Lock and Dam No. 19
Lock and Dam No. 19 is a lock and dam located on the Upper Mississippi River near Keokuk, Iowa. In 1978, the Keokuk Lock and Dam was listed in the National Register of Historic Places, #78001234. In 2004, the facility was listed in the National Register of Historic Places as Lock and Dam No. 19 Historic District, #04000179 covering 1,605 acres (650 ha), 7 buildings, 12 structures, 1 object. The lock is owned and operated by the U.S. Army Corps of Engineers. The dam is owned and operated by Ameren Missouri.
| Lock and Dam No. 19 | |
|---|---|
Mississippi River Lock and Dam number 19 | |
| Location | Hamilton, Illinois / Keokuk, Iowa |
| Coordinates | 40°23′45.46″N 91°22′26.71″W |
| Construction began | 1910 |
| Opening date | 1913 |
| Operator(s) | U.S. Army Corps of Engineers, Rock Island District |
| Dam and spillways | |
| Impounds | Upper Mississippi River |
| Length | 4,620 feet (1,408 m) (movable portion) |
| Reservoir | |
| Creates | Pool 19 / Lake Cooper |
| Total capacity | 292,000 acre⋅ft (0.360 km3) |
| Catchment area | 119,000 sq mi (310,000 km2) |
Lock and Dam No. 19 Historic District | |
| Location | 525 N. Water St., Keokuk, Iowa |
| Area | 160.5 acres (65.0 ha) |
| Built | 1870 |
| Architect | Meigs, Montgomery; Cooper, Hugh L. |
| MPS | Upper Mississippi River 9-Foot Navigation Project MPS |
| NRHP reference No. | 04000179 |
| Added to NRHP | March 10, 2004 |
The lock and dam obliterated the Des Moines Rapids which had effectively been the northern barrier for traffic on the Mississippi until efforts began in 1837 to address the Mississippi's 2 ft 6 in (76 cm) depth in the rapids.
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