The Siren Board

Finally made it out to the Lake Lewisville floodgate to the Elm Fork Trinity River in Lewisville, TX to do some fishing and to see if there might be a siren in use. It turns out there's a Model 2 mounted 10 or so feet off the ground.







Due to recent storms, the floodgates were being opened up periodically to release water from the lake to the river. Interestingly enough, an air horn was used to signal the opening of the floodgates instead of the siren.

Here's some video of the water being released from the lake, it was pretty cool to see in person.

https://youtu.be/PYqwz1HmLqw

Nice pictures! I have been meaning to get out there to look and see if they had a 5 like Ray Roberts, or something else, which it looks like they do. I am half tempted to go up to Ray Roberts to see if they are setting off that ground-mounted 5. I haven't seen any sirens near the Lavon Dam, but I haven't actually gone out there to look. We live very very close to the spillway. My neighborhood actually backs up to the overflow floodplain, so tonight or tomorrow might be interesting if water actually starts running over the emergency last-chance-omg spillway wall.

Thanks! I had suspected there would be a siren here as well after seeing your pictures of the Ray Roberts siren and the one on the Grapevine Dam. I had been trying to find an excuse to come out to the Lewisville Dam for awhile (even though it's less than three miles from where I live) mostly because they charge for access.

Doesn't Lewisville itself have a 4004 system? I recall on Bill Wilcox's website the pictures of them replacing Thunderbolts

Lewisville has Vortexes with a few 2810s at parks for voice capability.

Assuming this dam has tainter gates? Live near one on the Huron River that has air horns, but no sirens. I'm not sure what exactly the air horns are for, because I've heard them sounding when the gate positions did not change.

ironlichen wrote:Assuming this dam has tainter gates? Live near one on the Huron River that has air horns, but no sirens. I'm not sure what exactly the air horns are for, because I've heard them sounding when the gate positions did not change.

Some of the dams here do, while others don't. If I recall correctly the flood gate at Lewisville is just a single tube where water occasionally shoots out. And by occasionally I mean I think the last time they used it was like 2006 or 2007.



The actual spillway is further to the east and I think that it has maybe run over the top maybe twice in my life.