Step 49: Leaf and Sand Free Floating Water Intake for Micro-Hydro plant or Water Pump
Solution: Leaves tend to float on top the water and sand sinks. Position the water intake in the middle.
Problem: The water level changes.
Solution: Tie the water intake to a float that keeps it just below the surface of the water.
I saw this gadget while paddling in the Mississippi river near Brainerd Minnesota.
The owner pumps river water to water his yard and garden.
The intake pipe has a lot of little slots cut in it to admit water but exclude things that would clog or damage the pump.
The float is white plastic pipe cemented together with caps on the ends.
At the upstream end of the intake pipe is a chunk of black plastic polyethylene flexible pipe going up to the electric waterpump, positioned above the fifteen-year flood level.