Launching boats at Lake Travis may get a little tougher this week if Mother Nature doesn't cooperate.

The last public boat ramp is in danger of being closed.

Some boaters are already calling it quits because they said it's not safe.

"The water's getting so low that our cove is dried up," boater Zach Bryer said. "We're having to pull it [the boat] out of the water. It's going to be the last time we take it out for the season most likely."

Mario Perez and his friend hit bottom and ruined the boat's propeller in their boat Saturday night.

"There was a flag -- we couldn't see it until we were right on top of it, and by the time we were on top of it, we beached our boat. So we bottomed out pretty bad."

Mansfield Dam is the only boat ramp still open on Lake Travis, and it's down to two of its four launching lanes.

As of Sunday, the Lower Colorado River Authority (LCRA) reported lake levels at 640.69 feet.

At 640 feet, ramps are out.

As boaters' feared this could be one of their last weeks to launch, swimmers said closed ramps could be a nice break.

"In one aspect, I think it would be a little more peaceful without too many boaters," swimmer Carrie Warner said.

But, Perez is determined to get his boat fixed fast and get it back on the water before levels drop any lower.

"We'll figure it out," he said. "It's not going to stop us from being on the water."

An LCRA spokesperson said a heavy rain could raise lake levels
substantially in just 24 hours.

Right now, levels continue to drop more than one foot per week.

LCRA also said evaporation is much higher this summer than past years because of the extreme heat.