Saturday night on Lake Travis, a young man fell off of a boat and hit the propeller, sending him to the hospital.
And on Sunday afternoon, emergency crews in Georgetown responded to a situation at Russell Park a little after 5.
A 4-year-old girl and a 6-year-old boy were pulled from the water there.
They were both airlifted to Dell Children's hospital with CPR still in progress.
Georgetown officials say the investigation is on-going and no word on the condition of the two children just yet.
Here in the Austin area, Austin-Travis County EMS say they haven't been as busy this weekend as they thought they'd be, thankfully.
But lake season is far from over and we asked them about the top problems they see on the lakes when it comes to boating and heat.
Special operations commander Craig Smith with Austin-Travis County EMS met us by one of their inflatable rescue boats. He says if you own a boat, make sure you take care of it throughout the year so you won't get stranded when you finally do go out in it. He says to let someone know where you'll be so EMS crews can get to you if something does go wrong. Use sunscreen and drink lots of water.
Smith says it's best to "pre-hydrate" as well.
"You need to be drinking early, if you're going to spend all day tomorrow or the next day out in the sun then you need to spend a little bit of time hydrating the day before. And that way when you go out, you're not going to stop every couple of minutes and take a drink of water, you're going to be swimming, skiing," Smith said.
As for the propeller incident, Smith says they see it often.
"If you jump off of the boat, and even if the prop isn't spinning, the motor's not on, you could still hurt yourself on the prop. It's still sharp. You could land on it, you could catch a foot on it, it's gonna cut you wide open," he said.
Smith says you can buy a prop-guard for a little extra safety.
"These are commercially available for most boats. You can also get a type of screen. It's a metal screen that you can't press in and you can step on it all day long with the motor running full speed and it wouldn't hurt you," he said.