5 ms·
It is very common for water projects. I think it comes from reservoirs, since the area is measured in acres and the depth in feet.
by rrss 4y ago
It is very common for water projects.
I think it comes from reservoirs, since the area is measured in acres and the depth in feet.
- kragen 4y agothis particular medieval unit comes from irrigation maybe a rice crop requires three feet of water from planting to harvest, and you normally only get three inches of rain during that time, so you need 2.75 acre-feet of irrigation water per acre of rice