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Mr. Leavt. Is that school population going to be fairly permanent, or is it apt to increase or decrease?

Mr. Page. It appears to be fairly permanent. We did have at one time over 700, but it has been reduced to about 390 by completion of construction of the dam.

CONTINUING INSTALLATION IN GENERATING UNITS OF BOULDER CANYON PROJECT

POWER PLANT

Mr. Leavy. The Boulder Canyon project has not yet been covered in this discussion. Mr. Page, would you make a statement, concerning that?

Mr. Page. I have submitted a justification, but I shall be glad to elaborate here. As to the Boulder Canyon project, of course, our appropriation is out of the Boulder Dam fund, which is set up by the Boulder Canyon Project Act. The requested appropriation is for the purpose of continuing the installation of generating units in the power plant.

There are now four generating units operating. They are furnishing power to the city of Los Angeles. The Metropolitan Water District of southern California, as you recall, has authority to contract to take power from two additional units within 1 year from the time that Los Anpeles starts on its firm contract. The installation of the two units for the metropolitan district is now in progress. This money is needed to continue the installation of those two units.

SUPPLEMENTAL ESTIMATE PENDING BEFORE BUDGKT BUREAU

I call the attention of the committee to the fact that I have made a request to the Bureau of the Budget for a supplemental estimate of $2,000,000, because recently another power contractor has made a request for the installation of two units, making a total of eight of the large units, and one small unit, which will be installed, or in the process of installation within the fiscal year 1938. Therefore, in order to meet the demands on those units and to comply with the request of the power purchasers, we would need a total of about $3,000,000 during this coming fiscal year.

Mr. Leavy. Your estimate here is $1,000,000.

Mr. Page. Yes; but as I say, I sent over to the Budget a supplemental estimate asking for $2,000,000, occasioned by the very recent request of the Southern California Edison Co. for the installation of two units to be completed in the year 1939. It takes more than a year to construct one of those units.

Mr. Leavy. You mean they want to buy the type of power you have there?

Mr. Page. The Boulder power is already contracted for. and we have definite contracts covering all of the output of the plant. There are certain conditions, however, as to when the purchasers shall take that power. The city of Los Angeles needed it first. They have four units, as I say, now operating, and the metropolitan water district is required to take power next. The Southern California Edison Co. was not to take power until 1940, but this company's load has increased so greatly that it lias written to us asking that its two unit? be installed and ready to operate in 1939.

Mr. Leavy. Do you make any preference in the sale of power either to municipalities or corporations?

Mr. Page. All of the power was allocated back in 1930, and approximately 75 or 80 percent of it goes to public or municipal agencies, including the States.

Mr. Leavy. Has your service at this time experienced any difficulty in the sale of the power as you have been bringing it in?

Mr. Page. No; not at all. Of course, in some instances, like Boulder Dam. we have plans for the installation of 17 units. These will be installed as the market develops. We have already a demand for 8y2 of those units in the first year of operation. This early and urgent demand exceeds our original expectations.

SALE OF DUMP POWEli

Mr. Scrugham. Mr. Page, there is something that fits right in here. You have cheap power which is known as "dump power." Mr. Page. Yes, sir.

Mr. Scrugham. That is power which is distinguished from firm or continuous horsepower? Mr. Page. Yes; that is right.

Mr. Scrugham. This dump power is sold at a much lower rate than the firm horsepower by reason of the uncertainty of the time of supply. Will you make a brief statement as to when this dump power will cease to be available and also the rate and who gets it under the terms of the contract, because it fits in at this point. I wish to develop something along that line.

Mr. Page. The Boulder Dam power plant will develop 663,000 firm horsepower continuously, and the amount of secondary power or dump power available is dependent upon the run of the river. For that reason the dump power is of less value than the so-called firm power which can always be depended upon.

The contracts with the power purchasers provide separate rates for the two different types of power. The firm power, or the primary power, is sold at a rate of 1.63 mills for falling water, thus requiring, in addition, each purchaser to operate and maintain his own units, and to pay for those units over a period of 10 years. This makes the actual rate of power developed at the switchboard about 2.2 mills per kilowatt-hour. The same conditions apply to the dump power, except that the basic rate is one-half of a mill, instead of 1.63 mills. Mr. Scrugham. 1.63 mills is the rate for falling water? Mr. Page. Yes, sir; the dump power is worth approximately onethird of the firm power.

Mr. Scrugham. Who gets this dump power under the existing contracts?

Mr. Page. Under the existing contracts the dump power is sold to the Metropolitan Water District of Southern California. If the district fails to use it, the city of Los Angeles has next claim, the city to get half of it and the Southern California Edison Co. the other half.

Mr. Scrugham. That is presumably for the pumping of water? Mr. Page. That is right. The district expects to use this dump power to pump water through its Colorado River aqueduct. The

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city of Los Angeles has a second right on half of it, and the Southern (alifornia Edison ('o, has a second right on the other half of it.

Mr. LEAVY. This dump power is seasonal, and, due to the flow of floodwaters and you can almost calculate, or you can calculate, with a reasonable degree of certainty about when it is to come!

Mr. PAGE. Yes

Mr. LEAVY. And at the time when it does come is there not a substantial amount of power used for irrigation pumping in that ter. ritory!

Mr. Page. Yes; the dump-power production fits almost exactly the irrigation pumping load.

Mr. LEAVY. Is that true of (oulee, too!

Mr. Pace. Yes, sir; the pumping at Grand Coulee contemplates the use of all, or practically all, of the dump power and none of the firm power.

Mr. LEAVY. I do not know whether I asked this question preriously or not, but does the Boulder Canyon project, as it is operating now, indicate that it is going to pay for itself!

Mr. Pace. Oh, yes. The firm-power contracts will repay the Boulder Canyon investment with interest at 4 percent and will create a great surplus.

Mr. LEAVY. How does it involve reclamation?
Mr. Page. The water is used in irrigation downstream.

BOULDER CANYON PROJECT (ALL-AMERICAN CANAL)

Mr. SORUGHAM. That brings us to the All-American (anal, which is as follows:

Boulder (anyon project (All-American (anal): For continuation of construe tion of a diversion dain, and main canal (and appartenant structures) located entirely within the I'nited States connecting the diversion dam with the Impe rial and coachella Valleys in California ; to acquire by proceedings in eminent domain, or otherwise, all lands, rights-of-way, and other property nervesary for such purpm ; and for incidental operations. As authorized by the Boulder (anyon Projet Act, approved Desember 21, 1928 (l. 8 C.. title 43. ch. 12A): to be immediately available and to reina in available until advanced to the (alorndo River Dam Fund, $1.000.0W), which amount shall be available for jirtal Nervior in the District of (olumbia (not to exced $7,

00) and in the field an! for all other objects of expenditure that are lified for projects included in the Interior Department Appropriation Art for the firul year 1938 under the enptnin "Burean of Reclamation, Administrative provisions and limitations**. without regard to the amounts of the limitations therein set forth.

Mr. Page. The justification in support of this item is as follows: ('onstruktion: Estimate of appropriation, 1938. -----

$1.0 ), (X) Funds alallable: Public Works illotinents

9, X), Emergetier Relief allowtion 1937)

11,720.00 General Fm appropriation, fix it! year 1:87

6.** ** Amount nec****ary to complete after the year 18 . --- 10. OX). IN

Estim.ted (unt

-..--..... 34 (N), (**) tuthorization - The e utruction of the All American ('nnal is authorized by to Bastler (anson l'entit of Thrombot 21. 18 (PS (', title 4.1. at 12A). Stan 1 of the act authoriti Norrtar of the Interior to avan striuit. prate, 1. d ittiin mun anal

a pportent wiruatir Hawted eratrols Wit!: 1 11.*. Stanto

e* !nk the L inn rn or other art diversion dan, If dend te pery or adsimble lenkitering or evner

**-*siderations, with the Imperial and Coachella Valleys in California, the ex

ultures for said main canal and appurtenant structures to be reimbursable, de prorided in the reclamation law. Section 3 of the act authorized appropria"Es, not exceeding $165,000,000 in the aggregate, for the construction of AllLurrican (anal and the Boulder Canyon Dam, power plant, and incidental

Location.—The canal is located in the extreme southern portion of California a Imperial and Riverside Counties. The Imperial diversion dam is being constrarted across the Colorado River in Imperial County, Calif., and Yumu faunty. Ariz.

The primary purpose of the All-American Canal is to provide a route entirely thin the United States for the diversion of water from the Colorado River in the 500,000 acres of land in Imperial Valley now receiving water from the

perial (anal, which for the greater portion of its length runs through Wenice. In addition it will provide a water supply for lands not now under rrigation and for lands in Coachella Valley which now obtain water from wells. * eventual irrigated area will be approximately 1,000,000 acres.

Thescriptiom.-The main canal will have a length of about 80 miles. It starts at lmperial diversion dam, 15 miles northwest of Yuma, Ariz., and follows near be river to Laguna Dam, 5 miles downstream, from where it cuts through the

bills at the edge of the mesa to Pilot Knob, following a course generally farallel to the present Yuma main canal, which it will replace, as far as Siphon Imp. After passing Pilot Knob, the general direction of the canal is parallel *w tbe Mexican boundary, being in places within a few hundred feet of it and Fating it in other places, as through the sand hills, by as much as 3 miles.

le canal ends at the west side main canal of the Imperial irrigation district, about 10 miles west of Calexico.

From Imperial Dam to Siphon Drop the canal will have a capacity of 15,000 mund-feet. At Siphon Drop 2,000 second-feet will be diverted for the Yuma Tination project. From Siphon Drop to Pilot Knob, where 3,000 second-feet * i be made available for power in a drop to the Colorado River, the capacity

* 13.00 second-feet. After passing the sand hills there will be a disersion of 21 second-feet into the ('oachella branch. Crossing Imperial Valley, diver

os are made to the existing irrigation system at various places, reducing the aparity at the end to 2,600 second-feet. Between the sand hills and Calexico

are fire drops in the canal, aggregating about 130 feet, available for power plopment. The (Coachella branch will leave the main canal at station 1907 and run in a

hwesterly direction along the edge of the sand hills to a point east of the * w of (oachella, where there is an 80-foot drop. From the drop the canal

s Coachella Valley to the southwest side, down which it continues, to end * the Riverside County line. The capacity at the head will be 2,300 secondut in addition to lands in Coachella Valley, this canal will furnish water to sds on East Mesa. Its total length will be 130 miles.

Imperial Dam, the dirersion point for the canal, is being constructed as part ifbe All-American ('anal project. It will be located on the Colorado River 5

.. upstream from Laguna Dam and 15 miles northeast of Yuma. It is to be & fuorrute structure 2.99) feet long with a hollow or "floating" type overflow

*1.20 feet long and 31 feet high from foundation to crest. The desilting E s which are being constructed in connection with the dam will remove po he wilt before it enters the canal.

Fatmated cost and funds arailable.-The estimated cost of the project is **INNAN). Funds available consist of Public Works allotments of $9.000.000, 1-metrney-relief allocation of $11,500,000, and an appropriation of $6 500,000;

Boyment contracts.--The cost of construction of the dam and canal will be rad tuder contracts with the Imperial irrigation district and the Coachella Saday runty water district, whereby the districts repay the total cost without It over a period of 40 years, beginning 1 year after the completion of the 77 The t'nited States will retain operation and control of the diversion

in and the main canal to Siphon Drop. Below Siphon Drop the I'nited States ay tun over to the districts the operation of the canal on 60 days' notice after

plation, but reserves the right to resume operation at any time on 60 days'

Rpayments by each district for construction will be for the works exclusive ** that district and in proportion to capacity in the common works. The

fortal irrigation district will operate the "common works."

The United States will not construct any power plants on the Canal. Bj the terms of the Boulder Canyon Act the districts may develop the power if they choose. The power rights on the "common works'' are in proportion lo the capacity provided for each district in the canal except at Pilot Knob where the Imperial irrigation district has all power rights. Power rights, on a part of the system used exclusively by one district, belong to that district.

Conxtruction program.—Contract for construction of Imperial Dam and desilting works was awarded on December 14, 1935. Construction was started early in 1930 and by June 30, approximately $1,500.(100 had been expended principally for excavation for the dam abutments and desilting works, driving of concrete, steel, and timber piling, placing of compacted embankments in the desilting works, and commencing the pouring of concrete. Work will lie continued during the fiscal year 1037 and the dam and appurtenant works completed in the fiscal year 1938. The contract work is being financed by Emergency Relief Administration funds and it is expected to be practically completed with funds from this source.

Construction of transmission lines, telephone lines, and the Government camp for engineering forces, was started early in 1935 by Government force* with Public Works Administration funds. This work is completed. The estimated cost of the dam and desilting works is $7,903,000.

The main canal from the desilting works to station 3000+75 is being constructed under several contracts. Excavation contracts have been awarded for this length of canal and good progress is being made. Numerous large canal structures, as railroad and highway bridges, siphons, storm water inlets. and power drops are being built under contract and designs and specification* for similar works are being completed ready for advertisement for hids. Thfe work is being financed with Public Works Administration and Emergency Relief Administration funds, and from the appropriation for the fiscal vearlJRT Work will be continued throughout this length of canal during the fiscal year 1938. The total estimated cost of the canal from the desilting works to station 3090+75 is $15,298,000.

The main canal from station 3090+75 to the end was excavated primarily by Government forces with farmer-owned and driven teams and tractors. The excavation bv machine work in this section of the canal will !*» done under contract. The All-American Canal in this reach generaly parallels the international boundary and cuts the existing canals of the Imperial irrigation district as these canals come out of Mexico. A large number of stmctnrps, including turnouts, checks, siphons, and bridges are. therefore, required hereDesigns for these are being prepared. Work has been financed from Emergency It"lief Administration funds and the fiscal year 1937 appropriation. The totnl estimated cost of this section of canal is $3,832,000.

To t)w> end of November 1936. excavation had been completed on 55 miles of canal. The main canal and dam are expected to be completed in 1938.

It Is planned to begin surveys and designs for the Coaehella main canal and. If possible, start construction of this feature.

Mr. Paoe. As further answer to Mr. Leavy's last question: In addition to the Boulder Canvon Dam and power plant, the AllAmerican Canal is made possihle by the storage of water at Black Canvon. This canal is under construction hv the Bureau of Reclamation for the benefit of lands in the Imperial Valley of California.

PURPOSE OF ALL-AMERICAN CANAL AND VALUE TO THE IMPERIAL VALLEY

Mr. Leavt. I think it would be well to explain to the committee, and for the record, what this All-American Canal is. It is very important.

Mr. Page. The All-American Canal is the main supply canal for the irrigation of the entire Imperial Valley.

Mr. Leavt. In California?

Mr. Pace. Yes, sir. A large part of the Imperial Valley is already under cultivation. Originally the water was diverted almost on the

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