I copied this from an article and I think is good to share:
"In the wake of recent incidents (some tragic) in our rivers, it is right and appropriate to provide some pointers to our visitors to avoid unfortunate accidents. Since we were kids, all visits to rivers, streams or any body of moving water in the mountains came with warnings to watch for the "golpe de agua". The golpe de agua is nothing more than the body of water running out of its banks. It is usually rather sudden. Even if its not raining where you are, if the body of water runs thru several municipios, be aware that if it rains over there (one or two municipios uphill away), the water is going to come where you are at. If the sparkling clean water you are swimming in becomes turbid, or leaves and debris start showing up, it might be that a golpe is coming, and it is best you move away to make sure. The water coming down is tsunami strength and will sweep anything in its path away. Be safe."
If you and your family are planning to visit some of our rivers any time soon please keep this information in mind.