In message , Roger Hayter
writes
Title says it all. I am looking for a submersible water pump, a few
litres an hour would do, driven by propeller/turbine working off the
flow in the stream to pump water up a few feet. Or of course any
relevant components of this idea would be useful. Many thanks for your
thoughts. Water wheel, unless on a raft, is no use as water lever
varies about 5000% of minimum 100mm or so.

Sir might want to look at this old, but effective concept

http://journeytoforever.org/at_waterpump.html


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geoff