Primary headwaters are best protected by buffers of forest with a 70-80% or more canopy cover.
The Forest Service's guide (page 40) suggests a 50-150' forested buffer when there is shallow groundwater. Plus...
"Where groundwater emerges as a spring or seep, it may flow across the buffer zone too quickly...and a wider buffer may be necessary..."
LaDue's 42-acre pilot forest contains an intrictate system of primary headwaters streams and seeps.
Side note: Primary headwater
streams* comprise 80% of Ohio's
freshwater stream miles.
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