LOCATION FLOTAG                  WA

Established Series
Rev. AG/RJE/KWH/RWL
06/2011

FLOTAG SERIES

The Flotag series consists of very deep, moderately well drained soils that formed in mudflow deposits derived from mixed volcanic ash and basaltic and andesitic sand and gravel. Flotag soils are on low terraces. Slopes are 0 to 2 percent. The mean annual precipitation is about 50 inches and the mean annual temperature is about 47 degrees F.

TAXONOMIC CLASS: Coarse-loamy, isotic, mesic Vitrandic Humixerepts

TYPICAL PEDON: Flotag gravelly ashy sandy loam - pasture on a 1 percent terrace at an elevation of 1,900 feet. (Colors are for moist soil unless otherwise noted. All textures are apparent field textures.)

Ap--0 to 8 inches; grayish brown (10YR 5/2) gravelly ashy sandy loam, very dark brown (10YR 2/2) moist; weak fine granular structure; slightly hard, very friable, nonsticky and nonplastic; many fine and very fine roots; many fine irregular pores; 20 percent gravel; moderately acid (pH 5.8); clear smooth boundary. (4 to 11 inches thick)

Bw--8 to 19 inches; grayish brown (10YR 5/2) gravelly ashy sandy loam, dark brown (10YR 3/3) moist; weak fine and medium subangular blocky structure; slightly hard, friable, nonsticky and nonplastic; many very fine and common fine roots; many fine irregular and common fine tubular pores; 30 percent gravel and few cobbles; moderately acid (pH 6.0); clear smooth boundary. (7 to 13 inches thick)

C1--19 to 34 inches; light brownish gray (10YR 6/2) gravelly ashy sandy loam, dark grayish brown (10YR 4/2) moist; few fine prominent redox concentrations of yellowish brown (10YR 5/8), yellowish brown (10YR 5/6) moist; massive; slightly hard, friable, nonsticky and nonplastic; common fine and very fine roots; common fine irregular and common fine tubular pores; 25 percent gravel and 5 percent cobbles; moderately acid (pH 6.0); abrupt smooth boundary. (13 to 19 inches thick)

2Ab--34 to 41 inches; dark grayish brown (10YR 4/2) gravelly loam, very dark brown (10YR 2/2) moist; weak fine subangular blocky structure; soft, friable, slightly sticky and nonplastic; weakly smeary; common very fine roots; many fine irregular and common very fine tubular pores; 15 percent gravel; moderately acid (pH 6.0); clear smooth boundary. (5 to 30 inches thick)

2Bwb--41 to 56 inches; brown (10YR 5/3) gravelly loam, very dark grayish brown (10YR 3/2) moist; weak fine and medium subangular blocky structure; soft, friable, slightly sticky and nonplastic; weakly smeary; common very fine roots; many very fine irregular and few fine tubular pores; 20 percent gravel; moderately acid (pH 6.0); abrupt smooth boundary. (10 to 20 inches thick)

2C2--56 to 60 inches; pink (7.5YR 7/4) gravelly sandy loam, brown (7.5YR 4/4) moist; few fine distinct redox concentrations of reddish yellow (7.5YR 6/8), strong brown (7.5YR 5/8) moist; massive; hard, very friable, nonsticky and nonplastic; few very fine roots; common very fine irregular pores; 35 percent gravel; strongly acid (pH 5.4).

TYPE LOCATION: Klickitat County, Washington; about one mile northeast of Trout Lake; 100 feet north and 1,700 feet east of the southwest corner of section 14, T. 6 N., R. 10 E. (Latitude 46 degrees, 00 minutes, 03 seconds N. and Longitude 121 degrees, 31 minutes, 14 seconds W)

RANGE IN CHARACTERISTICS: The mean annual soil temperature is 48 to 52 degrees F. The soil moisture control section is usually moist, but is dry in all parts for 45 to 60 consecutive days following summer solstice. The upper 24 to 40 inches has an estimated moist bulk density of 1.10 to 1.25 g/cc, volcanic glass content of 5 to 20 percent, acid oxalate extractable aluminum plus one-half iron of 0.4 to 1.0 percent, phosphate retention of 25 to 50 percent and 15 bar water retention of 5 to 10 percent. Depth to the buried A horizon is 24 to 40 inches. Rock fragments in the particle-size control section range from 5 to 35 percent. Below 40 inches rock fragments range from 20 to 35 percent. The umbric epipedon is 10 to 20 inches thich. Depth to redox concentrations is 40 to 60 inches.
The A horizon has value of 2 or 3 moist and chroma of 2 or 3 dry.
The Bw horizon has chroma of 2 to 4 dry and 2 or 3 moist. Texture is gravelly ashy loamy sand, gravelly ashy sandy loam or ashy sandy loam. Rock fragments range from 5 to 35 percent.
The C1 horizon has value of 5 or 6 dry and chroma of 2 to 4 dry, 2 or 3 moist. Texture is gravelly ashy loamy sand, gravelly ashy sandy loam or ashy sandy loam. Rock fragments range from5 to 35 percent.
The 2Ab horizon has chroma of 2 or 3 dry.
The 2Bwb horizon has value of 5 or 6 dry and chroma of 3 or 4 dry, 2 to 4 moist. Texture is gravelly loam or gravelly sandy loam. Rock fragments range from 20 to 35 percent.
The 2C2 horizon has hue of 7.5YR or 10YR. Texture is gravelly loam or gravelly sandy loam. Rock fragments range from 20 to 35 percent. Reaction is strongly or moderately acid.

COMPETING SERIES: These are the Gilligan, Harstine, Poulsbo, Sulsavar, Tenino and Vader series.
Gilligan soils have a mean annual soil temperature of 52 to 54 degrees F.; have an ochric epipedon; do not have buried A horizons within a depth of 60 inches; have 2C horizons with 2.5Y or 5Y hue and 40 to 65 percent channers
Harstine soils dry for 60 to 80 consecutive days following the summer solstice; have cemented 2Bsm horizons at a depth of 25 to 40 inches
Poulsbo soils dry for 60 to 80 consecutive days following the summer solstice; have cemented 2Bsm horizons at a depth of 25 to 40 inches
Sulsavar soils do not have redox concentrations (well drained); have highy stratified Bs horizons; have an ochric epipedon
Tenino soils dry for 60 to 80 consecutive days following the summer solstice; have cemented 2Bsm horizons at a depth of 25 to 40 inches
Vadar soils pscs with 0 to 30 percent sandstone parafragments and 30 to 60 percent coarser than vfs; do not have redox concentrations (well drained); have an ochric epipedon

GEOGRAPHIC SETTING: Flotag soils are on low terraces and have slopes of 0 to 2 percent. Elevation is 1,600 to 2,000 feet. The soils formed in mudflow deposits derived from mixed volcanic ash and basaltic and andesitic sand and gravel. Summers are warm and dry; winters are cool and wet, with snow cover from December through March. The mean annual precipitation is 47 to 53 inches. The average January temperature is 28 degrees F. and average July temperature is 67 degrees F. The mean annual temperature is 45 to 49 degrees F. The frost-free season is 90 to 110 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Firoke, Kingtain, and Trouter soils. Firoke and Kingtain soils are on mountains and are ashy-skeletal. Trouter soils are on plains, are ashy and are 20 to 40 inches deep to a lithic contact.

DRAINAGE AND PERMEABILITY: Moderately well drained; slow runoff; moderate permeability. An apparent seasonal high water table is at it's uppermost level from May to June.

USE AND VEGETATION: These soils are used for crop production and wildlife habitat. Corn silage, potatoes, and pasture are the principal crops. Native vegetation is Douglas-fir and ponderosa pine, with an understory of common snowberry, hardhack, elk sedge, pinegrass, and prince's pine.

DISTRIBUTION AND EXTENT: Klickitat County, Washington; MLRA 6. The series is of small extent.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon

SERIES ESTABLISHED: Klickitat County, Washington, 2003.

REMARKS: Diagnostic horizons and features recognized in this pedon are:
Umbric epipedon - the zone from 0 to 19 inches
Buried umbric epipedon - the zone from 34 to 56 inches
Particle-size control section - the zone from 10 to 40 inches
Vitrandic feature - the zone from 0 to 34 inches
This series needs further investigation as to the presence of andic properties in the buried soil (1Ab and 2Bwb).
Classification revision 9/93 from coarse-loamy, mixed, mesic Typic Xerumbrepts to coarse-loamy, mixed, mesic Vitrandic Xerumbrepts.
Classification revision 9/98 from coarse-loamy, mixed, mesic Vitrandic Xerumbrepts to coarse-loamy, isotic, mesic Vitrandic Dystroxerepts.

ADDITIONAL DATA: Partial laboratory data available for this soil, NSSL pedon number 40A3317.

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National Cooperative Soil Survey
U.S.A.