Soil Drainage Research UnitNorman R. Fausey, Research Leader

590 Woody Hayes DriveColumbus, OH 43210

614-292-9806fausey.1@osu.edu

Drained Land Hydrology

Drained Land Hydrology

SEASONAL DRAINAGE FLOWS (March-September)

OARDC, North Central Branch, Castalia, OH1962 – 1980 (19 years)

Average rainfall ~ 24 inchesToledo and Fulton silty clay soils

Surface drainage 3.98 inchesSubsurface drainage 5.18 inchesSurface and subsurface drainage 5.92 inches

SEASONAL SUBSURFACE DRAINAGE FLOWS (March-September)

OARDC, North Central Branch, Castalia, OH1975 – 1980 (6 years)

Average rainfall ~ 23 inches

Toledo and Fulton silty clay soils

Drains 3 ft deep at 40 ft spacing 3.80 inches

Drains 1.3 ft deep at 20 ft spacing 4.98 inches

SEASONAL SUBSURFACE DRAINAGE FLOWS (March-September)

Tiffin State Hospital Farm, Tiffin, OH1951 – 1966 (16 years)

Average rainfall ~ 20 inchesHaskins, Hoytville, Mermill, Nappanee, and Rawson soils

30 foot drain spacing 2.06 inches60 foot drain spacing 1.32 inches30 ÷ 60 ratio 1.56

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