and
berms.
Show
the application of BMPs on the landscape top and show how they
help reduce pollutants. Recognize the importance of riparian
areas and wetlands.
|
Materials
Used
|
BMPs
Represented
|
| Sticky-back
felt strips |
Vegetative
buffer strip |
| Sticky-back
felt and sponges |
Wetland
areas |
| Clay |
Berms,
silt fence, barriers |
| Fences
and Manure container |
Livestock
management |
| Trees
and sticky-back felt |
Riparian
zones |
Note:
If using the SHEA next, wait until the "restoration" part of
that lesson to introduce BMPs.
Now
that a personal connection has been made to NPS pollution, the
question of how to sustain or restore healthy watersheds for
people and salmon has a lot more meaning and can be understood
in the context of choices we make in our daily lives.
GO
TO SALMON HABITAT ENHANCEMENT ACTIVITIES (SHEA)
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