Willow Springs Dam (Willow Springs Lake)

Field Descriptions

Dam Name: Willow Springs
NID ID: AZ00088
Longitude: -110.87639
Latitude: 34.31667
Map Section: S29,T11N,R14E
County: COCONINO
River: WILLOW SPRINGS
State: AZ
Nearest City: WINSLOW
Distance: 60.00 miles
Owner Name: ARIZONA GAME & FISH DEPARTMENT
Owner Type: State
Private Dam? Yes
Dam Type: Rockfill
Core: Earth (Type)
Foundation: RS
Purposes: Recreation
Year Completed: 1970
Dam Length: 700 feet
Dam Height: 80 feet
Hydraulic Height: 80 feet
Maximum Discharge: 3055 cu ft/sec
Maximum Storage: 4230 acre-feet
Normal Storage: 3654 acre-feet
Surface Area: 150 acres
Drainage Area: 3.89 square miles
Hazard Potential: Low
Emergency Action Plan? Not Required By Submitting Agency
Inspection Date: 2012-05-17
Inspection Frequency: 5
State Regulated Dam? Yes
State Regulating Agency: Arizona Department of Water Resources
Spillway Type: Uncontrolled
Spillway Width: 46 feet
Volume of Dam: 148300 cubic yards
Federal Inspection Agency: U.S. Department of Agriculture;
Forest Service
Federal Operating Agency: U.S. Department of Agriculture;
Forest Service
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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