Field Indicators of Hydric Soils in the United States - ITC

Field Indicators of Hydric SoilsLocation of Indicators by pageAll soilsA1 Histosol ...................................................... 5A2 Histic Epipedon ........................................ 5A3 Black Histic ...............................................5A4 Hydrogen Sulfide ......................................6A5 Stratified Layers ....................................... 6A6 Organic Bodies. ........................................ 7A7 5 cm Mucky Mineral .................................8A8 Muck Presence. ........................................ 8A9 1 cm Muck .................................................9A10 2 cm Muck .................................................9TA1 Playa Rim Stratified Layers ................... 20TA2 Structureless Muck ................................ 20TA3 Coast Prairie Redox ............................... 20Sandy soilsS1 Sandy Mucky Mineral .............................. 9S2 2.5 cm Mucky Peat or Peat ......................9S3 5 cm Mucky Peat or Peat ....................... 10S4 Sandy Gleyed Matrix .............................. 10S5 Sandy Redox ........................................... 10S6 Stripped Matrix ....................................... 10S7 Dark Surface ........................................... 12S8 Polyvalue Below Surface ....................... 12S9 Thin Dark Surface .................................. 13S10 Alaska Gleyed ......................................... 13TS1 Iron Staining ............................................ 21TS2 Thick Sandy Dark Surface ..................... 21TS3 Dark Surface 2 ........................................ 21TS4 Sandy Neutral Surface ........................... 21TS5 Chroma 3 Sandy Redox ......................... 21Loamy and clayey soilsF1 Loamy Mucky Mineral ........................... 13F2 Loamy Gleyed Matrix ............................. 14F3 Depleted Matrix ...................................... 14F4 Depleted Below Dark Surface ............... 15F5 Thick Dark Surface ................................ 15F6 Redox Dark Surface ............................... 16F7 Depleted Dark Surface ........................... 17F8 Redox Depressions ................................ 17F9 Vernal Pools ............................................ 17F10 Marl .......................................................... 18F11 Depleted Ochric ...................................... 18F12 Iron/Manganese Masses ......................... 18F13 Umbric Surface ....................................... 19F14 Alaska Redox Gleyed ............................. 19F15 Alaska Gleyed Pores .............................. 19F16 High Plains Depressions ........................ 20TF1 ? cm Mucky Peat or Peat ....................... 21TF2 Red Parent Material ............................... 21TF3 Alaska Concretions ................................ 22TF4 2.5Y/5Y Below Dark Surface ................. 22TF5 2.5Y/5Y Below Thick Dark Surface ...... 22TF6 Calcic Dark Surface ............................... 22TF7 Thick Dark Surface 2/1 .......................... 22TF8 Redox Spring Seeps. .............................. 23TF9 Delta Ochric ............................................ 23TF10 Alluvial Depleted Matrix ........................ 23TF11 Reduced Vertic ........................................ 23iv (430, FIHS, Ver. 5.01, March 2003)