Arizona republican., 1898-12-17

about 32,000 miners inches for six
 months, and would frrigate sufficiently
 about ,000 acres of land for that
 period of time.
 { The dam of the Mcdowell reservoir
 will be 1,595 feet long on top: its aver
 age height will be about ninety feet;
 the profile shows it to be eighty-one 1 feet; that is correct, measured from the present surface, but as the rock will
 have to be cleaned off, and the exposed
 surface dressed down to the hardest part, it is fair to place the average at
 ninety feet. The highest part of the dam will be about 40 feet, but will be
 only that height for few feet, then
 decreasing irregularly to the ends.
 The foundation at the dam site is
 granite, fine grained and hard. The bulkhead and abutments of the Arizona canal headgates were built of rock taken immediately from the dam site. The mountain at the west end of the dam, and tine waterway ridge on the east, is of the same material.
 In my opinion, the dam should be built of solid rock, and as the west end of the dam rests on the toe of a granite mountain the rock for the dam can be quarried from the mountains side and carried to the dam by gravitation.
 
 there are inexhaustible beds of the best hydraulic lime rock. The dam sIoe be- ing only twenty-eigh. miles rom PhOe- nix. the roads leading thereto level and good, and all the material being pTacti- cally at hand, it is my judgment that rock dam, laid in the best hydraulic cement and built upon the most i'm proved methods, can be constructed at a cost not to exceed S700,000.
 The wasteway which nature has pro- Vided on --re east side of the dam site is one of the most favorable features. Its provisions are SO ample that no wa ter from any flood which may occur need pass over the dam. The water after passing over the wasteway emp ties into an arroya, which enters lhe river several hundred feet below the dam site.
 The rises of the Verde bring down more extra water yearly than would be to fill the reservoir. During the summer and fall the Verde river has many rises of short durations and of such quantity that Ehe canals are un- able to receive it. This water can be stored and used when needed, and when there are rains in the valley the water which is running in 'She canals can be shut off and stored at the dam, duQ dSduu WuGn Q6solTSQ.
 The reservoir site being at the head of the irrigation and only one and one half miles above the Arizona canal dam, three miles from Highland and six miles from the Mesa, it will require only few hours time for the water neld in reserve to reach the lands.
 I do not think it expedient to let the stored water enter the river again, but . would recommend, in order to avoid his loss, the construction of a channel 1r waterway from the reservoir to a point on the Arizona canal above it's and utilize it as a transmit ,er in a manner somewhat similar to he method now in use.
 The water for the south side can be lumed over the Arizona canal and car jed by aqueduct across the river and implied into the Highland or into some ,,her channel properly constructed.
 The waterway should leave the reser- -oir on a grade or level twenty-five feet bOve that of the river at the dam site.
 The bed of the Verde river at the dam ite is aboud fifteen feet above the -rade Of the Arizona canal at its head. this channel is constructed as Sug- .ested it will have a fall of about hirty-six feet over the required mount for the conveyance of the vater. This fall would give cOn1nu- usly a force of many hundred horse ower to a plant erected for the pur- csc of its utilization.
 Should this dam be built most of the honey expended in its construction 5culd be spent here. The reservoir rould always be in direct connection Tith our canal system, and therefore overn, without loss of time and water, he irrigation of Salt River valley.
 FRANK P. TROTT, c. E. Call up Honolulu Coffee Co., tele- \ hone 300, and place your orders for