Iowa Heritage Digital Collections
State Library of Iowa

Browse Items (26 total)

Drop spillway
Annual Report, 1964
Annual Report, 1961
Drop spillway weir notch on the farm.
Drop Inlet Drainage Site.
Watershed with a Drainage Spillway in a Pond.
Adjustable Forms for the Drop Spillway on Hugh Brown's Farm.
Drop Inlet on Edwin Ohenemus' Farm.
Drop spillway, adjustable forms on the Brown farm.
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