Transcript Nonpoint Source Management Plan

Nonpoint Source Management Plan:
Issues and Opportunities
Greg Anderson
Nonpoint Source Coordinator
MO DNR
Common Nonpoint Source
Impairments
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Sediment
Phosphorus
Nitrogen
Pesticides
• Acidity and Salts
• Heavy metals
• Low Dissolved
Oxygen
• Various Urban
Stormwater
Sedimentation and Soil Erosion
Several water quality problems can be associated
with cattle and grazing: bank instability, soil
compaction, loss of vegetation, manure and enteric
bacteria in streams.
Overgrazing keeps
grass roots short
by keeping the
leaves short. Short
leaves can't
generate enough
energy to feed
deep roots.
Streambank erosion is
often caused by loss of
riparian vegetation,
grade and channel
modifications.
In 200 years, the U.S. has lost over 1/3 of its topsoil.
About half of U.S. fertilizer simply replaces nutrients
lost to soil erosion. (NOAA 2002)
Phosphorus
Excessive nutrient loading
stimulates algae growth, such as
this filamentous blue green algae
And causes algae blooms such as this.
And this.
Sediment and Nutrients - loading often varies with
landuse and management practices.
Nitrogen
Gulf hypoxic zone - the “brown water ”
is carrying excess nutrients and sediment
Every year 1.57 million metric tons of nitrogen
(nitrate and organic nitrogen) enter the Gulf of
Mexico from the Mississippi basin.
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Soil mineralization
Fertilizer (the largest annual inputs)
Legumes and pasture
Animal manure
Atmospheric deposition
Septic systems
Municipal and industry point pollution
Red = 10mg/m3
phytoplankton pigment
Low Dissolved Oxygen
• Fish mortality due to lack
of oxygen in the water.
• Eutrophication and
oxygen depletion
• Excessive nutrients cause
increased plant growth.
The decaying organic
matter, often primarily
phytoplankton and
zooplankton, depletes
oxygen in the system.
Pesticides
Pesticides find their way into streams and drinking
water supplies.
In addition to toxic
compounds, pesticides may
also contain mutagenic
compounds and endocrine
disrupters.
Other emerging problems
include antibiotic and
hormone loading.
Acid mine drainage,
iron precipitate, heavy
metals and iron loving
bacteria.
Mine spoil eroding
into stream. This
spoil contains large
amounts of sulfates,
manganese, and iron
in addition to
contributing heavy
metals and acidic
drainage.
Urban Stormwater
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Heavy metals
Nutrients
Pesticides
Sediment
Hydrocarbons
Others
Urban Stormwater
319 Nonpoint Source Implementation
Program - “319 Grant”
• Nonpoint Sources
• Nonprofits, Educational Institutions, Local
Governments
• Watershed Approach - Locally Led
• Consistent with Missouri’s Nonpoint Source
Management Plan
Nonpoint Source Management Plan
Required by the Clean Water Act
Nonpoint Source Management Plan
In order to prevent or control NPS pollution,
pollutants or conditions must be identified,
their role in water quality must be understood
and the sources of pollutants or conditions
must be identified.
Nonpoint Source Management Plan
Components
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Goals and Objectives
Prioritization
Assessment
Funding
Milestones
Partners
Evaluation
Nonpoint Source Management Plan
Revisions
• Annual updates are required
• Fifth year requirement is a major revision
Nonpoint Source Management Plan
-Issues• Content - Contributions of time and input to
write a good plan
• Committed long-term participation to
follow through, evaluate, and adapt
• There is a great need to share watershed
information, data, and join in committed
and consolidated watershed based efforts
Nonpoint Source Management Plan
-Opportunities• Watershed approach
• A good plan
• Annual reports of accomplishments and
challenges
• Opportunities to work together toward an
honorable goal - clean water
Questions?
Please feel free to contact me.
Greg Anderson 573-751-7144
[email protected]