Is the dam close to the area you'll be at Dan?
Here's information I found.
7. Smithville Marina Fireworks Display
Smithville Marina holds it's annual festivites with a huge display shot off the Smithville dam. View at the marina, by boat, or at the Smith's Fork Park.
â€˘Where: Smithville Lake, Smithville, MO. Smith Fork Park is located at 1601 DD Highway.
â€˘When: Dusk, July 4th.