Iowa Heritage Digital Collections
State Library of Iowa

Browse Items (12 total)

Sectional Map of the State of Iowa
Grassed waterway on the Bumann farm.
Drop inlet (riser) on the Bumann farm.
Erosion damage, and waterway needs in a field.
Hoffman & Broghammer Group's concrete drop spillway structure in Delaware County, Iowa; 3 miles north of Manchester, Iowa.
Hoffman & Broghammer Group's concrete drop spillway structure in Delaware County, Iowa; 3 miles north of Manchester, Iowa.
Construction of a waterway turn-strip.
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