Ovall
gravelly loam

Mapping Symbols and Slope Classes: 
OvC: 0 to 15% Slopes
OvD: 15 to 25% Slopes
OvF: 40 to 75% Slopes

The Ovall series consists of well drained soils that overlie weathered bedrock at a depth of 20 to 40 inces. These soils formed in glacial deposits on uplands. Elevations range from 500 to 1000 feet. Slopes are 0 to 75%. The annual precipitation is 45 to 65 inches and the frost-free season is about 200 days.

Typical Profile:
Depth from Surface:
0 to 36 Inches: Dark brown to dark yellowish-brown gravelly loam 

36 Inches: Weathered bedrock 

Permeability: Moderate

Rooting Depth: Roots penetrate easily to bedrock

Depth to Seasonal High Water Table: No high water table within a depth of 5 feet

Available Water Holding Capacity: Moderate

Runoff Potential: Slow to very rapid depending upon slope

Erosion and Slippage Hazard: Slight to severe depending upon slope

Flooding Potential: None

Use and Management: This soil is used for timber and pasture on slopes less than 15% and is best suited for timber on steeper slopes. Pasture forage yields are 2.5 tons/acre/year with good management on the C phase. Douglas-fir, Western Hemlock, Western Red Cedar, Red Alder, and Bigleaf Maple are important tree species on all soil slope classes. This soil has moderate to severe equipment limitations and erosion hazard for site preparation and timber harvest in the slope classes steeper than 15%. The Ovall soil has severe engineering limitations due to its shallowness to bedrock. It has moderate to severe limitations for recreational uses due to the large amount of gravels and the steepness of some of the slope classes.

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