Puget
silty clay loam

Mapping Symbols: Pu

The Puget series consists of poorly drained soils that formed in alluvium in small depressions of the river valleys under sedges and grasses at elevations ranging from 10 to 650 feet. Slopes are 0 to 1%. The annual precipitation is 35 to 55 inches. The frost-free season is about 190 days.

Typical Profile:
Depth from Surface:
0 to 60 Inches: dominantly mottled dark grayish-brown and 
grayish-brown silty clay loam 

Permeability: Slow

Rooting Depth: If drained, roots penetrate with difficulty to 60 inches 

Depth to Seasonal High Water Table: 0 to 1 foot

Available Water Holding Capacity: High

Runoff Potential: Slow to ponded

Erosion and Slippage Hazard: Slight

Flooding Potential: Severe

Use and Management: This soil is used for pasture and row crops. Pasture forage yields are 2.5 tons/acre/year if undrained and 5.0 tons/acre/year if drained with good management. Douglas-fir, Western Hemlock, Western Red Cedar, Red Alder, Willow, and Sitka Spruce are important tree species. This soil has severe limitations for seedling mortality, plant competition, equipment limitations, and windthrow limitations because of its poor drainage and flooding potential. The Puget soil has severe recreational and engineering limitations due to its flooding potential, high seasonal water table, and shrink-swell potential.

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