LOCATION JUMMER                  WA+OR

Established Series
Rev. HRG/RWL/CEG
02/2025

JUMMER SERIES

Landscape--mountains, intermontane basins
Landform--mountain side slopes, hills, lava flows
Slope--2 to 65 percent
Parent material--residuum and colluvium from basalt or andesite, with loess and minor amounts of volcanic ash in the upper part
Mean annual precipitation--about 1000 mm
Mean annual air temperature--about 7 degrees C
Depth class--moderately deep
Drainage class--well drained
Soil moisture regime--xeric
Soil temperature regime--frigid
Soil moisture subclass--typic

TAXONOMIC CLASS: Loamy-skeletal, isotic, frigid Vitrandic Haploxeralfs

TYPICAL PEDON: Jummer very gravelly ashy sandy loam - forested, on a 63 percent southeast-facing slope at an elevation of 1175 m.

Oi--0 to 3 cm; slightly decomposed needles and twigs; abrupt smooth boundary. (3 to 5 cm thick)

A--3 to 10 cm; very gravelly ashy sandy loam, brown (10YR 4/3) dry, very dark grayish brown (10YR 3/2) moist; weak fine granular structure; soft, very friable, nonsticky and nonplastic; many very fine roots; many very fine irregular pores; 35 percent gravel and 5 percent cobbles; NaF pH 9.0; moderately acid (pH 5.9); abrupt smooth boundary. (5 to 15 cm thick)

Bw1--10 to 18 cm; gravelly ashy sandy loam, brown (7.5YR 4/3) dry, dark brown (7.5YR 3/3) moist; weak very fine and fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; many very fine roots; many very fine irregular pores; 30 percent gravel; NaF pH 9.0; moderately acid (pH 5.8); clear wavy boundary. (8 to 13 cm thick)

Bw2--18 to 53 cm; very gravelly ashy sandy loam, brown (7.5YR 5/4) dry; dark brown (7.5YR 3/4) moist; weak fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; many very fine roots; many very fine irregular pores; 35 percent gravel and 5 percent cobbles; NaF pH 9.0; moderately acid (pH 5.8); clear wavy boundary. (13 to 41 cm thick)

2Bt--53 to 86 cm; extremely gravelly loam, brown (7.5YR 5/4) dry, dark brown (7.5YR 3/4) moist; soft, very friable, slightly sticky and slightly plastic; few coarse and very fine roots; many very fine irregular pores; few faint clay films and clay bridging in pores; 40 percent gravel and 20 percent cobbles; NaF pH 8.4; moderately acid (pH 5.8); abrupt wavy boundary. (25 to 51 cm thick)

3R--86 cm; fractured Teanaway basalt.

TYPE LOCATION: Kittitas County, Washington, about 3 1/2 miles north of Lakedale; about 122 m north and 427 m east of the southwest corner of section 15, T. 21 N., R. 14 E.; USGS Cle Elum Lake, Washington topographic quadrangle; Latitude 47 degrees, 17 minutes, 48 seconds N. and Longitude 121 degrees, 4 minutes, 36 seconds W.

RANGE IN CHARACTERISTICS:

Soil Temperature: frigid regime
Mean annual soil temperature-- 5 to 8 degrees C
Moisture control section--20 to 60 cm; usually moist but dry in all parts of the moisture control section for 45 to 60 consecutive days following the summer solstice
Base saturation (by NH4OAC)--50 to 60 percent between depths of 25 and 75 cm below the soil surface
Depth to lithic contact with bedrock--50 to 100 cm

Particle-size control section
*Clay content--15 to 26 percent
*Rock fragment content--50 to 75 percent
Estimated properties, A and Bw horizons:
Thickness of soil with vitrandic properties: 20 to 56 cm
*Ammonium oxalate extractable Al plus 1/2 Fe--0.3 to 1.0 percent
*Medium to very coarse sand in the .02 to 2.0 mm fraction--greater than 50 percent
*P-retention--25 to 50 percent
*Volcanic glass content--7 to 60 percent
*1/3-bar bulk density--1.00 to 1.35 g/cm3
*1500 kPa water (air-dried samples)--5 to 12 percent

Oi horizon (and Oe horizon, present in some pedons)
*Thickness--3 to 5 cm

A horizon
Hue--7.5YR or 10YR, moist or dry
Value--2 to 4 moist, 4 or 5 dry
Chroma--2 or 3, moist or dry
Fine-earth texture--ashy loamy sand, ashy sandy loam
Clay content--2 to 15 percent
Total rock and pararock content--2 to 50 percent
Paragravel content--0 to 15 percent fine pumice
Total rock content--2 to 50 percent volcanic rock
Gravel content--2 to 40 percent
Cobble content--0 to 14 percent
Stone content--0 to 1 percent
Boulder content--0 to 1 percent
Reaction--strongly acid to slightly acid (pH 5.1 to 6.5)
Organic matter content--2.0 to 10.0 percent
Thickness--5 to 15 cm

Bw horizon (or AB horizon, where present)
Hue--7.5YR or 10YR, moist or dry
Value--3 or 4 moist, 4 to 7 dry
Chroma--3 or 4 moist, 3 to 6 dry
Fine-earth texture--ashy coarse sandy loam, ashy sandy loam, ashy loam
Clay content--2 to 15 percent
Total rock and pararock content--2 to 50 percent
Paragravel content--0 to 15 percent fine pumice
Total rock content--2 to 50 percent volcanic rock
Gravel content--2 to 40 percent
Cobble content--0 to 15 percent
Stone content--0 to 1 percent
Boulder content--0 to 1 percent
Reaction--strongly acid to slightly acid (pH 5.1 to 6.5)
Organic matter content--0.5 to 2.0 percent
Thickness--15 to 53 cm

2Bt horizons
Hue--7.5YR or 10YR, moist or dry
Value--3 or 4 moist, 5 or 6 dry
Chroma--4 to 6, moist or dry
Fine-earth texture--loam, clay loam
Clay content--10 to 35 percent
Total rock content--20 to 85 percent volcanic rock
Gravel content--0 to 45 percent
Cobble content--0 to 40 percent
Stone content--0 to 5 percent
Boulder content--0 to 1 percent
Reaction--moderately acid to neutral (pH 5.6 to 7.3)
Organic matter content--0 to 2.0 percent

COMPETING SERIES:
Agatha--100 to 150 cm to a lithic contact (deep)
Bennettcreek--ashy silt loam textures; less than 50 percent medium to very coarse sand in the .02 to 2.0 mm fraction above the lithologic discontinuity
Outland--subhumid mesothermal climate, with warm dry summers and cold moist winters; dry in soil moisture control section from July 15 to November 1 (107 days); paralithic contact with soft vesicular andesite between 50 and 100 cm
Rasser--greater than 200 cm deep (very deep)
Stevensgulch--greater than 200 cm deep (very deep); dry for 60 to 75 days in summer

GEOGRAPHIC SETTING:
Elevation--970 to 1800 m
Climate--cold, moist winters and warm, moderately dry summers
Mean annual air temperature-- 4 to 7 degrees C
Mean annual precipitation--890 to 1300 mm (but ranges down to 430 mm in the southern part of MLRA 6)
Frost-free period--65 to 100 days

GEOGRAPHICALLY ASSOCIATED SOILS:
Hawkslake--on scarps and hills on volcanic fields; ashy over loamy-skeletal particle-size class; paralithic contact greater than 115 cm from the surface (deep or very deep)
Jumpmore--on mountainsides
Jumpe--on convex mountain sides, smooth mountain summits and ridges; dry for 60 to 75 consecutive days; base saturation of 60 to 90 percent in the Bw horizon
Keechelus--on mountain sides and benches; clayey-skeletal argillic horizons; very deep
Kiper--on mountain sides; coarse-loamy, with 5 to 20 percent hard sandstone fragments in the control section; very deep
Rockyhole--on scarps and hills on volcanic fields; ashy over loamy-skeletal particle-size control section; depth to bedrock greater than 200 cm (very deep)
Standup--on mountain sides; formed in colluvium and residuum from rhyolite; sandy loam textures with 10 to 15 percent clay in the control section; chroma of 2 or 3 in the B and C horizons; very deep

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--well drained
Saturated hydraulic conductivity (Ksat)--moderately high

USE AND VEGETATION:
Use--Timber production, livestock grazing, wildlife, recreation, and watershed
Vegetation--Douglas-fir, grand fir, ponderosa pine, elksedge, pinegrass, common snowberry, princes pine, and pinemat manzanita

DISTRIBUTION AND EXTENT: Cascade Mountains, Eastern Slope, Washington and Oregon; MLRA 6. This series is of small extent.

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Bozeman, Montana

SERIES ESTABLISHED:
Kittitas County, Washington, 2009

REMARKS:
Diagnostic horizons and features in this pedon
*Ochric epipedon
*Volcanic glass--zone from 3 to 53 cm (A and Bw horizons)
*Cambic horizon--zone from 10 to 53 cm (Bw horizons)
*Lithologic discontinuity--at 53 cm (at the top of the 2Bt horizon)
*Argillic horizon--zone from 53 to 86 cm (2Bt horizon)
*Lithic contact--contact with basalt bedrock at 86 cm (at the top of the R horizon)
*Particle-size control section--zone from 53 to 86 cm (2Bt horizon)

NASIS Site and Pedon ID--1998WA037001

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National Cooperative Soil Survey
U.S.A.