In Northern California, we really see this huge increase [in post-fire erosion] from the first decade to the second to the third to the fourth. There’s just a large rise in sediment, both in mass... and then also when we look at yield, being the mass per area.
It’s not surprising ... but it’s good to see it quantified by USGS. It points out what the bigger problem is, which is, California.
Sediment runoff can fill reservoirs and take up valuable water storage space, damage flood control infrastructure and threaten nearby communities vulnerable to flash flooding.
A new study from the U.S. Geological Survey documented a tenfold increase in post-fire hillside erosion in Northern California from the late 1980s to the 2010s.
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