T.J. O'Brien Lock and Dam (Chicago, Illinois)
USA /
Illinois /
Burnham /
Chicago, Illinois
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/ Burnham
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The O'Brien lock and dam is the uppermost barrier on the Illinois Waterway and the closest to Lake Michigan. Its main purpose is to control flow of lake waters into the waterway, rather than to raise or lower vessels (the elevation difference across the lock is minimal).
Wikipedia article: http://en.wikipedia.org/wiki/Illinois_Waterway
Nearby cities:
Coordinates: 41°39'6"N 87°34'1"W
- South Pool 56 km
- Sturgis Dam and Race 171 km
- Edenville Dam 354 km
- Seneca Pumped Storage Generating Station 710 km
- High Falls 712 km
- Upper-Notch dam (West-Montreal river) 848 km
- Mattawapika dam (Lady-Evelyn river) 882 km
- Lower-Sturgeon dam (Mattagami river) 929 km
- Wanatango-Falls Dam (Frederick-House river) 946 km
- Iroquois-Falls dam (generating station) 957 km
- Hegewisch Marsh 0.4 km
- Park No. 576 0.4 km
- Whitford Pond 0.6 km
- Sunset Bay Marina 0.7 km
- CID Landfill 0.7 km
- Flatfoot Lake 1.4 km
- Beaubien Woods Forest Preserve 1.8 km
- Hegewisch 2.1 km
- Riverdale 3.1 km
- Calumet River 3.6 km
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