All my irrigation is from harvested rainwater collected from impermeable surfaces, stored in large tanks at the bottom of the hill and then pumped to 2 tanks at the top of the hill for gravity feeding to the orchard and crops. Today I added my 9th valve to the pipe system for the 2 gravity feed tanks. Are 9 valves used and are they necessary? I have concluded – yes.
Here is a ‘photo of the 2 tanks:
And here is a schematic of the pipe system:
You can see the 9 numbered valves. Here are some combinations:
Pumping to tank A – 3C, 4O, 9C (i.e. valve 2 closed, valve 4 open and valve 9 closed)
Pumping to tank B – 3C, 4O, 9O
Harvesting deck roof water – 7O, 6C, 8C (when A is full, water moves via 2 routes)
Water to tree nursery – 7O, 6O, 5O, 3C, 1C, 2C
Gravity feed to downhill from B – 😯
Gravity feed to downhill from A – 7O, 6O, 5C, 3C, 1C, 2O
Gravity feed to tophill – 7O, 6O, 5C, 3C, 2C, 1O
Pump feed to tophill – 4C, 3O, 5C, 6C, 2C, 1O
One of my best innovations is the last combination. I previously gravity fed my blueberries at tophill with an in situ bubbler system but, because pressure was slight, the distribution was uneven and unreliable. Now, with the last combination I can switch on the storage tank pump timer at the bottomhill and directly pump and distribute water via a hand held hose to the tophill plantings, which means thorough quick daily watering with daily inspection.
So now, in addition to my daily soduku exercises, I also challenge my mind with correctly setting the various valve combinations for the changing tasks.