Lavon Lake Dam (Lavon Lake)

Field Descriptions

Dam Name: Lavon Lake
Other Name: LAVON LAKE
NID ID: TX00007
Longitude: -96.4833
Latitude: 33.0333
County: COLLIN
River: EAST FORK OF TRINITY RIVER
State: TX
Nearest City: ROCKWALL
Distance: 4.00 miles
Owner Name: CESWF
Owner Type: Federal
Dam Designer: CESWF
Private Dam? No
Dam Type: Earth
Core: Homogeneous Dam (Position)
Foundation: R
Purposes: Water Supply
Year Completed: 1952
Dam Length: 19493 feet
Dam Height: 81 feet
Structural Height: 81 feet
Hydraulic Height: 76 feet
Maximum Discharge: 357700 cu ft/sec
Maximum Storage: 1020500 acre-feet
Normal Storage: 456500 acre-feet
Surface Area: 21400 acres
Drainage Area: 770 square miles
Hazard Potential: High
Emergency Action Plan? Yes
Inspection Date: 2012-04-03
Inspection Frequency: 5
State Regulated Dam? No
State Regulating Agency: N
Spillway Type: Controlled
Spillway Width: 480 feet
Volume of Dam: 5990655 cubic yards
Federal Funding Agency: LAVON LAKE
Federal Design Agency: Department of Defense;
U.S. Army Corps of Engineers
Federal Construction Agency: Department of Defense;
U.S. Army Corps of Engineers
Federal Regulatory Agency: Department of Defense;
U.S. Army Corps of Engineers
Federal Inspection Agency: CE
Federal Operating Agency: Department of Defense;
U.S. Army Corps of Engineers
Federal Owner (Agency): Department of Defense;
U.S. Army Corps of Engineers
Other Federal Agencies: Department of Defense;
U.S. Army Corps of Engineers
Source Agency: Department of Defense;
U.S. Army Corps of Engineers

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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