Tillery Dam (Lake Tillery)

Field Descriptions

Dam Name: Tillery
NID ID: NC00547
Longitude: -80.06583
Latitude: 35.20667
County: STANLY, MONTGOMERY
River: PEE DEE RIVER
State: NC
Nearest City: CHERAW
Distance: 53.00 miles
Owner Name: DUKE ENERGY CAROLINAS, LLC
Owner Type: Public Utility
Private Dam? No
Core: Homogeneous Dam (Position)
Concrete (Type)
Known (Certainty)
Foundation: RK
Purposes: Hydroelectric
Year Completed: 1928
Dam Length: 2753 feet
Dam Height: 86 feet
Structural Height: 98.5 feet
Hydraulic Height: 82 feet
Maximum Discharge: 265000 cu ft/sec
Maximum Storage: 16700 acre-feet
Normal Storage: 167000 acre-feet
Surface Area: 5260 acres
Drainage Area: 4600 square miles
Hazard Potential: High
Emergency Action Plan? Yes
Inspection Date: 2012-06-20
Inspection Frequency: 1
State Regulated Dam? No
Spillway Type: Controlled
Spillway Width: 758 feet
Outlet Gates: T18;
Federal Regulatory Agency:
Federal Inspection Agency:
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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