LOCATION FLANLY CA

Established Series
Rev. DJL/DJE/AJT/FJP/AGB/TKK/JTW
12/2018

FLANLY SERIES

The Flanly series consists of moderately deep, well drained soils formed in material derived from intrusive igneous rocks, such as granodiorite, quartz diorite and diorite. Flanly soils are on hills and have slopes of 2 to 75 percent. The mean annual precipitation is about 700 mm and the mean annual temperature is about 16 degrees C.

TAXONOMIC CLASS: Fine-loamy, mixed, active, thermic Ultic Haploxeralfs

TYPICAL PEDON: Flanly sandy loam - on a west facing, linear, slope of 5 percent under blue oak, live oak, shrubs, forbs and annual grasses at an elevation of 580 meters. (Colors are for dry soil unless otherwise noted. When described on August 27, l985, the soil was dry throughout.)

A--0 to 8 cm; brown (7.5YR 5/4) sandy loam, dark brown (7.5YR 3/4) moist; moderate fine subangular blocky structure; slightly hard, very friable, nonsticky and slightly plastic; common very fine and fine roots; common very fine and fine interstitial pores and common very fine tubular pores; 5 percent gravel, 5 percent cobbles; slightly acid (pH 6.5); clear smooth boundary. (5 to 13 cm thick)

BAt--8 to 23 cm; strong brown (7.5YR 5/6) sandy loam, dark brown (7.5YR 3/4) moist; weak medium subangular blocky structure; slightly hard, friable, nonsticky and slightly plastic; many fine and common very fine roots; common very fine and fine tubular pores; few thin clay films lining pores and bridging sand grains; 2 percent stones, moderately acid (pH 6.0); gradual smooth boundary. (10 to 20 cm thick)

Bt1--23 to 41 cm; strong brown (7.5YR 5/6) sandy loam, dark brown (7.5YR 3/4) moist; weak medium subangular blocky structure; hard, friable, slightly sticky and slightly plastic; common very fine and medium and many fine roots; common very fine and fine tubular pores; few thin clay films lining pores and bridging sand grains; 2 percent stones; moderately acid (pH 5.8); gradual smooth boundary. (13 to 23 cm thick)

Bt2--41 to 61 cm; strong brown (7.5YR 5/6) loam, strong brown (7.5YR 4/6) moist; weak medium subangular blocky structure; hard, friable, slightly sticky and slightly plastic; common fine and few very fine and medium roots; common very fine tubular pores; common moderately thick clay films lining pores and few thin clay films on ped faces; 2 percent stones; moderately acid (pH 5.8) gradual smooth boundary. (15 to 25 cm thick)

Bt3--61 to 86 cm; mixed strong brown (7.5YR 5/6) and strong brown (7.5YR 5/8) loam, strong brown (7.5YR 4/6) moist; moderate medium subangular blocky structure; very hard, friable, slightly sticky and slightly plastic; few very fine, fine and medium roots; common very fine tubular pores; common moderately thick clay films lining pores and few thin clay films on ped faces; 2 percent stones; moderately acid (pH 5.8) abrupt wavy boundary. (7 to 40 cm thick)

Cr--86 to 102 cm; reddish yellow (7.5YR 6/8) weathered granodiorite, strong brown (7.5YR 5/6) moist; common moderately thick strong brown (7.5YR 4/6) clay films on fracture faces; slightly acid (pH 6.5).

TYPE LOCATION: Yuba County, California; about 3 km (1.9 miles) north of Marysville Road on Indiana School Road, then 275 meters (900 feet) south on dirt road; about 2,450 feet south and 1,550 feet west of the northeast corner of Section 30, T. 18. N, R. 7. E, MDBM. USGS 7.5 minute Topographic Quadrangle: Challenge, CA. WGS84 39.3898811 latitude and -121.2268753 longitude. UTM Zone 10 652697 meters E 4361543 meters N, NAD83.

RANGE IN CHARACTERISTICS:
Ochric epipedon thickness: 5 to 26 cm
Argillic horizon thickness: 40 to 70 cm
Depth to a paralithic contact: 50 to 100 cm

Soil moisture: The soil moisture control section is dry in all parts from about May to October. The soils have a xeric moisture regime.

Soil temperature: The mean annual soil temperature at a depth of 50 cm ranges from 15 to 18 degrees C. The soils have a thermic temperature regime.

Base saturation by sum of cations is less than 75 percent in one or more subhorizons of the upper 75 cm of the argillic horizon, or above the paralithic contact, whichever is shallower.

A horizons
Hue: 7.5YR, 10YR
Value: 4 to 6 dry; 3 or 4 moist (less than 3 moist in upper 5 - 10 cm)
Chroma: 2 to 6 dry or moist
Texture: sandy loam, loam
Clay content: 8 to 20 percent
Rock Fragments: 0 to 15 percent total
0 to 10 percent gravel
0 to 10 percent cobbles
0 to 3 percent stones
Reaction: moderately to slightly acid

Bt horizons
Hue: 15YR, 7.5YR, 10YR
Value: 3 to 7 dry; 3 to 5 moist
Chroma: 4 to 8 dry; 4 to 6 moist
Texture: sandy loam, loam, sandy clay loam, clay loam
Clay content: 18 to 35 percent
Rock Fragments: 0 to 40 percent total
0 to 40 percent gravel
0 to 10 percent cobbles
0 to 3 percent stones
Reaction: strongly to slightly acid

COMPETING SERIES:
These are the Coombs (MLRA 14), Craigsaddle, Millvilla, Motherlode, Sierra, Thompsonflat (MLRA 17), Verjeles, Wardsferry, and Yellowlark (MLRA 17) soils. Coombs and Thompsonflat soils do not have a root-restrictive layer in the series control section and formed in mixed alluvium. Craigsaddle soils are 100 to 150 cm to a densic contact. Millvilla soils are 50 to 100cm to a paralithic contact with metasedimentary rock and lack sandy loam or sandy clay loam textures in the argillic. Motherlode soils are 100 to 150 centimeters to a lithic contact with metavolcanic rock. Sierra soils are 100 to over 150 centimeters to a paralithic contact. Verjeles soils have 2Bt horizons with clay content ranging from 40 to 60 percent. Wardsferry soils are 100 to 150 cm to a paralithic contact with metasedimentary rock. Yellowlark soils are 100 to 150 centimeters to a duripan and formed in mixed alluvium.

GEOGRAPHIC SETTING: Flanly soils are on backslopes of hills. Slopes range from 2 to 75 percent. The soils formed from intrusive igneous rock, including granodiorite, diorite, and quartz diorite. Elevations are 235 meters to 750 meters. The climate is Mediterranean, with hot, dry summers and cool, moist winters. The average annual precipitation is 600 to 1300 mm. The average January temperature is 8 degrees C.; the average July temperature is 25 degrees C; mean annual air temperature is 14 to 17 degrees C. The frost-free season is 235 to 260 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Mildred, Orose, Sierra, and Verjeles soils. Mildred soils have greater than 35 percent clay in the particle-size control section and are on mountain slopes. Orose soils have a paralithic contact between 25 and 50 cm and occur on shoulders of hills. Sierra soils are 100 to over 150 cm to a paralithic contact and occur in similar positions as Flanly. Verjeles soils are moderately well drained and occur on footslopes of hills.

DRAINAGE AND PERMEABILITY: Well drained; saturated hydraulic conductivity is moderately low in the soil and moderately low to high in the bedrock.

USE AND VEGETATION: These soils are mainly used for livestock grazing, wildlife habitat, watershed and homesite development. Natural vegetation is blue oak, interior live oak, foothill pine and scattered ponderosa pine with an understory of brush, forbs and annual grasses.

DISTRIBUTION AND EXTENT: Sierra Nevada Foothills of California; MLRA 18. The series is not extensive.

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

SERIES ESTABLISHED: Yuba County, California, l992.

REMARKS:

Particle Size Control Section for this pedon: 23 to 73 cm

Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon: 0 to 23 cm
Argillic horizon: 23 to 86 cm
Paralithic contact: 86 cm

Flanly soils were mapped as Auberry and Sierra soils in the "Soils of the Yuba Area", University of California, Davis and Yuba County, l969.

ADDITIONAL DATA:

NASIS User Pedon ID: 85CA115011
Pedon purpose: laboratory sampling location
Lab Source ID: SSL
Lab Pedon #: 86P0176

The soil was classified using the 12th edition of the Keys to Soil Taxonomy.

National Cooperative Soil Survey
U.S.A.