T.J. O'Brien Lock and Dam
| T. J. OBrien Lock and Dam | |
|---|---|
 | |
| Location | Hegewisch, Chicago |
| Opening date | 1960 |
| Construction cost | $6,954,700 |
| Operator(s) |  United States Army Corps of Engineers Rock Island District |
| Dam and spillways | |
| Type of dam | 4 slide gate sections |
| Impounds | Calumet River to Lake Michigan harbor |
| Length | 297 feet (91 m) |
| Reservoir | |
| Normal elevation | 577 feet (176 m) above sea level |
Thomas J. O'Brien Lock & Dam is a lock on the Calumet River on the south side of Chicago. (The Calumet River is a tributary to the Chicago Sanitary and Ship Canal, which flows into the Des Plaines River, the Illinois River and then the Mississippi.) The dam is 326 river miles (525 km) from the Mississippi-Illinois confluence. The up-river side of the dam is at Lake Michigan's level, 577 feet (176 m) above sea level. The lock dimensions are 1,000 by 110 feet (305 m × 34 m).[1] The Lock & Dam is named for Thomas J. O’Brien, who was a U.S. Representative for the 6th District of Illinois from 1933 to 1938 and again from 1943 to 1964.
See also[]
- Illinois Waterway Lock and dams
- Chicago Harbor Lock, located on the Chicago River
References[]
- ^ Thomas J. O’Brien Lock & Dam. U.S. Army Corps of Engineers. Retrieved July 12, 2020.
External links[]
Media related to T.J. O'Brien Lock and Dam at Wikimedia Commons
Categories:
- Illinois waterways
- Dams completed in 1960
- 1960 establishments in Illinois
- Dams in Illinois
- Locks of Illinois