LOCATION HENLEY                  OR+CA

Established Series
Rev. JSC/AON/TDT/BTH/CEG
02/2024

HENLEY SERIES

Landscape--Intermontane basins
Landform--terraces
Slope--0 to 2 percent
Parent material--mixed alluvium weathered from diatomite, tuff, basalt, and ash
Mean annual precipitation--about 305 mm
Mean annual air temperature--about 8.9 degrees C
Depth class--moderately deep
Drainage class--somewhat poorly drained
Soil moisture regime--aridic
Soil temperature regime--mesic
Soil moisture subclass--aquic

TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, mesic Aquic Haplodurids

TYPICAL PEDON: Henley loam, cultivated

Ap--0 to 13 cm; loam, light gray (10YR 7/1) dry, dark grayish brown (10YR 4/2) moist; weak fine granular structure; soft, friable, slightly sticky and slightly plastic; few very fine roots; many very fine pores; strongly effervescent; SAR is 52 and EC is 6; strongly alkaline (pH 8.9); clear smooth boundary

Akz--13 to 28 cm; loam, light brownish gray (10YR 6/2) dry, very dark grayish brown (10YR 3/2) moist; weak coarse prismatic structure; hard, friable, slightly sticky and slightly plastic; few very fine roots; many very fine tubular pores; strongly effervescent; SAR is 17 and EC is 2; strongly alkaline (pH 8.9); clear smooth boundary

Bkz1--28 to 51 cm; loam, light gray (10YR 7/2) dry, brown (10YR 4/3) moist; weak coarse prismatic structure parting to weak medium subangular blocky structure; very friable, slightly sticky and slightly plastic; few very fine roots; many very fine tubular pores; strongly effervescent; SAR is 14 and EC is 2; strongly alkaline (pH 8.5); clear smooth boundary

Bkz2--51 to 64 cm; fine sandy loam, light gray (10YR 7/2) dry, brown (10YR 4/3) moist; weak fine subangular blocky structure; very friable, slightly sticky and nonplastic; few very fine roots; few very fine tubular pores; strongly effervescent; SAR is 14 and EC is 2; strongly alkaline (pH 8.5); clear wavy boundary

BCk--64 to 91 cm; sandy loam, light gray (10YR 7/1) dry, brown (10YR 5/3) moist; massive; very friable, nonsticky and nonplastic; few very fine roots; many very fine tubular pores; firm, weakly cemented aggregates in upper 15 cm; strongly effervescent; SAR is 8 and EC is 1 mmhos; moderately alkaline (pH 8.4); abrupt smooth boundary

2Ckqm--91 to 107 cm; duripan, dark grayish brown (10YR 4/2) moist; plate-like; indurated; continuous opaline laminar cap at top of duripan; strongly effervescent; moderately alkaline (pH 8.4)

TYPE LOCATION: Klamath County, Oregon; about 2.4 km east of the town of Dairy in Yonna Valley; 580 m west and 500 m south of the northeast corner of section 35, T. 38 S., R. 11-1/2 E., Willamette Meridian; Bonanza, Oregon USGS 7.5 Minute Topographic Quadrangle; latitude 42.23389 degrees north, longitude 121.4928 degrees west, datum WGS 84 (coordinates derived from topographic map legal description)

RANGE IN CHARACTERISTICS:
Soil temperature regime--mesic
Mean annual soil temperature-- 8 to 11 degrees C
Soil moisture control section--20 to 60 cm; seasonally high water table (episaturation), perched above the duripan, can saturate lower portions of the control section between March and August
SAR--greater than 13 percent in all or part of the upper 50 cm of the profile, decreasing with depth below 50 cm
EC--2 to 8 mmhos/cm3 above the duripan
Depth to indurated duripan--50 to 100 cm

Particle-size control section:
*Clay content--10 to 18 percent

Ap and Akz horizonsc
Value--6 or 7 dry, 3 or 4 moist
Chroma--1 or 2 dry or moist
Fine-earth texture--loam, sandy loam, loamy fine sand
Clay content--5 to 25 percent
Reaction--strongly or very strongly alkaline (pH 8.5 or greater)
Thickness--15 to 75 cm, combined

Bkz and BCk horizons
Hue--10YR or 2.5Y dry or moist
Value--6 to 8 dry, 3 to 5 moist
Chroma--1 or 2 dry, 1 to 3 moist
Fine-earth texture--loam, silt loam, fine sandy loam, sandy loam
Clay content--10 to 25 percent
Reaction--moderately or strongly alkaline (pH 7.9 to 9.0)
Thickness--25 to 80 cm, combined

2Ckqm horizon (durpian)
Opal--indurated laminar cap; vertical coatings and laminar layers
Reaction--moderately or strongly alkaline (pH 7.9 to 9.0)
Thickness--13 to 90 cm

COMPETING SERIES: Gazelle--SAR less than 8 throughout the profile; lacks natric horizon; mean annual soil temperature greater than 11 degrees C

GEOGRAPHIC SETTING:
Elevation--1230 to 1463 m
Climate--semiarid with warm dry summers and cold moist winters
Mean annual air temperature-- 7 to 11 degrees C
Mean annual precipitation--254 to 550 mm
Mean January temperature--about -2 degrees C
Mean July temperature--about 19 degrees C
Frost-free period--50 to 110 days

GEOGRAPHICALLY ASSOCIATED SOILS:
Calimus-on terraces and fans; mollic epipedon; well drained; nonsodic; lacks a duripan
Fordney-on lake terraces, stream terraces, and fan remnants; mollic epipedon; sandy particle-size control section; deep
Hosley-on low terraces; mollic epipedon; natric horizon
Laki-on terraces; mollic epipedon; lacks a duripan; ESP erratic throughout profile

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--somewhat poorly drained
Saturated hydraulic conductivity (Ksat)--moderately high or high above duripan
Saturation in normal years--episaturation (above the duripan); water table is highest in March through May

USE AND VEGETATION:
Use--homesites; irrigated pasture, barley, and alfalfa
Vegetation--inland saltgrass, alkali greasewood, green rabbitbrush

DISTRIBUTION AND EXTENT: Klamath and Shasta Valleys and Basins, OR and CA; MLRA 21; moderately extensive

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Davis, California

SERIES ESTABLISHED:
Klamath County, Oregon, 1977

REMARKS:
Diagnostic horizons and features in this pedon
*Ochric epipedon
*Natric horizon--Akz, Bkz1, Bkz2
*Aquic conditions--BCk
*Episaturation--BCk
*Duripan--2Ckqm
*Particle-size control section--zone from 25 to 91 cm

1986: The particle-size class (family) was changed from fine-loamy to coarse-loamy. By field texture and PSDA, the clay content is 10 to 18 percent. However, laboratory data indicate that these soils have a high 15-bar water to clay ratio and 2.5 times the 15-bar water place this soil in a fine particle-size class. The high 15-bar water content is attributed to the kind of parent material, of which diatoms make up an appreciable part. The soil behavior is more like a coarse-loamy particle-size class; therefore, the placement is made on the basis of field estimates and PSDA.

03/2003: The superactive cation exchange activity class was added to the taxonomic classification by the National Soil Survey Center on request of the Reno MLRA office, without review of the soil series property data. The remainder of this document has not been updated.

01/2024: updates to this document were formatting and to the competing series section; The superactive cation exchange activity class was confirmed by KSSL sample 67C0034 (NASIS pedon and user site ID S1967OR035002).

ADDITIONAL DATA:
NASIS SITE ID--S1967OR035005; NASIS PEDON ID--S1967OR035005

Characterization data on 2 profiles (S67 Oreg. 18-2 and 18-5) reported in Riverside Soil Survey Laboratory report for Henley soils sampled in Klamath county, Oregon, 1967. Profile 18-5 is the type location.

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National Cooperative Soil Survey
U.S.A.