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I just finished my 100th tree risk assessment and I'm starting to question the standard method
Everyone in my company swears by the ISA's basic visual tree risk assessment form, but after using it on 100 different trees in Portland, I think it misses a lot. It doesn't properly account for how soil saturation from our winter rains changes root plate stability overnight. Has anyone else found a better way to factor in rapid weather changes for risk ratings?
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pat_wood2mo ago
Check if your local university has done any soil stability research. Portland State might have data on how rain impacts root plates that the ISA forms don't cover yet. You could be onto something the standard method is too slow to catch.
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brookes372mo ago
Yeah the standard form feels pretty basic sometimes. I started adding my own notes section for soil conditions and recent weather changes. That extra context helped a lot when things got soggy fast.
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