Major Land Resource Area 224X

Cook Inlet Lowlands

Accessed: 04/18/2025

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Land Resource Regions and Major Land Resource Areas of the United States, the Caribbean, and the Pacific Basin

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Zoom in to display soil survey map units for an area of interest, and zoom out to display MLRAs. Select a map unit polygon to view ecological sites correlated to that map unit. View a brief description of an ecological site by clicking on its name in the map popup. Soil survey correlations may not be accurate, and ecological site classification of a location should always be verified in the field. Each selection may require the transfer of several hundred KB of data.

Ecological site keys

MLRA 224X Provisional Key

I. Organic rich soils

A. Depressions

1 Wet Depressions ... R224XY534AK – Organic Depressions, Very Wet

2 Depressions not excessively wet ... R224XY535AK – Organic Depressions

B. Floodplains

1 Wet Floodplains ... R224XY501AK – Organic High Flood Plains, Very Wet

2 Floodplains not excessively wet ... R224XY502AK – Organic High Flood Plains

II. Non-organic rich soils

A. Glacial influenced Soils

1 Moraine ice influenced soils ... F224XY803AK – Moraines, Ice Cored

2 Till soils

i. Wet Till slopes ... F224XY362AK – Till Slopes, Wet Boreal-forested silty wet till slopes

ii. Till slopes, not wet ... F224XY359AK – Till Slopes Boreal-forested silty till slopes

B. Alluvium influenced soils

1 Gravelly floodplains

i. Riparian scrub floodplains

a. Alpine Floodplains ... R224XY257AK – Gravelly Flood Plains, Cool Alpine-riparian scrub gravelly diorite flood plains, Alpine-riparian scrub gravelly flood plains

b. Subalpine and boreal floodplains ... R224XY200AK – Gravelly Low Flood Plains Subalpine-riparian scrub gravelly diorite flood plains, Boreal-riparian scrub gravelly flood plains

ii. Forested floodplains ... F224XY201AK – Gravelly Flood Plains

2 Loamy Floodplains

i. Loamy forested floodplains ... F224XY100AK – Loamy Flood Plains

ii. Scrub and herbaceous driven wet floodplains

a. Boreal riparian scrub ... R224XY500AK – Loamy Wet Flood Plains Boreal-riparian scrub loamy wet flood plains

b. upland and high elevation floodplains

1) Alpine herbaceous floodplains ... R224XY152AK – Loamy Wet Flood Plains, High Elevation

2) Subalpine upland wet floodplains ... R224XY156AK – Loamy Wet High Flood Plains

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