Rainwater harvesting is an alternative water supply that can be used by anyone. Rainwater harvesting captures, diverts, and stores rainwater for later use.
Implementing rainwater harvesting is beneficial because it reduces demand on existing water supply, reduces run-off, erosion, and contamination of surface water.
Rainwater can be used for nearly any purpose that requires water. These include landscape use, storm water control, wildlife and livestock watering and household use.
A rainwater harvesting system can range in size and complexity. All systems have basic components, which include a catchment surface, conveyance system, storage, distribution, and treatment.
In East Texas your roof can provide 4,000-7,000 gallons of water per month!
RAINWATER HARVESTING MANUAL
RAINWATER HARVESTING, Texas A&M Agrilife Extension
TWDB RAINWATER HARVESTING
TEXAS RAINWATER CATCHMENT ASSOCIATION