title: Lock and Dam No. 10
text: # Lock and Dam No. 10
  
  Lock and Dam No. 10 is a lock and dam located in Guttenberg, Iowa on the Upper Mississippi River around river mile 615.0. It was constructed and placed in operation November 1937. The site underwent major rehabilitation 1989—2006. The dam consists of a concrete dam 763 feet (232.6 m) long with four roller gates and eight tainter gates. The earth embankment is 4,223 feet (1,287.2 m) long with a concrete spillway 1,200 feet (365.8 m) long. The lock is 110 feet (33.5 m) wide by 600 feet (182.9 m) long. The lock and dam are owned and operated by the St. Paul District of the United States Army Corps of Engineers-Mississippi Valley Division.
  
  The Friends of Pool 10 is a volunteer organization dedicated to the cleanup of the sloughs, backwaters and islands of the pool. Its first annual cleanup was in April 2007.
  
  * Public Works Administration Project, Army Corps of Engineers, Dam.
  