Texas Gardening: Here are the promised resaca pics, 1 by Calalily

Calalily wrote:
A channel in Port Isabel which is not the same thing. The channels are salt water, the resacas are fresh water. When they get contaminated with too much salt, they drain and refill them. It is a slow process and takes about a month to drain, then refill the resaca. The gates make it possible to only refresh the water in one section at a time. They also come in handy when the nutrias have damaged a wall causing it to cave in. That section can be closed off and the wall repaired without losing all the water in the system.
This is a salt water channel.