Coeur d'Alene evening press. (Coeur d'Alene, Idaho) 1907-1929, 1910-04-01
STIPULATED OUT OF COURT


known food. viz. that Of 1884 when
the water was at elevation 2129.6 was
$4,000 cnbic feet per second. For
the next highest food, viz. that OF
1904 with water surface at elevation
1880 the discharge capacity was
26.sOO cubic feet per second.
The Present Works.
The present works are as follows:
North Channel. Seven 21-foot rec
tanguIar openings, one 12-fOot rec
tangular opening, and two 63-fOot
rectangular openings. all having
crest elevation at 21l6.5 (same 40
old dam).
South Channel. Six rectangular
oritices, each feet wide and Is feet
high, with their bottoms at elevation
21Os.6.
Middle Channel. Five penstocks
through powerhouse (the sixth being
instaIledl each IL 3" in diameter
and centers at elevation 21O8.I.
The combined discharge capacity
of the present works for the food
height of 1894 is $4,000 cubic feet
per second. For the food height OF
1904 the discharge capacity is 3s.-
600 cubic feet per second.
Thus for the highest known food
the discharge capacity Of the present
works Is 10 per cent greater than
that OF the old and for the next
highest food It is ~ per cent great
er. Hence we conclude the food
heights are not increased by the pres
ent works over what obtained by
the old works IL the fainter gates are
wide open and the Bear Trap dams
are down.
AS a matter OF fact, the discharge
out Of the lake in food time IL gov
erned by the capacity Of the narrow
est section at the outlet OF the lake.
From soundings taken by myself at
the minimum section, December 20.
AOVVf uHu TIC AuCah ClCNatAOu Vi inc
stream bed at outlet to be 2I1s.7.
The lowest point in this cross sec
tion is at elevation 2117.7. tFTOm
soundings furnished me by the com
pany the corresponding elevations are
2118.6 and 2117.1 respectively.
2. Feasible power sites between
Post Falls and Spokane. The total
fall between the tail race of the Post
Falls plant and the water surface
above the falls at Spokane is normal
ly' 1913 feet or "A feet per mile.
Streams with no greater slope than
this are not considered power streams
unless they carry an unusually large
volume of water. 1t therefore means
that whatever head is to be utilized
will have to be created by a dam.
There are two points where dams
could be constructed: "a at a point
about two miles below Post Falls.
A dam here would raise the water
well into the power house Of the
Post Falls plant and consequently
mean the abandonment OF that plant
CD Near Pineeroft about ave miles
above Spokane. Here q dam Is fee,
in height could probably be built
without serious damage to agricul-
tural lands above. This would de.
velop at average low water In Spo-
kane river about 2.4OO horse power
The cost of such a plant would b.
nearly as great as the present Pos
Falls plant which has a capacity Of
about 5000 horse power. Hence
the cost per horse power would b
so inordinately high that Il would
not under present conditions be com
mercially profitable. 1t would be far
cheaper to use steam.
3. The irrigation canal can b
supplied with $40 cubic feet Of watel
per second with the water in the fore
bay at the crest of the dam. This Il
far in excess of the capacity OF tn
canal, hence it Is not necessary to ar
tihcially raise the water At the dan
to supply the irrigation canal.
4. / have compared the traeini
prepared by the company showing
lands enclosed by the 212S-foot con
tour bordering st. Joe river in COeu
dAlene Indian reservation with tn
original notes in possession Of tn
company. I ind that the maps an
the original notes agree in every par
tieulaF.
5. The minimum now of spokan
> river at Spokane before operation o
! the Post Falls dam was as follows
1s96-fSsO second feet.
! lss7-1S70 second feet.
3 1sss-244O second feet.
b Isss-26sO second feet.
I 1sO0-2120 second feet.