BOARD00100

• Board Meeting Date: 5/11/1960
• Description: Minutes
• Board Meetings - Doc Type: Meeting

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releasing the inflow when necessary, be-
cause when the reservoir gets down to this
point where there is no conservation stor-
age in it, it will of course be necessary
to bypass the stream flows for rights below
the reservoir.

So first you have your gauge height
which, in effect, is this thing you see
right here, graduated, not in numbers accord-
ing to this, but in feet, so that from the
capacity table we can determine this figure
over here, this amount in storage. Secondly I
there are automatic gauging stations at the
inflow points, coming into the reservoir so
that we know with reasonable accuracy how
much water is coming into the reservoir.
So again we can bypass that amount of water.
Thirdly, we have evaporation pans in the
vicinity of John Martin so that we can de-
termine the evaporation on any given day.
Ey correlating the inflow, the gauge heights
and evaporation, we can determine accurately
the amount of water entering John Martin
and the necessary bypass to make. We can
operate John Martin on a much closer basis
than most reservoirs in the state because
most of them, for instance, do not have
evaporation pans in the vicinity. Some of
them do not have. inflow gauge stations (all
of them under law are supposed to have the
gauge heights at the face of the dam).

I

There has been some talk about a method
of operation. Well, that's how it would
operate. You measure the inflow, you measure
the gauge heights. Between the two alone
you should be able to determine how much to
bypass out of the reservoir; but thirdly, to
correct any potential errors, we have the
evaporation pans so that we can determine
the amount of water that went up into the
atmosphere at any given time. Therefore
you can operate this reservoir accurately
and without any injury whatsoever to the
conservation pool.

I

Remember this - the 10,000 foot pool is
always, in effect, on top of the conserva~
tion pool; never takes one drop of water
from the conservation pool nor ever usurps