Old Ben/Mine 26/SLURRY Cell 3 Dam (Rend Lake)

Field Descriptions

Dam Name: Old Ben/Mine 26/SLURRY Cell 3 Dam
Other Name: MINE 26/SLURRY CELL 3
NID ID: IL50183
Longitude: -89.0083
Latitude: 38.0867
Map Section: 17;5S;2E;3
County: FRANKLIN
River: TRIB REND LAKE
State: IL
Nearest City: SESSER
Distance: 0.10000000 miles
Owner Name: LCC ILLINOIS, LLC
Owner Type: Private
Dam Designer: OLD BEN COAL CO.
Private Dam? No
Dam Type: Earth
Purposes: Other
Dam Length: 5800 feet
Dam Height: 40 feet
Maximum Discharge: 193 cu ft/sec
Maximum Storage: 1640 acre-feet
Hazard Potential: Significant
Emergency Action Plan? Yes
Inspection Date: 2012-02-08
Inspection Frequency: 3
State Regulated Dam? Yes
State Regulating Agency: IDNR
Spillway Type: Uncontrolled
Spillway Width: 12 feet
Outlet Gates: U
Federal Funding Agency: MINE 26/SLURRY CELL 3
Source Agency:

Dam Safety For Boats

A large amount of water can be released from a dam without any warning at any time and by any means. For example, when the demand for electricity is high, the turbines at a dam may be turned on automatically, resulting in a significant increase in the downstream flow of water in only a matter of seconds.

If there's a need to release water through the sluiceways (outlets at the base of the dam), this operation can also create a great swell of discharged water downstream.

During flood operations, any or all spillway gates across the width of a dam can be opened to release upstream flood water that needs to pass to the next downstream reservoir. Upstream or downstream, even the most experienced boater with the strongest motor is no match for this strong flow of water plunging over a spillway of a dam. Even if you're boating far downstream of a spilling dam, recirculating current can pull a powerful boat upstream toward plunging water that could shred any boat.

Some dams equipped with navigation locks create turbulent water as well. When vessels pass through, strong flow is released near the exhaust ports of the wing wall of the lock.

Warning Systems At Dams

To warn reservoir users of potential danger, warning devices are installed at many dams:






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