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Lesson Plans


A&E -- To all who are working on water projects

[ Thread ][ Subject ][ Author ][ Date ]
kate/Ron Hirschi (gresham.10)
Sun, 7 Dec 1997 19:31:01 -0500

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I just came back from the Dungeness River and learned how to make a GREAT
tool for watching fish underwater!!!!! Exciting to me since I think lots of
people disregard water quality simply because we don't spend much time
beneath the surface.

Anyway, the guys at the Hurd Creek Hatchery in Sequim, Washington came up
with this waterworld viewer. Necessity pushed its invention - they needed
something to use for watching chinook salmon without spooking them. Chinook
are very rare. Disappearing. Soon to be on the endangered list.

So, they took some PVC pipe, 6 inches in diameter and glued a piece of
round glass cut to fit, into the end. On the other end, they put little
handles (like for a periscope). You place the glass end in the water,
holding the handles, then view through the hollow end.

The most effective length depends on lots of things, but theirs is about 3
feet long. Actually, they routed the inner edge of the PVC to glue in the
glass more snugly. Plexiglass would also work.

Ron Hirschi

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