Grand Tower Levee Surveying

US Army Corps of Engineers, St. Louis District


Horner & Shifrin performed topographic surveying and surface modeling for PL84-99 2015 Flood Recovery – Grand Tower and Kaskaskia / Prairie Du Rocher Levee Repairs. Our team conducted on-site topographic of 35 levee slide repair areas and volume calculations utilizing Microstation surface modeling according to US Army Corps of Engineers requirements. H&S provided permanent survey monuments along levee segments. Key success of the project required our team to work closely with Corps staff, earthwork contractor, and materials testing staff to perform on-site topographic and volume calculation surveys while coordinating our efforts with the on-site earthwork contractor, rain and flooding events, and additional task order requests simultaneously to meet Corps objectives and deadlines.


Project Scope


Project Components




Grand Tower, Illinois

Year Completed


Innovation. Agility.
Reliability. Horner & Shifrin.