The Fallon standard. (Fallon, Nev.) 1920-1958, 1921-09-14
Irrigation District
Board Meeting
Report Submitted On Elimination
OF Diagonal Drain-Consider-
able Discussion

/ RCO
OH.
There was considerable discussion
over the report of the committee ap-
pointed Oh the question OF the pro-
posed alternative plan to eliminate
tne diagonal drain. Following is the
majority report.
board OF directors, Truckee- Carson
irrigation District.
gentlemen
Your committee to whom was re-
Ierred the investigation OF the pro-
posea alternative pan Tor dlFerLlng
new RIVER Drain ana drains souln
oI New RIVER into me Carson Lake
basin beg to submit the following re-
port: The committee held a meeting
aug. and discussed the scope OF
the investigation. air. Williamson
was delegated to prepare definite
plans anu estimates IN cooperation
with MIR Walker. Mr. Williamson
spent the next four days in the pre-
/ paratlon OF the plans and estimates,
Mr. Walker assisting ii furnishing
data and making estimates. The re-
suits are summarized in the sketch
map submitted herewith, designated
Sketch Map No. /, showing prelim-
mary plan for alternative drainage
outlets. These results are of a pre-
liminary nature only and were pre-
pared from maps, records and data
made available by the Reclamation
Service.
The basis of estimates was the
same as used in the preparation of
estimates for the other drains, with
the exceptions that earthwork was
figured at 10c per yard for leyees and
shallow bitches, instead of 12c and
survey on leyees at $50 per mile in
stead of 500 as on bitches.
The controlling conditions to de-
termine feasibility were: Ability to
get free discharge from the lower
ends of the deep drains, and suffi-
eient area to spread the total dis
charge over so that it can all be TAX
en- care of by evaporation. The fig
ures indicate that both conditions
have been fully met and that the plan
is feasible.
"A brief description of the plan
may here be made. Starting at a
point near the intersections OF the
LC,' South Fork and Diagonal,
the Main Discharge Ditch runs due
south about two miles, thence easter
ly about two miles to Carson Lake,
width 20 IT. base, slope #. per mile,
dept of cut averaging about IT.
Also starting at the quarter section
corner between Sections II and 13,
T. 1929, the New River Diversion
Ditch runs southerly 5S miles, width
8 IT. base, slope 1t IT. per mile,
depth of cut averaging about #.
Both bitches discharge at the same
level into a pond of 5000 acres, des-
ignated Upper Terrace, extending
along the east and south sides of the
lake bed This pond or reservoir is
formed by building a levee along a
contour about half way between ele-
yations 1910 and 3911 and is about
a of a mile wide and 21s feet in
depth at the lower side when full,
with a water surface elevation of
| 1913. Below this, similar pond of
! 5000 acres, designated Second Ter
race is formed by another parallel
! ieYee. On the northwest side of the
lake bed a similar reservoir of 1900
acres, designated West Terrace is
formed by a leyee extending well
down toward the lower part of the
lake bed. This is to receive the dis
charge from the marginal lands
through the L cutoff and Carson
Lake drains. There would still re-
main the lower portion of the lake
bed or 4500 acres surrounded by
these terrace reservoirs and available
for additional evaporation surface
whenever needed. BY filling the up
per levels first and dropping to the
lower, the entire area of IA, 400 acres
is available for evaporation surface at
any time of the year.
"The estimates show a saving of
$4,000 as compared with the Di-
agonal' drain. The saving on the
lower end Of the New River drain is
assumed to be balanced by new con-
struction on Id Extension drain.
THE maximum discharge of 49,
600 acre feet is taken at one acre
foot per acre of irrigable land. No
large increase of area of irrigable
land is possible except to the west Of
the Sheckler district and any drain
age from this can easily be evaporat-
ed on a large flat in T. 1927.
besides the saving in construction
cost the following advantages are in
dicated for the alternative plan.
Sleeper slopes of discharge channels
mean greater velocity, freer discharge
and less maintenance work to keep
channels clear. Shallower depth of
discharge channels mean less dam
age by caying and accidents such as
washouts of crossings or waste
boxes.
THE foregoing portion of this re-
port. including the accompanying
map. has been prepared by Mr.. Will
hanson. II is concurred in as sub
stantially correct by the undersigned
members of the committee.
Your committee concludes that
the alternative plan is feasible and
better than the original plan and that
large saving in cost of construction
and a considerable saving in main
tenanee can be effected by changing
to the alternative plan.
your committee, therefore, rec
ommends that the project manager
be requested to defer construction of