Through the Looking Glass - South Fork Nooksack River ...
Transcript of Through the Looking Glass - South Fork Nooksack River ...
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Through the Looking Glass
Steve Hood
South Fork Watershed Education Committee Forum
September 19, 2018
South Fork Nooksack Temperature TMDL
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The evolution of a simple project
• Temperature TMDL should be easy –allocate the shade from site potential tree height buffers.
• If criteria isn’t met we can call SPV natural conditions.
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Where we
are
Where
shade can
get us
Simply shade it
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The problem with shade only
• 100 year site potential underestimates the natural climax forest
• Other factors that have changed, affect temperature
• Cooler headwaters
• Channel width
• Climax forest
• Hyporheic flow
Sensitivity of Nat. Conditions
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If we could do it all!
Where we
are
Where
shade can
get us
Where our most
optimistic “natural
condition” can get
us
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• We can not (barely) meet the criteria nowoFuture summers will be warmeroDrieroWe will have less snow pack
Factor in climate change
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EPA pilot examination of climate change
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‘Now, here, you see, it takes all the running you can do, to keep in the same place. If you want to get somewhere else, you must run at least twice as fast as that!’
-Red Queen
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If we stand still (do nothing)
Where we
areWhere we
could be in
2080
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If we trot along (Shade only)
Where we
areWhere we
could be in
2080
System
Potential
Shade
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If we run as fast as we can
Where we
areAll sensitivity to
Natural
Conditions
Medium
Prediction
for 2080
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Implementation
• Shade
• Lateral connectivity (flood plain access)
• Longitudinal connectivity (fish blockage)
• Enhance ground water (wetlands)
• Hyporheic exchange (log jams)
• Refugia (more log jams)
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The residents
• Descendants of homesteaders and other long time residents
• Long history of farming and forestry
• History of restoration (CREP, Agricultural preservation)
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Hope for implementation?
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More Information
https://ecology.wa.gov/southNooksack