Do not forget about evaporation! On a low humidity, hot day with a slight breeze, you can lose an inch of water, or 27,514 gallons a day. If your home well is typical, it puts out about 10 gallons a minute at max flow....that is an output of only 14,400 gallons a day....not enough to keep up with evaporation....This is also assuming your well water source never runs dry or is slow on recharging.
Perhaps your canal can be dredged out to allow a deep spot for storing extra water too...?
