 On this week's Inside Look, summer is officially here and temperatures are hot across California. We'll tell you what is being done to make sure your air conditioner keeps running. Oh, it's hot. And later, rivers are flowing at a rapid pace and rising by the day. Sean Boyd traveled to the Sierras and will tell us what is being done to ensure public safety and how the Forest Service is dealing with this issue. Find out next on Inside Look. Welcome inside here in the air conditioning. Yes, inside, that's because outside temperatures are swelling near 110 degrees in northern California and it's getting even hotter in the southern part of the state. Almost a week into this heat wave, all systems are being stressed, including those at the California Independent System Operator. Cal ISO oversees the operation of the state's electric power system and the kickoff to summer is keeping everyone on alert. A flex alert is a voluntary call for conservation. And that is, we're just asking people just to let up a little bit on how much electricity they're using in their home. Due to extreme heat, Cal ISO issues statewide flex alerts earlier this week. What does it mean? Well, it's simply asking the public to conserve energy and you can do that by following these three steps. Adjust your AC to 78 degrees or higher. Use electric appliances after 9 p.m. and turn off all unneeded lights. And this heat can be especially dangerous to some. Adults over 65, infants and children, those with chronic medical conditions, the homeless and even people who work outside. So be sure to take a few extra steps. Take advantage of indoor air conditioning like a cooling center or mall where loose, lightweight clothing drink more water than usual. Check in on a friend or neighbor and keep informed with local news updates. While the electrical grids are being constantly monitored, so too are the rivers. Sean Boyd is in the Sierras where after an unusually wet winter, combined with extreme heat, snow melt is running off the mountains and causing dangerous conditions. Absolutely. Look at this raging river. When's the last time you saw the American River looking like that? Well, that's all because of all that snow that was up in the higher elevations. It's melting and now rivers around California are flowing faster and harder and colder than they ever have. And that is creating a danger for you and your family if you let your guard down. These are images taken by Southlake Tahoe Fire and Rescue after pulling the body of a woman from the upper Truckee River. She was paddle boarding when she got hung up on this fallen tree and drowned. Record snowfall in the mountains is melting and that's attracting people to rivers all over California. But conditions are much different this year. Much higher water, two to three times more water coming down the river. Paramedic Brian Pierce warns recreationalists to beware of unusual conditions and increased risk. There's more trees down from the river. There's more hidden objects. The water is moving faster so you have less response time and it's cold. Yeah, it's cold. Cold water can shock the body, cramping or stiffening muscles and making it more difficult to breathe. The U.S. Forest Service has cleaned most of the debris piles in parts of the Truckee River that flow through the National Forest. But it's what's under the water that can be dangerous. I can't tell you how many horror stories have happened out here. Steve Lenoy ran a kayak shop for 27 years in the Lake Tahoe Basin. He says tragedy can also strike when people panic under stress, like when the woman paddle boarders leash caught that tree. By the way, he advises never wear a leash when paddle boarding on a river. Good thing this young lady wasn't wearing hers. We watched her get tossed from her paddle board into the Truckee at the very same spot where the woman had drowned just days before. No life jacket either, but she escaped with her life. And of course always remember to wear your life jacket. It could mean the difference between life and death. Also, remember that the water is faster, is stronger, and it is much colder. And also right beneath the surface, a lot of debris that could cause a lot of problems for you. Here now with some potentially life-saving tips is Heather Noelle with the U.S. Forest Service. Heather? I've got tips for you. Wear your personal flotation device. Know your location and never go alone. Beware of stronger currents this year. If you're gonna drink, please drink responsibly and never recreate on the water alone. Back to you, Sean. Great tips, thanks Heather. Well that does it for this edition of Inside Look. I'm Sean Boyd for OESNews.com. For more tips on how to beat the heat, visit the Cal OES website to locate cooling centers in your neighborhood and to learn signs and symptoms of heat-related illnesses. And as always you can find more videos and stories on our blog at OESNews.com and don't forget to check us out on Facebook and like us on Twitter.