I grew up near the Mississippi. More of a wide brown line.

Similar to what you'll find on the underwear of a cop that got spooked by a citizen with a cell phone.

Just realized that I’ve heard the word “estuary” all my life, but forgot what it meant. So I looked it up:

Estuary

1. that part of the mouth or lower course of a river in which the river's current meets the sea's tide.

2. an arm or inlet of the sea at the lower end of a river.

That and varicose veins.

While estuaries isn't wrong, I feel like they were looking for the word tributaries.

These colors ~~don't~~ do run

authority be dammed

Based