Imperial Valley press., 1911-12-28
ENGINEER H|NKLE
MAKES REPORT TO
WATER COMPANIES

Consulting Engineer +. C. Finkle has
submitted to the special dredge commit
tee of the Mutual Water Company, which
report in part deals with old subjects, but
which speaks of matters of present in
terest as follows:
| went over the irrigation works sup
plying the valley with water and the con-
dition of the intake and main canal is now
as follows: The intake of the canal at the
river is now at a point 96 feet in eleva-
ton, which is feet below the sill of Han
Ions gate. All of the channel from the
river to the gate ranges from 81 feet to
9S 5-10 feet in elevation. Below the gate
there is no place in the canal which is
'tbove the sill of the gate, or 9S. feet eleva-
ton. With u gauge of 16 40 feet at
Yuma, the canal was diverting 2063 cubic
feet Of water per second. The above con-
dition is entirely satisfactory and is due
entirely to the dredging which has been
done by the two dredges, Imperial and
Ell Centre. The dredge Imperial has COM
pletely cleaned the silt from the canal
and the dredge Ell Centre has removed the
bar at the entrance of the canal so that
there is no obstruction to the free inflow
of the water.
About three weeks ago all the remnants
of the temporary weir below the intake
We're removed and there is now no part of
I this weir in place; yet we are obtaining
nearly 2100 second feet of water which, if
no dredging had been done, would not
have been more than 800 or 400 second
feet. This completely disproves the state
ment so often promulgated by certain
parties that Il weir is necessary in or
der to divert water into the canal.
In order to make it Il matter of rec
ORD, however, | desire to call your atten-
ton to the fact that about 2000 cubic feet
per second is the maximum flow which
can be diverted from the river at low
water through Hanloh's gate as new con-
structed. 1t is my Judgment that the
sill of the gate was constructed too high
and that it should have been placed from
to feet lower than it was. Within
the next year it will be necessary to con-
struct an extension to this gate at a low
er level and l now suggest this in order
that the matter may be financed and the
construction work carried out next sum-
mer. 1t is not probable that the revenues
OF the receiver will provide for this ex-
penditure in view of the numerous other
matters which will have to be met and it
will therefore have to be financed by the
Mutual Water Companies. 1t is estimated
that the extension of the structure will
require an outlay of from $50, 900 to
100000
Protection of River Bank
The bank of the Colorado river from
the Hind Dam to House must be in
some way protected before the next
season of high water The revenues of
the receiver show no surplus available for
this purpose and the only hope lies in
having Colonel Ockerson do this work
| have addressed formal request to
Colonel Ockerson that he do so, copy of
which is hereto attached. The work nee
essary is as stated in my letter to Colonel
Ockerson, namely, the construction of a
section of levee further inland than the
levee of the California Development Com
pany at House and the construction of
jetties to protect the bank of the stream
from House l to House I. This work has
been made necessary by reason of the Jet
ties which the reclamation service has
constructed on the Arizona side. Recla-