Fast-moving water can be dangerous for people, animals, and vehicles alike.
If you're driving through flood waters, you should remember that only two feet of water can sweep away most cars (even large SUVs). So, if you end up in deep, fast-moving water on foot, it's even more dangerous.
This unlucky dog found himself in a spillway full of water, unable to get back up the slippery slope that got him there.
Luckily, some passers by saw him and did what they could to help.
Not every person would stop and form a human chain to save a stray dog in need. These people are heroes!