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Willard Robinson drop spillway structure.
Willard Robinson drop spillway structure in Delaware County, Iowa.
Watershed with a Drainage Spillway in a Pond.
Watershed with a drainage spillway in a pond in Warren County, Iowa.
Warren Langwith drop spillway construction, 1958
B&W images of drop spillway construction on Warren Langwith farm. (3)
W. Carter standing on Langwith farm drop spillway, 1958
B&W image of W. Carter standing on Warren Langwith farm drop spillway built in 1958.
Vince Nemmers drop spillway structure, 1963
B&W photograph of drop spillway on Vince Nemmers land.
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…
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…
Drop spillway, adjustable forms on the Brown farm.
Drop spillway, adjustable forms on Hugh Brown's farm in Jefferson County, Iowa.
Drop spillway weir notch on the farm.
Drop spillway weir notch on the farm in Cherokee County, Iowa.
Drop spillway on pasture land
B&W photograph of a drop spillway on unidentified pasture land.