Lock and Dam No. 17

41°11′27″N 91°03′37″W / 41.19083°N 91.06028°W / 41.19083; -91.06028Construction began1935Opening dateMay 14, 1939Operator(s) U.S. Army Corps of Engineers, Rock Island DistrictDam and spillwaysImpoundsUpper Mississippi RiverLength1,121 feet (341.7 m)ReservoirCreatesPool 17Total capacity50,000 acre⋅ft (0.062 km³)Catchment area99,600 sq mi (258,000 km²) Area86.9 acres (35.2 ha)Architectural styleModerne, Lock and DamMPSUpper Mississippi River 9-Foot Navigation Project MPSNRHP reference No.04000177^[1]Added to NRHPMarch 10, 2004

Lock and Dam No. 17 is a lock and dam located near New Boston, Illinois on the Upper Mississippi River near river mile 437. Its main lock is 110 feet (33.5 m) wide and 600 feet (182.9 m) long with its bottom at an elevation of 518 feet (157.9 m). Normal pool elevation behind the dam is 536 feet (163.4 m). The movable portion of the dam is 1,121 feet (341.7 m) long and consists of 3 roller gates and 8 tainter gates.^[2] In 2004, the facility was listed in the National Register of Historic Places as Lock and Dam No. 17 Historic District, #04000177 covering 869 acres (3.5 km²), 1 building, 3 structures and 2 objects.

• Public Works Administration dams list

Media related to Mississippi River Lock and Dam number 17 at Wikimedia Commons

• Lock and Dam No. 17 - U.S. Army Corps of Engineers
• Historic American Engineering Record (HAER) No. IL-28, "Mississippi River 9-Foot Channel Project, Lock & Dam No. 17, Upper Mississippi River, New Boston, Mercer County, IL"
• Lock 17