How do large river floods affect the ocean?

A big river flood can send lots of water and stuff into the ocean, just like when you dump a bunch of toys into a bathtub.

Rivers are like highways for water, carrying it from far away to the ocean. When it rains a lot or there's a heavy snow melt, rivers get full and flood, meaning they spill over their banks and go everywhere, even into the sea.

Imagine your bathtub is the ocean. Your sink is the river. When you turn on the faucet all the way (like heavy rain), water flows from the sink to the tub. If it's too much, water spills out of the tub onto the floor, that’s like a flood. The same thing happens with rivers and oceans: extra water goes into the ocean, making it rise a little bit.

Floods can also bring along mud, sand, and even little creatures, just like when you splash in the bathtub, sometimes you get soap suds or bits of your toys in the water. These things mix with the ocean water, changing how it looks and feels.

So next time you see a big flood, imagine it’s like an extra bath time for the ocean!