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Data Sources
Topo
Ecoregions
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BASEMAPS
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Temperature
Smoke
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WEATHER
Alluvium (WAQa;0)
Geologic Formation
in
WA
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Lithology
Peat
Clay
Peat
Other
(8,480 mi²)
Geologic Age
Holocene (11700 years ago – 2020)
Geologic Unit Label
Qa
Mostly unconsolidated silt, sand, and gravel valley fill with some clay; includes low-level terrace, marsh, peat, artificial fill, and glacial deposits locally.
—
USGS
Taxonomy
Classified As
Geologic Formation
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