by Joel Salatin, Plain Values
Last month I introduced two unorthodox concepts regarding water. The first is the difference between surface runoff and the inventory of the commons (like streams, springs, and aquifers). The second is the notion that we as caretakers can greatly enhance the commons by storing surface runoff rather than pumping from the commons.
We established that one-third of all rainfall globally becomes surface runoff, which means that even a one-acre watershed in a 30-inch rainfall area will generate 10 acre-inches of surface runoff per year, or 300,000 gallons. Another surface we generally don’t think about is our impervious shelter surfaces called roofs.