Soil Series Atlas

Miamian soil series

Fine, mixed, active, mesic Oxyaquic Hapludalfs

050100150200cm1 ft2 ft3 ft4 ft5 ft6 ftApTopsoil · plowed0–23 cm · 0–9 in2Bt1Subsoil · clay build-up, different parentmaterial23–30 cm · 9–12 in2Bt2Subsoil · clay build-up, different parentmaterial30–46 cm · 12–18 in2Bt3Subsoil · clay build-up, different parentmaterial46–66 cm · 18–26 in2BCSubsoil grading to parent material ·different parent material66–84 cm · 26–33 in2CdParent material · dense, rootsrestricted, different parent material84–200 cm · 33–79 in050100150200cmApTopsoil · plowed0–23 cm · 0–9 in2Bt1Subsoil · claybuild-up, differentparent material23–30 cm · 9–12 in2Bt2Subsoil · claybuild-up, differentparent material30–46 cm · 12–18 in2Bt3Subsoil · claybuild-up, differentparent material46–66 cm · 18–26 in2BCSubsoil grading toparent material ·different parentmaterial66–84 cm · 26–33 in2CdParent material ·dense, rootsrestricted, differentparent material84–200 cm · 33–79 in
Typical pedon, to scale: 200 cm (79 in), 6 horizons.

Alfisols — moderately leached soils with a clay-enriched subsoil

Miamian is mapped on 757,634 acres in 2 states, 288th nationally by area. In Ohio only three series cover more ground. Its larger relative Miami is the one other atlas series in Oxyaquic Hapludalfs; Miamian is fine rather than fine-loamy and well drained rather than moderately well drained. It is the largest of the 13 established series in its family. It is the state soil of Ohio.

Depth
Very deep
Drainage
Well drained
Water movement
Moderately high

Compare with another seriesSimilar series in the finder

Where Miamian is mapped

757,634 acres in 38 soil survey areas, from current SSURGO data.

AlabamaArizonaColoradoFloridaGeorgiaIndiana: 78,171 acresKansasMaineMassachusettsMinnesotaNew JerseyNorth CarolinaNorth DakotaOklahomaPennsylvaniaSouth DakotaTexasWyomingConnecticutMissouriWest VirginiaIllinoisNew MexicoArkansasCaliforniaDelawareDistrict of ColumbiaIowaKentuckyMarylandMichiganMississippiMontanaNew HampshireNew YorkOhio: 679,463 acresOregonTennesseeUtahVirginiaWashingtonWisconsinNebraskaSouth CarolinaIdahoNevadaVermontLouisianaRhode Island

Share of all Miamian acres

  1. Ohio90%
  2. Indiana10%
  • Rank in the state · share of its mapped soil
  • Ohio 4th of 513 · 2.87%
  • Indiana 69th of 534 · 0.39%

In the field

Drainage

Well drained

Drains fastStays wet

Soil depth

Very deep

ShallowDeep

Water movement (Ksat)

Moderately high

SlowFast
Parent material
Loess, glacial till
Landform
Till plains, moraines
Type location
Ohio

How it is classified

  1. OrderAlfisols
  2. SuborderUdalfs
  3. Great groupHapludalfs
  4. SubgroupOxyaquic Hapludalfs
  5. FamilyFine, mixed, active, mesic Oxyaquic Hapludalfsfine particle-size classmixed mineralogy classactive cation-exchange activity classmesic soil temperature regime

Against other Alfisols

Miamian makes up 0.27% of all mapped Alfisols — the 49th largest of 4,001 series in the order.

Solum thickness (topsoil + subsoil)

84 cm under a median of 127 cm

Depth described

200 cm over a median of 156 cm

Its relatives

12 other established series share the family “Fine, mixed, active, mesic Oxyaquic Hapludalfs”

  1. Miamian758 k
  2. Useful199 k
  3. Munterville101 k
  4. Ebal98 k
  5. Alsup71 k
  6. Brookside68 k
  7. Aaron28 k
  8. Derinda22 k
  9. Vincent15 k

Close relatives, at one scale

  1. Miamian200 cm · Oxyaquic Hapludalfs
  2. Miami200 cm · Oxyaquic Hapludalfs
  3. Stuttgart203 cm · Albaquultic Hapludalfs
  4. Lester203 cm · Mollic Hapludalfs

Horizon by horizon

HorizonLayerDepthThickness
ApTopsoil: plowed0–23 cm0–9 in23 cm
2Bt1Subsoil: clay build-up, different parent material23–30 cm9–12 in7 cm
2Bt2Subsoil: clay build-up, different parent material30–46 cm12–18 in16 cm
2Bt3Subsoil: clay build-up, different parent material46–66 cm18–26 in20 cm
2BCSubsoil grading to parent material: different parent material66–84 cm26–33 in18 cm
2CdParent material: dense, roots restricted, different parent material84–200 cm33–79 in116 cm

Sources: USDA–NRCS Official Series Description (revised 2021-11), Soil Classification database and SSURGO. Ranks computed by Soil Series Atlas. Method · Guides