LOCATION HUTSINPILLAR CA

Established Series
Rev: ACF/JPS/ET
10/2016

HUTSINPILLAR SERIES

The Hutsinpillar series consists of very deep, very poorly drained soils in depressions in drainageways, alluvial fans, and uplifted marine terraces. These soils formed in alluvium derived from mixed sources. Slopes range from 0 to 9 percent. Mean annual precipitation is about 1780 millimeters (70 inches). Mean annual temperature is about 11 degrees C (52 degrees F).

TAXONOMIC CLASS: Fine, mixed, superactive, nonacid, isomesic Fluvaquentic Humaquepts

TYPICAL PEDON: Hutsinpillar clay loam - on a linear slope of 1 percent under pasture grasses at 34 meters (113 feet). (Colors are for moist soil unless otherwise noted. When described on August 30, 2007 the soil was moist throughout.)

A1--0 to 8 centimeters (0 to 3 inches); very dark brown (10YR 2/2) clay loam, grayish brown (10YR 5/2) dry; moderate very fine and fine subangular blocky structure; moderately hard, firm, slightly sticky and moderately plastic; many very fine and common fine and medium roots; common very fine and fine tubular and irregular pores; common fine prominent strong brown (7.5YR 4/6) iron accumulation along roots; strongly acid (pH 5.4); clear wavy boundary.

A2--8 to 28 centimeters (3 to 11 inches); very dark brown (10YR 2/2) clay loam, grayish brown (10YR 5/2) dry; moderate very fine and fine subangular blocky structure; moderately hard, firm, moderately sticky and moderately plastic; common very fine, fine, and medium roots; common very fine and fine tubular and irregular pores; common fine prominent strong brown (7.5YR 4/6) iron accumulation along roots and in matrix; strongly acid (pH 5.3); clear smooth boundary. (Combined thickness of the A horizons is between 25 and 35 centimeters)

Bg1--28 to 52 centimeters (11 to 20 inches); grayish brown (2.5Y 5/2) clay loam, light gray (2.5Y 7/2) dry; moderate fine and medium subangular blocky structure; moderately hard, firm, very sticky and very plastic; common very fine and fine roots; common very fine and fine tubular and irregular pores; many fine prominent strong brown (7.5YR 5/8) iron accumulation in matrix and common fine distinct gray (2.5Y 5/1) iron depletions in matrix; strongly acid (pH 5.3); gradual smooth boundary.

Bg2--52 to 75 centimeters (20 to 30 inches); grayish brown (2.5Y 5/2) clay, light brownish gray (2.5Y 6/2) dry; moderate fine and medium subangular blocky structure; hard, very firm, very sticky and very plastic; common very fine and fine roots; common very fine and fine irregular pores; many fine prominent strong brown (7.5YR 4/6) iron accumulation in matrix; moderately acid (pH 5.7); gradual smooth boundary. (Combined thickness of the upper Bt horizons is between 35 and 60 centimeters)

Bg3--75 to 95 centimeters (30 to 37 inches); grayish brown (2.5Y 5/2) clay, light brownish gray (2.5Y 6/2) dry; moderate fine and medium subangular blocky structure; extremely hard, very firm, very sticky and very plastic; moderately few very fine roots; moderately few fine irregular pores; many fine prominent strong brown (7.5YR 5/6) iron accumulation in matrix; slightly acid (pH 6.1); gradual smooth boundary.

Bg4--95 to 110 centimeters (37 to 43 inches); grayish brown (2.5Y 5/2) clay, light brownish gray (2.5Y 6/2) dry; weak fine and medium subangular blocky structure; extremely hard, very firm, very sticky and very plastic; very few very fine roots; very few very fine irregular pores; many medium prominent strong brown (7.5YR 5/8) iron accumulation in matrix; slightly acid (pH 6.1); clear smooth boundary.

Bg5--110 to 125 centimeters (43 to 49 inches); grayish brown (2.5Y 5/2) silty clay, light gray (2.5Y 7/2) dry; massive; extremely hard, very firm, very sticky and very plastic; very few very fine irregular pores; common fine prominent strong brown (7.5YR 4/6) iron accumulation in matrix; slightly acid (pH 6.1); clear smooth boundary.

Bg6--125 to 152 centimeters (49 to 60 inches); olive gray (5Y 5/2) silty clay, light gray (5Y 7/2) dry; massive; extremely hard, very firm, moderately sticky and very plastic; very few very fine irregular pores; few fine prominent strong brown (7.5YR 4/6) iron accumulation in matrix; neutral (pH 6.6). (Combined thickness of lower Bg horizons is 30 to 100 centimeters)

TYPE LOCATION: Del Norte County, California; approximately 15 meters (50 feet) north of Jay Wayne Lane; WGS84 Decimal degrees 41.84872 latitude and -124.13775 longitude; HBLM; USGS Crescent City Quadrangle, Ca., UTM Zone 10 405550mE 4633605mN; NAD83.

RANGE IN CHARACTERISTICS:

Soil Moisture: The soil is usually moist in all parts of the soil moisture control section between the depths of 10 to 30 centimeters (4 to 12 inches) in most years, and is saturated in some parts during the months of December through April. The soils have an aquic soil moisture regime.

Soil Temperature: The mean annual soil temperature at 50 centimeters (20 inches) is 10 to 13 degrees C (50 to 55 degrees F). The difference between average summer and winter soil temperatures is 2 to 4 degrees C. The soils have an isomesic soil temperature regime.

The umbric epipedon is 25 to 35 centimeters thick.

Depth to redoximorphic features is 0 to 10 centimeters.

Particle-Size Control Section (weighted average):

Clay content: 35 to 50 percent.

Some pedons have O horizons.

O horizon

Hue: 10YR.
Value: 2 through 6 dry and moist.
Chroma: 1 through 4 dry and moist.

Texture: slightly decomposed organic material.
Wood fragments: 0 to 35 percent.
Reaction: moderately to very strongly acid.

A horizon

Hue: 2.5Y or 10YR
Value: 4 or 5 dry, 2 or 3 moist
Chroma: 1 or 2 dry or moist

Texture of fine earth: clay loam
Clay content: 27 to 38 percent
Reaction: very strongly and strongly acid

Redoximorphic features: fine and medium iron-manganese masses in matrix and along root channels

Amount: few, common, or many
Hue: 7.5YR or 10YR
Value: 4 or 5 moist
Chroma: 4 through 8 moist

Upper Bg horizon

Hue: 2.5Y
Value: 6 through 8 dry, 4 through 6 moist
Chroma: 1 or 2 dry and moist

Texture of fine earth: silty clay loam, clay loam, sandy clay, silty clay, and clay
Clay content: 35 to 45 percent
Reaction: very strongly to moderately acid

Redoximorphic features: fine and medium iron-manganese masses in matrix and along root channels

Amount: few, common, and many
Hue: 10YR and 7.5YR
Value: 4 or 5 moist.
Chroma: 3 through 6 moist.

Redoximorphic features: fine and medium iron depletions

Amount: few, common, and many
Hue: 5Y or 2.5Y
Value: 3 through 5 moist.
Chroma: 1 or 2 moist.

Lower Bg horizon

Hue: 5Y or 2.5Y
Value: 6 through 8 dry, 4 through 6 moist
Chroma: 1 or 2 dry and moist

Texture of fine earth: sandy clay, silty clay, and clay
Rock fragments: 0 to 6 percent gravel
Clay content: 40 to 50 percent clay
Reaction: strongly acid to neutral

Redoximorphic features: fine and medium iron-manganese masses in matrix and along root channels

Amount: few, common, and many
Hue: 10YR and 7.5YR
Value: 4 or 5 moist.
Chroma: 4 through 8 moist.

Redoximorphic features: fine and medium iron depletions

Amount: few, common, and many
Hue: 5Y
Value: 3 through 5 moist.
Chroma: 1 or 2 moist.

COMPETING SERIES: This is the Chetco series. Chetco soils have silt loam or silty clay loam surface textures and a C horizon with massive structure within the particle size control section.

GEOGRAPHIC SETTING: Hutsinpillar soils are on depressions in drainageways, alluvial fans, and uplifted marine terraces. Slopes are 0 to 9 percent. These soils formed in alluvium derived from mixed sources. Elevation is 4 to 134 meters (10 to 440 feet). The climate is humid with cool, foggy summers and cool, wet winters. Mean annual precipitation is 1520 to 2030 millimeters (60 to 80 inches). Mean annual air temperature is 10 to 13 degrees C (50 to 55 degrees F). The mean January temperature is about 9 degrees C. The mean July temperature is about 14 degrees C. The frost free season is about 275 to 325 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Aubell, Talawa, and Timmons soils. Aubell soils are somewhat poorly drained with redoximorphic features greater than 25 centimeters from the soil surface. Talawa soils are coarse-loamy with less than 18 percent clay in the particle size control section. Timmons soils are fine-loamy with less than 35 percent clay in the particle size control section. The Aubell soils are on dissected fan remnants generally above the Huntsinpillar soils. The Talawa and Timmons soils are on dissected marine terrace remnants.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Very poorly drained; very high runoff; moderately low saturated hydraulic conductivity; rare flooding; frequent ponding.

USE AND VEGETATION: These soils are used for pasture and wildlife habitat. The natural vegetation is coast redwood, Sitka Spruce, with California huckleberry, cascara, salmonberry, deerfern, and western swordfern. Some areas have been cleared for pastureland have existing vegetation of perennial grasses, rushes, and sedges.

DISTRIBUTION AND EXTENT: Coastal Redwood Belt; MLRA 4B. The series is not extensive.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Davis, California

SERIES ESTABLISHED: Humboldt Del Norte counties, California, 2013. Name is from Huntsinpillar Creek.

REMARKS:

Diagnostic horizons and features recognized in this pedon are:
1. Umbric epipedon - the zone from 0 to 28 centimeters (A1 and A2 horizons).
2. Cambic horizon - the zone from 28 to 152 centimeters. (Bg1, Bg2, Bg3, Bg4, Bg5, and Bg6 horizons)
3. Particle-size control section - the zone from 25 to 100 centimeters (A2, Bg1, Bg2, Bg3, and Bg4 horizons) averaging 42 percent clay (by weight).
4. Aquic Conditions - the zone from 0 to 152 centimeters (A1, A2, Bg1, Bg2, Bg3, Bg4, Bg5, and Bg5)

ADDITIONAL DATA: University of California sample 64-Calif-8-4 was collected from the 1964 type location (Soils of Coastal Del Norte County California), sampled as Hutsinpillar.

NASIS User Pedon ID: 07CA605186

Soil classified using Keys to Soil Taxonomy, 12th edition.

National Cooperative Soil Survey
U.S.A.