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 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…
No-till planting corn into corn in Delaware County, Iowa. By using no-till planting methods, a layer of soil conserving crop residue is left on the surface. A good no-till system will reduce soil losses by 80-90% compared to conventional planting…
