Soil series profile

Kindy soil series

Kindy is a moderately well drained soil with a gravelly medial silt loam surface, mapped on 36,015 acres in 4 counties in WA. Hydrologic group C.

#7420 by mapped area medial-skeletal Andic Haplocryods (Spodosols)

Drainage class: Moderately well drained
Hydrologic group: C
Typical topsoil pH: 5.0
Mapped area: 36k

Typical Kindy profile

Texture and pH by depth

Depth to scale. More strongly shaded layers hold more clay. Horizon names are the soil survey's (A = topsoil, B = subsoil, C = parent material).

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Typical Kindy horizons (representative values)
Depth	Texture	pH	Clay	Sand	Organic matter
0–4 in (H1)	Gravelly medial silt loam	5.0	15%	14%	7.5%
4–10 in (H2)	Gravelly medial silt loam	5.0	10%	21%	3.5%
10–24 in (H3)	Very gravelly medial loam	5.0	10%	45%	1.5%
24–34 in (H4)	Very gravelly loam	5.0	10%	45%	0.75%
34–60 in (H3)	Very gravelly loam	5.0	10%	45%	0.75%

Representative values from the most extensive Kindy map unit (Kindy gravelly silt loam, 30 to 65 percent slopes, survey area WA657). Other map units of this series vary within the series range.

Stock photo for illustration, not a sample of this soil series. Credit on the Sources & method page.

What this means

What Kindy soil means for gardens, lawns and septic systems

For gardens

Typical topsoil in Kindy soils is very strongly acidic: pH 5.0. Most vegetables and lawn grasses do best around 6.0 to 7.0, so lime is often needed; blueberries, azaleas and rhododendrons like it as it is.

Loamy topsoil (loam, silt loam and similar) covers 98% of mapped Kindy acres: generally the easiest soil to garden, holding moisture without staying waterlogged. The most common surface texture is gravelly medial silt loam (81% of mapped Kindy acres).

100% of mapped Kindy acres is moderately well to excessively drained, which suits most garden plants.

For lawns and yards

On 98% of mapped acres, rain soaks in slowly (hydrologic groups C and D, including dual groups that are D until drained). Expect runoff and puddles after heavy rain: core-aerate compacted lawns and keep ground sloping away from foundations.

For a septic system

For conventional septic absorption fields, NRCS rates 98% of the acres in mapped Kindy soils very limited, 0% somewhat limited and 0% not limited (2% not rated, such as urban land, pits or water).

Where the soil is very limited (slow permeability, a high water table, flooding, shallow bedrock or steep slopes), alternative systems such as mound or sand-filter designs are common and cost more.

Only a licensed site evaluation or perc test at the actual lot decides whether a system is allowed and which design.

Generated from the mapped numbers above using fixed rules, not a site visit. See how these notes are written.

Where Kindy soil is found

Mapped acres

Kindy is mapped in Washington.

Counties with the most mapped Kindy soil
County	Acres	Share of county land
Skagit County, WA	23,157	3.0%
Whatcom County, WA	6,717	0.6%
King County, WA	4,500	0.4%
Pierce County, WA	1,641	0.1%

Septic absorption fields

NRCS rating, share of Kindy acres

Not limited 0%

Somewhat limited 0%

Very limited 98%

Not rated 2%

Septic tank absorption field rating across mapped Kindy acres. Scale 0 to 100% of mapped land.

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Septic tank absorption field rating across mapped Kindy acres.
Category	Share of acres
Not limited	0.0%
Somewhat limited	0.0%
Very limited	98.4%
Not rated	1.6%

Drainage, water table and flooding

Share of Kindy acres

Depth to seasonal high water table: About 2.2 feet (26 in) (median where reported).
Flooding: Not mapped as flooding on most acres.
Slope: Typically 17–48% (median 48%).
Topsoil organic matter: Median 7.5%.

Drainage class

Excessively drained 0%

Somewhat excessively drained 0%

Well drained 0%

Moderately well drained 100%

Somewhat poorly drained 0%

Poorly drained 0%

Very poorly drained 0%

Drainage class across mapped Kindy acres. Scale 0 to 100% of mapped land.

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Drainage class across mapped Kindy acres.
Category	Share of acres
Excessively drained	0.0%
Somewhat excessively drained	0.0%
Well drained	0.0%
Moderately well drained	100.0%
Somewhat poorly drained	0.0%
Poorly drained	0.0%
Very poorly drained	0.0%

Hydrologic soil group

A: fast infiltration (mostly sandy or gravelly) 0%

B: moderate infiltration 0%

C: slow infiltration 98%

D: very slow infiltration (clayey, shallow or wet) 0%

A/D: D as is, A if drained 0%

B/D: D as is, B if drained 0%

C/D: D as is, C if drained 0%

Not rated 2%

Hydrologic soil group across mapped Kindy acres. Scale 0 to 100% of mapped land.

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Hydrologic soil group across mapped Kindy acres.
Category	Share of acres
A: fast infiltration (mostly sandy or gravelly)	0.0%
B: moderate infiltration	0.0%
C: slow infiltration	98.4%
D: very slow infiltration (clayey, shallow or wet)	0.0%
A/D: D as is, A if drained	0.0%
B/D: D as is, B if drained	0.0%
C/D: D as is, C if drained	0.0%
Not rated	1.6%

Sources & data dates

Source: USDA NRCS Soil Survey Geographic Database (SSURGO), queried through Soil Data Access. Public domain.
Data date: SSURGO as published on November 3, 2026 (most recent survey area update October 26, 2026). NRCS refreshes SSURGO each October.
Scope: All map unit components named Kindy (component kind "Series") in SSURGO: 36,015 acres.
Method: Shares are by mapped acres of Kindy components. The profile comes from the single largest Kindy component. Full methodology.

Independent reference site. No government affiliation or endorsement.

Full narrative description: USDA Official Soil Series Description for Kindy.