Weird dream is bothering me. What does it mean?

More often than not I'm a lucid dreamer so dreams where I don't have control tend to stick out to me.

I took a nap earlier today and dreamt I was in an unusual mixture of a coastal town and an industrial setting.

A large multi segmented dam held up a large section of water that houses some sort of military ship.

The guide leading a tour of the area was some local hero who previously dove into the dam to save a child and mentioned, at the time, the water was doing a similar low dip towards the dam that indicated a pressure based release of water into the lower secondary dam. That a recent heavy snow fall had overfilled the dam and even he was worried about the strain it was causing.

Hearing that, I wanted to get out of dodge asap, since I cannot swim and a breach would likely be fatal for everyone around.

Despite the fear I managed to leave the area and get to a parking garage where my car was to get as far away as possible.

While driving away I got a phone call accusing me of being a coward. That everything is fine and I was ruining the group experience. To press the return button on my phone and come back.

For some reason doing so teleported me back to the walkway in front of the dam that was groaning even louder now. My dream self broke down into accusatory panic to the caller saying how I was safe before and now I had to be brave all over again to leave and get back to the car that's now preventing others from leaving too.

At this point I woke up. It's been a few hours and it's still on my mind. I'm not really sure if it's just a random nightmare or if it means anything.

A lot of my nightmares tend to revolve around water and military boats for some reason.