"MT644"|6|"MAR"|"Marsh or swamp"|A water saturated, very poorly drained area that is intermittently or permanently covered by water. Sedges, cattails, and rushes are the dominate vegetation in marshes, and trees or shrubs are the dominant vegetation in swamps. Not used in map units where the named soils are poorly drained or very poorly drained. Typically 1 to 5 acres.|"263558"
"MT644"|6|"ROC"|"Rock outcrop"|An exposure of bedrock at the surface of the earth. Not used where the named soils of the surrounding map unit are shallow overbedrock or where Rock outcrop is a named component of the map unit. Typically 1 to 5 acres.|"263559"
"MT644"|6|"SAL"|"Saline spot"|An area where the surface layer has an electrical conductivity of 8 mmhos cm more than the surface layer of the named soils in the surrounding map unit. The surface layer of the surrounding soils has an electrical conductivity of 2 mmhos cm or less. Typically 1 to 5 acres.|"263560"
"MT644"|6|"SLI"|"Slide or slip"|A prominent landform scar or ridge caused by fairly recent mass movement or descent of earthy material resulting from failure of earth or rock under shear stress along one or several surfaces. Typically 1 to 5 acres.|"263561"
"MT644"|6|"SLP"|"Short, steep slope"|A narrow area of soil having slopes that are at least two slope classes steeper than the slope class of the surrounding map unit.|"263562"
"MT644"|6|"SPO"|"Spoil area"|A pile of earthy materials, either smoothed or uneven, resulting from human activity. Typically 1 to 5 acres.|"263563"
"MT644"|6|"STN"|"Stony spot"|A spot where 0.01 to 0.1 percent of the soil surface is covered by rock fragments that are more than 10 inches in diameter in areas where the surrounding soil has no surface stones. Typically 1 to 5 acres.|"263564"
"MT644"|6|"STV"|"Very stony spot"|A spot where 0.1 to 3.0 percent of the soil surface is covered by rock fragments that are more than 10 inches in diameter in areas where the surface of the surrounding soil is covered by less than 0.01 percent stones. Typically 1 to 5 acres.|"263565"
"MT644"|6|"WAT"|"Perennial water"|Small, natural or constructed lakes, ponds, or pits that contain water most of the year. Typically 1 to 5 acres.|"263566"
"MT644"|6|"WET"|"Wet spot"|A somewhat poorly drained to very poorly drained area that is at least two drainage classes wetter than the named soils in the surrounding map unit. Typically 1 to 5 acres.|"263567"
"MT644"|6|"GRA"|"Gravelly spot"|A spot where the surface layer has more than 35 percent, by volume, rock fragments that are mostly less than 3 inches in diameter in an area that has less than 15 percent rock fragments. Typically 1 to 5 acres.|"263557"
"MT644"|6|"GPI"|"Gravel pit"|An open excavation from which soil and underlying material have been removed and used, without crushing, as a source of sand or gravel. Typically 1 to 5 acres.|"263556"
"MT644"|6|"DEP"|"Depression, closed"|A shallow, saucer-shaped area that is slightly lower on the landscape than the surrounding area and that does not have a natural outlet for surface drainage. Typically 1 to 5 acres.|"263555"
"MT644"|6|"CLA"|"Clay spot"|A spot where the surface texture is silty clay or clay in areas where the surface layer of the soils in the surrounding map unit is sandyloam, loam, silt loam, or coarser. Typically 1 to 5 acres.|"263554"
