LOCATION KENAI                   AK

Established Series
Rev. SR/DVP/DLM
05/2022

KENAI SERIES

Depth class: very deep
Drainage class: well
Parent material: ash influenced loess over clayey till
Landform: moraines on till plains
Mean annual precipitation: 18 to 25 inches
Mean annual temperature: 35 to 40 degrees

KENAI SERIES

TAXONOMIC CLASS: Medial over loamy, amorphic over mixed, superactive Andic Haplocryods

TYPICAL PEDON: Kenai silt loam -- forest (All colors are for moist soil)

Oe--0 to 2 inches; dark reddish brown (5YR 2/2) moderately decomposed plant material; many very fine, fine, medium, and coarse roots; extremely acid (pH 4.2); abrupt smooth boundary. (1 to 5 inches thick)

E--2 to 5 inches; dark gray (5Y 4/1) silt loam; weak fine granular structure; very friable, nonsticky and nonplastic; many very fine and fine roots, common medium roots, and few coarse roots; nonsmeary; extremely acid (pH 4.4); abrupt irregular boundary. (1 to 4 inches thick)

Bs--5 to 15 inches; dark brown (7.5YR 3/4) silt loam; weak fine granular structure; very friable, nonsticky and nonplastic; common very fine roots, few fine, medium, and coarse roots; slightly smeary; moderately acid (pH 5.6); clear wavy boundary. (3 to 15 inches thick)

Bw--15 to 19 inches; brown (10YR 4/3) and dark olive brown (2.5Y 3/3) silt loam; weak fine granular structure; very friable, nonsticky and nonplastic; few very fine, fine and medium roots; slightly smeary; slightly acid (pH 6.1); clear wavy boundary. (3 to 8 inches thick)

2BC--19 to 24 inches; olive brown (2.5Y 4/3) very fine sandy loam; weak fine granular structure; very friable, nonsticky and nonplastic; few very fine and fine roots; 2 percent gravel; slightly acid (pH 6.2); gradual boundary. (4 to 12 inches thick)

3C1--24 to 32 inches; olive (5Y 4/3) silty clay loam; moderate medium subangular blocky structure; firm, slightly sticky and plastic; few very fine and fine roots; 1 percent gravel; moderately acid (pH 6.0); gradual smooth wavy boundary. (5 to 10 inches thick)

3C2--32 to 60 inches; olive gray (5Y 4/2) silty clay loam; moderate medium subangular blocky structure; firm, slightly sticky and plastic; firm, slightly sticky and plastic; slightly acid (pH 6.1).

TYPE LOCATION: Western Kenai Peninsula Area, Alaska; about 1/4 mile west of Union Lake, Alaska; in the SE 1/4, NE 1/4, section 16, T. 5 N., R. 10 W.; Kenai C3 SW 1:25,000 quad, Seward Meridian; UTM north 6711395 and UTM 607716, zone 5.

RANGE IN CHARACTERISTICS:
Solum thickness: 14 to 20 inches
Depth to firm till substratum: 10 to 24 inches.

O horizon:
Matrix color: hue of 7.5YR or 10YR; value of 2 to4; chroma of 1 to 4
Reaction class: extremely acid to strongly acid
E horizon:
Matrix color: hue of 10YR to 5Y; value of 4 or 5; chroma of 1 or 2
Texture: silt loam, very fine sandy loam
Reaction class: extremely acid to strongly acid

Bs horizon:
Matrix color: value of 3 to 5; chroma 0f 2 to 4
Texture: silt loam, very fine sandy loam
Reaction class: very strongly acid to moderately acid

Bw horizon:
Matrix color: hue of 10YR or 2.5Y; value of 3 to 5; chroma of 3 to 6
Texture: silt loam, very fine sandy loam
Reaction class: strongly acid to slightly acid

2BC horizon:
Matrix color: hue of 10YR or 2.5Y; value of 3 to 5; chroma of 3 to 5
Texture: very fine sandy loam, silt loam, loam
Reaction class: strongly acid to slightly acid

3C horizon:
Matrix color: hue of 10YR to 5Y; value of 4 or 5; chroma of 2 to 4
Mottles: occasionally present
Texture: loam, silt loam, silty clay loam modified by 0 to 15 percent gravel
Clay content: 20 to 35 percent
Consistence: firm or very firm
Reaction class: moderately acid or slightly acid

COMPETING SERIES: These are the Cohoe, Mutnala, Naptowne, Whitsol series. Cohoe, Naptowne, Mutnala, and Whitsol soils have less than 20 percent clay in the substratum.

GEOGRAPHIC SETTING:
Drainage class: well
Parent material: ash influenced loess over clayey till
Landform: moraines on till plains
Mean annual temperature: 35 to 40 degrees
Mean annual precipitation: 18 to 25 inches

GEOGRAPHICALLY ASSOCIATED SOILS:

DRAINAGE AND PERMEABILITY: Well drained, low to very high runoff. Saturated hydraulic conductivity is high in the solum and moderately low to moderately high in the till.

USE AND VEGETATION: Mostly in forest consisting of white spruce and paper birch with some quaking aspen and cottonwood. Some areas are cleared and used for grasses, potatoes, and other vegetables.

DISTRIBUTION AND EXTENT: MLRA 224 Cook Inlet Lowlands South-central Alaska. The series is of moderate extent.

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: WASILLA, ALASKA

SERIES ESTABLISHED: Kenai-Kasilof Area, Alaska. 1960.

REMARKS:
Albic horizon 2 to 5 inches
Spodic horizon: 5 to 15 inches
Andic properties: 5 to 19 inches

Additional data: Soil Characterization sample 01AK122002 from Western Kenai Peninsula Area, Alaska, sampled by SSL Lincoln, NE 07/2001. The sampled profile is the typifying pedon for this soil.

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National Cooperative Soil Survey
U.S.A.