Rainwater harvesting is the gathering, or accumulating and storing, of rainwater for small irrigation and a way to increase ground water levels. The benefits of implementing the rainwater harvesting system is that it reduces water supply, and reduces run-off, erosion, and contamination of surface water.The best thing about rainwater is that it is free from pollutants as well as salts, minerals, and other natural and man-made contaminants. In areas where there is excess rainfall, the surplus rainwater can be used recharge ground water through artificial recharge techniques. The water can essentially be used for fire defense, landscaping, wildlife and livestock, used in residential homes. According to the Texas A&M AgriLife Extension service, rain water is calculated by:
-Catchment area (ft2)
-Collection efficiency (%)
-Initial tank volume (gal)
-Tank size (gal)
-Plant water use coeff.
-Irrigated area (ft2)
-Monthly indoor demand (gal)
-Average monthly rainfall (in.)
-Average PET (in.)
-AC condensate (gal)
To calculate rain water collection, here is a link to the Texas A&M AgriLife Extension service calculator: http://rainwaterharvesting.tamu.edu/files/2011/08/AgriLife-Ext-RWH-Calculator.xlsx
No comments:
Post a Comment