LOCATION NARADA                  WA

Established Series
IRD. SMB/PHR/MPR
07/2017

NARADA SERIES

Landscape--Cascade Mountains
Landform--flood plains and terraces of river valley bottoms
Slope--0 to 15 percent
Parent material--alluvium derived from andesite mixed with volcanic ash
Mean annual precipitation--about 2000 mm
Mean annual air temperature--about 5 degrees C
Depth class--very deep
Drainage class--moderately well drained
Soil moisture regime--udic
Soil temperature regime--cryic
Soil moisture subclass--aquic

TAXONOMIC CLASS: Ashy, glassy Aquandic Dystrocryepts

TYPICAL PEDON: Narada ashy very fine sandy loam on a forested flood plain with a slope of 4 percent and at an elevation of 775 m (When described on May 16, 2012, the soil was moist throughout.)

Oe--0 to 3 cm; moderately decomposed plant material; common very fine and fine and few medium and coarse roots; very strongly acid (pH 4.5); clear wavy boundary

A--3 to 7 cm; ashy very fine sandy loam, dark grayish brown (10YR 4/2) dry, very dark brown (10YR 2/2) moist; weak fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; few very fine to coarse roots; common fine irregular pores; 5 percent fine gravel; strongly acid (pH 5.4); clear wavy boundary

AB--7 to 51 cm; ashy coarse sandy loam, gray (10YR 5/1) dry, very dark gray (10YR 3/1) moist; weak fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; few very fine roots; common fine irregular pores; strongly acid (pH 5.4); abrupt smooth boundary

Bw--51 to 75 cm; ashy coarse sandy loam, dark gray (10YR 4/1) dry, black (10YR 2/1) moist; weak fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; few very fine roots; common fine irregular pores; 5 percent dark reddish brown (5YR 3/4) masses of oxidized iron with diffuse boundaries along root channels; strongly acid (pH 5.4); abrupt smooth boundary

Bg1--75 to 90 cm; ashy loamy very fine sand, dark gray (10YR 4/1) dry, black (10YR 2/1) moist; weak fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; few very fine roots; common fine interstitial pores; 5 percent dark reddish brown (5YR 3/4) masses of oxidized iron with diffuse boundaries along root channels and 2 percent gray (10YR 6/1) iron depletions in matrix; strongly acid (pH 5.4); abrupt wavy boundary

Bg2--90 to 110 cm; gravelly ashy sandy loam, light brownish gray (10YR 6/2) dry, dark grayish brown (10YR 4/2) moist; moderate fine subangular blocky structure; soft, very friable, slightly sticky and slightly plastic; few very fine roots; common fine irregular pores; 5 percent yellowish red (5YR 4/6) masses of oxidized iron with diffuse boundaries along root channels and 2 percent gray (10YR 6/1) iron depletions in matrix; 10 percent fine gravel, 10 percent medium and coarse gravel, and 5 percent cobbles; moderately acid (pH 5.7); abrupt wavy boundary

Bg3--110 to 150 cm; gravelly ashy sandy loam, light brownish gray (10YR 6/2) dry, dark grayish brown (10YR 4/2) moist; moderate fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; few very fine roots; common fine irregular pores; 5 percent yellowish red (5YR 4/6) masses of oxidized iron with diffuse boundaries along root channels and 2 percent gray (10YR 6/1) iron depletions in matrix; 10 percent fine gravel, 15 percent medium and coarse gravel, and 5 percent cobbles; moderately acid (pH 5.7)

TYPE LOCATION: Pierce County, Washington, about 3.3 km north of Washington State Route 706, along West Side Road in Mount Rainier National Park; about 285 m north and 60 m west of the southeast corner of section 23, T. 14 N., R. 7 E., Willamette Meridian; Mount Wow, Washington, U.S. Geological Survey quadrangle; latitude 46.76694 degrees north, longitude -121.87720 degrees west, datum WGS 84 (coordinates determined with a GPS)

RANGE IN CHARACTERISTICS:
Mean annual soil temperature--4 to 8 degrees C
Soil moisture control section--dry less than 45 consecutive days in June through October
Depth to redoximorphic iron depletions--50 to 75 cm below the mineral soil surface
Thickness of cambic horizon--greater than 40 cm

All mineral horizons
*Organic carbon content--less than 0.6 percent
*Ammonium oxalate Al plus 1/2 Fe--less than 0.4 percent
*Volcanic glass content--50 to 75 percent glass and glass-coated minerals
*Reaction--5.1 to 6.0

Particle-size control section
*Clay content--1 to 7 percent
*Rock fragment content--0 to 35 percent total, including 0 to 30 percent gravel, 0 to 20 percent cobbles, and 0 to 10 percent stones

Oi horizon (where present)
*Thickness--0 to 3 cm

Oe horizon
*Thickness--3 to 7 cm

A horizon
*Value--2 or 3 moist, 3 to 5 dry
*Chroma--1 or 2 moist or dry
*Fine-earth texture--ashy very fine sandy loam, ashy sandy loam
*Clay content--0 to 7 percent
*Rock fragment content--0 to 15 percent total, including 0 to 15 gravel and 0 to 5 percent cobbles
*Thickness--4 to 20 cm

AB horizon
*Value--2 or 3 moist, 3 to 5 dry
*Chroma--1 to 3 moist or dry
*Fine-earth texture--ashy coarse sandy loam, ashy sandy loam, ashy loamy very fine sand
*Clay content--0 to 7 percent
*Rock fragment content--0 to 15 percent total, including 0 to 15 percent gravel and 0 to 5 percent cobbles
*Thickness--40 to 60 cm

Bw horizon
*Value--2 or 3 moist, 3 to 5 dry
*Chroma--1 to 3 moist or dry
*Fine-earth texture--ashy coarse sandy loam, ashy sandy loam, ashy loamy sand
*Clay content--0 to 7 percent
*Rock fragment content--0 to 15 percent total, including 0 to 15 percent gravel and 0 to 5 percent cobbles
*Thickness--15 to 35 cm

Bg2 horizon
*Value--2 or 3 moist, 3 to 5 dry
*Chroma--1 to 3 moist or dry
*Fine-earth texture--ashy loamy very fine sand, ashy sandy loam, ashy loamy sand
*Rock fragment content--0 to 25 percent total, including 0 to 10 percent fine gravel, 0 to 10 percent medium and coarse gravel, and 0 to 5 percent cobbles
*Thickness--10 to 20 cm

Bg3 and Bg4 horizons
*Value--2 to 4 moist, 3 to 6 dry
*Chroma--1 to 3 moist or dry
*Fine-earth texture--ashy sandy loam, ashy coarse sandy loam, ashy loamy sand
*Rock fragment content--0 to 35 percent total, including 0 to 20 percent fine gravel, 0 to 20 percent medium and coarse gravel, 0 to 10 percent cobbles, and 0 to 10 percent stones
*Combined thickness--15 to 85 cm

COMPETING SERIES: None

GEOGRAPHIC SETTING:
Elevation--530 to 1500 m
Climate--cool, dry summers; cold, wet winters
Mean annual precipitation--1600 to 2700 mm
Mean annual air temperature--3 to 7 degrees C
Frost-free period--80 to 110 days

GEOGRAPHICALLY ASSOCIATED SOILS:
Flett--more than 35 percent rock fragments in particle-size control section; on similar landforms
Frogheaven--aquic conditions within 25 cm of the mineral soil surface; in depressions of flood plains and terraces
Longmire, Vantrump--formed in volcanic ash and colluvium; on nearby valley walls and debris aprons; andic soil properties throughout

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--moderately well drained
Frequency of flooding--rare
Saturation in normal years--below a depth of 50 to 75 cm in November through May, below a depth of 150 cm in June through October
Saturated hydraulic conductivity (Ksat)--high or very high throughout

USE AND VEGETATION:
Use--wildlife habitat, recreation
Potential natural vegetation--black cottonwood, Pacific silver fir, Engelmann spruce, Sitka alder, western hemlock, western redcedar, Douglas-fir, vine maple, western swordfern, red huckleberry, black huckleberry, five-leaved bramble, prince's pine, fireweed, Barclay's willow

DISTRIBUTION AND EXTENT: Central Cascade Mountains, Washington; MLRA 3; moderate extent

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon

SERIES ESTABLISHED: Mount Rainier National Park, Pierce County, Washington: 2014; name from Narada Falls in Mount Rainier National Park

REMARKS:
Diagnostic horizons and other features in this pedon
*Particle-size control section--zone from 28 to 103 cm
*Ochric epipedon
*Cambic horizon--zone from 3 to 51 cm
*Volcanic glass--zone from 3 to 150 cm
*Redoximorphic iron concentrations--zone from 51 to 150 cm
*Redoximorphic iron depletions with chroma of 2 or less--zone from 75 to 150 cm

7/2017--This official series description was updated according to SSR1 Technical Note 11--Content and Format of Official Series Descriptions (revised 12/2015). Most of the changes were in formatting; no major technical changes were made.

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National Cooperative Soil Survey
U.S.A.