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Federated States of Micronesia Soil Surveys

4 survey areas

Federated States of Micronesia has 4 USDA soil survey areas covering a wide range of landscapes and soil conditions. The most common soil order is Inceptisols — young soils with minimal horizon development but more than Entisols, making up roughly 32% of surveyed soils. Oxisols — highly weathered tropical soils, deep but nutrient-poor account for another 21%.

In terms of drainage, 68% of Federated States of Micronesia soils are classified as well drained. About 22% of soils have some form of poor drainage, which is important to consider for septic systems and foundations. Drainage class affects everything from septic system design to basement feasibility to garden planning. Use the survey area pages below to see drainage details for specific counties, or look up any address for an exact soil profile.

Soil Types

Inceptisols
32% of surveyed soils
Young but developing soils found in mountains and river terraces. Variable properties — check drainage and bedrock depth.
Oxisols
21% of surveyed soils
Deeply weathered tropical soils. Nutrient-poor despite appearing lush. Rare in the continental US.
Entisols
20% of surveyed soils
Young soils with little development — found on floodplains, dunes, and steep slopes. Properties vary widely by setting.
Alfisols
13% of surveyed soils
Moderately weathered forest soils with clay-enriched subsoil. Productive for agriculture, generally good for building and septic.
Histosols
8% of surveyed soils
Organic peat and muck soils formed in wetlands. Very poor for building (compressible) and septic. Often in regulated wetlands.
Mollisols
3% of surveyed soils
Fertile grassland soils with thick, dark topsoil. Among the best for agriculture, building, and gardening.

Survey Areas

Island of Kosrae, Federated States of MicronesiaIsland of Ponape, Federated States of MicronesiaIslands of Truk, Federated States of MicronesiaIslands of Yap, Federated States of Micronesia

Look Up a Specific Address

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