The people's voice. [volume] (Helena, Mont.) 1939-1969, 1948-10-15

in the valley is approximately $4,000, 600, 600 kio-
watt hours per year Full consumptive Of water
for irrigation and other purposes will cut this po-
tential down to about 800 900 900 kowatt hours
per year. Difference between the Pick-Sloan plan
and full development is therefore, about 100000,
600 kilowatt hours of power annually, in favor of
the latter.
"a. A valley wide study of runoff, reservoirs,
and flood crests indicates that Pck-Sloan plan will
furnish sufficient flood protection along the Mis-
souri, river itself from Great Falls to Kansas City,
along the Yellowstone from the mouth of the Big
Horn down, also along the Platte, Kansas, Usage,
Gasconade Thompson, and Grand rivers. This will
Iaso be true of many smaller tributaries parts of
tributaries, where reservoirs to be installed 1t
will not be true of the main stream from Kansas
City down. of the Yellowstone from Gardiner to the
mouth of the Big Horn, and of dozens of small and
medium-szed tributaries throughout the valley.
There is need for a number of small flood control
reservoirs on tributaries that enter the Missouri be-
low Yankton. About 4000 900 acre feet of storage
capacity will protect these tributaries from local
flood damages and in connection with full consump-
tive above fully protect the lower valley against
all floods of the future.
35. At least 1000, 900 acre feet of storage now
being provided along the main stem, from Garrison
to Gavins Point, should be transferred to points
higher on the main stream and its tributaries for
threefod purpose; namely, additional flood protec
ton, more power generation, and additional irrga-
ton water This transfer of storage plus additional
flood control reservoirs on the tributaries below
Yankton, should furnish complete flood protection.
36. Stream sterilization, equalization of flow,
would be fairly accomplished under the Pick-Soan
storage system except for necessity of releasing
equal volumes of water to service the navigation
channel. However, accomplishment of what could
be stream sterilization is too far down the stream to
do much good. Transfer, of what is now excess
storage in the reservoirs along the main stem from
Yankton to Gavins Point should Oe to 100 possibly
many 12O small reservoirs well scattered over
the upper valley Inclusive of extra flood control
reservoirs below Yankton, the total number of
ervOirs should be increased from 128 to somewhere
between 26O and 280. Total storage necessary works
out 122, 100000 acre feet. More complete in
formation than is now available may either increase
or decrease this figure by two or three per cent
81. Yellowstone river basin, with a runoff one
third larger than the Missouri at their confluence,
has evdentally been reserved in the PickSloan plan
as the main source of water supply for the navga-
ton channel It is thanked by several million acres
of good land has a fall of 1870 feet in 500 miles
of flow from Gardiner to its mouth and has the
greatest development potential in Missouri basin.
Only ten fifteen per cent of this is being utilized
1t appears feasible to irrigate another 1900 900
acres of land and generate another 100000, 900
kowatt hours of power in Yellowstone drainage
and still leave ample water supply for maximum
development in the two Dakotas
SO. With less than maximum but sufficient, \
valley development to assure consumptive use of
II, 900 000 or 18 5000, 900, feet of water an
nually and additional flood control reservoirs on
tributaries below Yankton, the Missouri river can
be kept within it's banks at all times. There will
cease to be need for the expensive levee system
proposed and 225, 900 acres of alluva bottom land
ian be saved for productive uses.
80. Time has amply demonstrated that the Army
Engineer policy Of installing pile dikes and other
Instructions to construct channels for the purpose
If securing securing action the bottom has not
worked we'll along the Missouri. Actual effect has
often been to increase flood crests with the same
Or less volume of flow.
Organize tionaI Faults
40. Other than restoration of Devils Lake, the
oick-Soan plan makes no provision for forestry
work, soil conservation, and repenishment of failing