Since it's the summer months I want to talk about water safety. In my home town on Lake Michigan there have been three drownings in 10 days. It's terrible and I wish the families of these individuals well. If you live on the great lakes or anywhere with large bodies of water for that matter you need to be aware of riptides. I work on the waters of Lake Superior and have to deal with these issues often.
The Lake or Ocean is much stronger than you
Waves don't have to be big for riptides to form
River outlets are especially dangerous. Even ankle deep water will drag you out and prevent you from standing up.
Swim parallel to the beach to escape a riptide or under tow. Then swim in. Don't fight it. The average adult can only tread water for 15-20 minutes. Most of the time that's much shorter than the time it takes for a boat or chopper to reach you.
Undertow and riptides can drag you 500-1000 ft off shore. That's 3-6 Olympic size swimming pools.
If you are not a strong swimmer - STAY OUT OF THE WATER