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) |
 |
| 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]
See also
References
- ↑ Thomas J. O’Brien Lock & Dam. U.S. Army Corps of Engineers. Retrieved February 26, 2018.
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