BOARD00188

• Board Meeting Date: 11/14/1962
• Description: Minutes
• Board Meetings - Doc Type: Meeting

up with in our study, and this is somewhat in
more detail.

They do have some photographs which show
the progression of salt cedar. Salt cedar is
is our big problem. I wanted to show the
Board that progression. This results from a
comparison of aerial photographs taken in 1936
and aerial photographs of the same area taken
in 1957, so that this covers a 21-year period.
I might say that the increase in comsumptive
use, due to the spread of salt cedar in this
area, amounts to approximately 200 acre-feet
per year, in consumptive use. This is an
increase each year over this 2l-year period,
of 200 acre-feet per year. If we project
that over the entire reach of the river we
get quite a substantial figure."

1

MR. PETERSON:

"Just one question before you begin the
photographs - how much of the stretch of the
river did this involve?"

MR. KUIPER:.

"What was that, Mort, about 30 miles?"

MR. BITTINGER:.

"About 25 miles."

At this time slides were shown of the aerial photographs
and explained by Mr. Kuiper.

MR. KUIPER:

"I think the mark here identified the
pictures both as to location and so that you
can see that they are pictures taken of the
same area. This is the 1936 photograph. You
will notice the scattering of the dark vegeta-
tion in there, that is primarily cottonwood,
but there is cottonwood, salt grass and willows
in that area in 1936.

The change that has come about is quite 1
remarkable, I think, in this darkened area in
through here, here and here, in that this has
darkened in to where the salt cedar, which is
a much higher consumer of water, is encroach-
ing into this area. It's displacing the cotton-
woods and the salt grass and is using a great
deal more water than was used historically in