Soil Series Atlas

Natchez soil series

Coarse-silty, mixed, superactive, thermic Typic Eutrudepts

050100150cm1 ft2 ft3 ft4 ft5 ftOiOrganic layer · slightly decomposed0–3 cm · 0–1 inA1Topsoil3–10 cm · 1–4 inA2Topsoil10–23 cm · 4–9 inBw1Subsoil · color or structure change23–30 cm · 9–12 inBw2Subsoil · color or structure change30–69 cm · 12–27 inC1Parent material69–124 cm · 27–49 inC2Parent material124–168 cm · 49–66 in050100150cmOiOrganic layer ·slightly decomposed0–3 cm · 0–1 inA1Topsoil3–10 cm · 1–4 inA2Topsoil10–23 cm · 4–9 inBw1Subsoil · color orstructure change23–30 cm · 9–12 inBw2Subsoil · color orstructure change30–69 cm · 12–27 inC1Parent material69–124 cm · 27–49 inC2Parent material124–168 cm · 49–66 in
Typical pedon, to scale: 168 cm (66 in), 7 horizons.

Inceptisols — young soils with weakly developed horizons

Nationally Natchez is a small series: 227,457 acres, 1,539th of 24,791 by area. It is the only series in the atlas that falls in the coarse-silty particle-size class. No other established series shares its family class. It is the state soil of Mississippi.

Depth
Deep
Drainage
Well drained
Water movement
Moderate

Compare with another seriesSimilar series in the finder

Where Natchez is mapped

227,457 acres in 22 soil survey areas, from current SSURGO data.

AlabamaArizonaColoradoFloridaGeorgiaIndianaKansasMaineMassachusettsMinnesotaNew JerseyNorth CarolinaNorth DakotaOklahomaPennsylvaniaSouth DakotaTexasWyomingConnecticutMissouriWest VirginiaIllinoisNew MexicoArkansas: 5,260 acresCaliforniaDelawareDistrict of ColumbiaIowaKentucky: 890 acresMarylandMichiganMississippi: 194,907 acresMontanaNew HampshireNew YorkOhioOregonTennessee: 9,494 acresUtahVirginiaWashingtonWisconsinNebraskaSouth CarolinaIdahoNevadaVermontLouisiana: 16,906 acresRhode Island

Share of all Natchez acres

  1. Mississippi86%
  2. Louisiana7%
  3. Tennessee4%
  4. Arkansas2%
  5. Kentucky0.4%
  • Rank in the state · share of its mapped soil
  • Mississippi 35th of 264 · 0.72%
  • Louisiana 193rd of 324 · 0.06%

In the field

Drainage

Well drained

Drains fastStays wet

Soil depth

Deep

ShallowDeep

Harney and Hilo also are classed deep.

Permeability

Moderate

SlowFast
Parent material
Loess
Landform
Hills, plains
Type location
Mississippi

How it is classified

  1. OrderInceptisols
  2. SuborderUdepts
  3. Great groupEutrudepts
  4. SubgroupTypic Eutrudepts
  5. FamilyCoarse-silty, mixed, superactive, thermic Typic Eutrudeptscoarse-silty particle-size classmixed mineralogy classsuperactive cation-exchange activity classthermic soil temperature regime

Against other Inceptisols

Natchez makes up 0.12% of all mapped Inceptisols — the 177th largest of 3,264 series in the order.

Solum thickness (topsoil + subsoil)

69 cm under a median of 80 cm

Depth to the subsoil

23 cm over a median of 18 cm

Depth described

168 cm over a median of 152 cm

Its relatives

Other Inceptisols in this atlas

  1. Natchez168 cm · Typic Eutrudepts
  2. Berks84 cm · Typic Dystrudepts
  3. Weikert46 cm · Lithic Dystrudepts
  4. Hazleton183 cm · Typic Dystrudepts
  5. Paxton165 cm · Oxyaquic Dystrudepts
  6. Narragansett152 cm · Typic Dystrudepts

Horizon by horizon

HorizonLayerDepthThickness
OiOrganic layer: slightly decomposed0–3 cm0–1 in3 cm
A1Topsoil3–10 cm1–4 in7 cm
A2Topsoil10–23 cm4–9 in13 cm
Bw1Subsoil: color or structure change23–30 cm9–12 in7 cm
Bw2Subsoil: color or structure change30–69 cm12–27 in39 cm
C1Parent material69–124 cm27–49 in55 cm
C2Parent material124–168 cm49–66 in44 cm

Sources: USDA–NRCS Official Series Description (revised 2021-10), Soil Classification database and SSURGO. Ranks computed by Soil Series Atlas. Method · Guides