Horizontal saturated conductivity1 and specific yield2 of geologic materials. Sources:Duffield; Morris and Johnson
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Gravel3×10-4 to 3×10-23×10-30.21-0.280.24
Material Range Ksat (m/s)3 Typical Ksat (m/s) Range specific yield Typical specific yield

1vertical saturated conductivity is considered to be one-tenth the value of horizontal saturated conductivity.
Superscript textSpecific yield is expressed here as a fraction. It is often reported as a percentage in the literature.
31 meter = 3.28 feet