Iowa Heritage Digital Collections
State Library of Iowa

Browse Items (26 total)

Drop spillway installation demonstration at the Zearing Field Day events.

Drop spillway installation demonstration at the Zearing Field Day events.

Drop spillway installation demonstration at the Zearing Field Day events.

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Bob Sack aluminum drop spillway structure.

Bob Sack aluminum drop spillway structure.

Bob Sack aluminum drop spillway structure in Delaware County, Iowa.

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Willard Robinson drop spillway structure.

Willard Robinson drop spillway structure.

Willard Robinson drop spillway structure in Delaware County, Iowa.

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Don Recker spill drop way concrete structure in Delaware County, Iowa.

Don Recker spill drop way concrete structure in Delaware County, Iowa.

Don Recker spill drop way concrete structure in Delaware County, Iowa.

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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.

Hoffman/Broghammer concrete drop spillway structure in Delaware County, Iowa. Built in 1959, the reinforced drop spillway structure of "Island Type" serves as the tile outlet for 8" and 12" tiles and as a waterway stabilizer. The waterway was started…

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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.

Hoffman/Broghammer concrete drop spillway structure in Delaware County, Iowa. Built in 1959, the reinforced drop spillway structure of "Island Type" serves as the tile outlet for 8" and 12" tiles and as a waterway stabilizer. The waterway was…

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