Williamson Dam (Lake Cisco)

Field Descriptions

Dam Name: Williamson Dam
NID ID: TX01409
Longitude: -98.9833
Latitude: 32.4394
County: EASTLAND
River: SANDY CREEK
State: TX
Nearest City: ELIASVILLE
Distance: 40.00 miles
Owner Name: CITY OF CISCO
Owner Type: Local Government
Dam Designer: ELROD ENGINEERING
Private Dam? No
Dam Type: Buttress
Core: Homogeneous Dam (Position)
Earth (Type)
Known (Certainty)
Foundation: RSK
Purposes: Water Supply
Year Completed: 1923
Dam Length: 1064 feet
Dam Height: 96 feet
Structural Height: 96 feet
Hydraulic Height: 96 feet
Maximum Discharge: 25600 cu ft/sec
Maximum Storage: 32800 acre-feet
Normal Storage: 26000 acre-feet
Surface Area: 1817 acres
Drainage Area: 26 square miles
Hazard Potential: High
Emergency Action Plan? Yes
Inspection Date: 2009-10-06
Inspection Frequency: 0
State Regulated Dam? Yes
State Regulating Agency: TCEQ
Spillway Type: Uncontrolled
Spillway Width: 270 feet
Outlet Gates: S2;U2
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:




Quick Links
Lake Cisco News
Lake Cisco Photos
Lake Cisco Videos




About Us
Contact Us
Site Map
Search Site
Advertise With Us
   
Cisco.LakesOnline.com
THE LAKE CISCO WEBSITE

Copyright 2024, Lakes Online
Privacy    |    Legal