As long as the overflow can return to the other side of the wall you
can go as high as the max. head on your pump. The problem being when
you turn off the pump all ponds will seek the same level and the water
will go through the sand bag wall and overflow the lower pond. (there
is a bright side, the sandbags will filter out the clay) ;-}

http://community.webshots.com/user/hankpage1

"BenignVanilla" wrote in message
...
Some of you remember my VF fiasco, and that much of the liner is
showing due
to my error in judgment on the grade of the land that the VF is
built in. I
am contemplating a solution to hide this liner, and need some
assistance.

Currently my pump sits in my VF and pumps TO my pond. Water then
gravity
feeds via a bottom drain back TO the VF. The liner is mostly visible
on the
far end (away from gravity feed) of the VF. I am contemplating,
building a
wall using sandbags in the VF. I then will put the pump into the end
with
the feed, and pump UP to the new "pond" created by the wall. I then
plan to
let the water run back through the current send pipe back to the
main pond,
via gravity. I think I may need a valve here to control the flow.

My theory here is that I can pump the water up faster then I let it
drain
into the pond, thereby raising the level of the water. I figure I
can put
some nice big rocks over the sandbags and let the overflow pour back
into
the lower VF, adding some interest and hiding the sandbag wall.

Any thoughts?

--
BenignVanilla
Pond Site: www.darofamily.com/jeff/links/mypond