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<br />North Fork irrigation district, The reservoir, an oifstream storage
<br />type, will be formed by four earth and rockfill dams and one dike of
<br />the same type', Horsetooth Dam will have a 35-foot crest width, a 3:1
<br />upstream slope and a 2!:1 downstream slope, and a crest length of about
<br />1,600 feet; height above natural ground about 125 feet. Sa tanka Dike
<br />will nave a 25-foot crest vddth; ,a 3:1 upstream slope, a 2:1 downstream
<br />slope and a crest length of about 275 feet, height above natural ground
<br />about 15 feet, Soldier Canyon Dam will have a creat width of 40 feet;
<br />2t:l upstream and downstream major slope and a crest length of about
<br />1,424 feet, height above stream bed about 205 feet, Dixon Canyon Dam
<br />will have a crest width 'of 40 feet; a 2~:1 upstream and dovmstream major
<br />slope and a crest length of about 1,200 feet, height above stream bed
<br />about 220 feet. Spring Canyon Dam will have a crest width of 40 feet;
<br />a 2t:l upstream and doofnstream major slope, a crest length of about 1,150
<br />feet aad a height above stream bed of about 205 feet, Horsetooth Reser-
<br />voir vdll have a surface area of 1,673 acres and a total storage capacity
<br />of 147,322 acre-feet. The principal outlet will be to the north through
<br />Horsetooth Dam ~~th a small outlet to the east through Soldier Canyon Dam.
<br />Construction started in the summer of 1946.
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<br />Contractor (1) Hinman Brothers Construction Company and Rhoads
<br />Brothers and Shofner, - two Cams - (2) Grafe-Callahan Construction Com-
<br />pany, and G\ll'lther and Shirley, both Nebraska Corporations and W. K. Mc-
<br />Ilyer, an indi '.ridual contractor, - two dams.
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<br />The Flatiron Reservoir, with a useful capacity of about 5,000 acre-
<br />feet, immediately north of the mountain by this name and located on Dry
<br />Creek, eight miles southwes~ of Loveland, has been added to the project
<br />plan to provide reregulation for power operations which will terminate
<br />~t this reservoir, and to pr9vide diversion for the St. Vrain Feeder
<br />leading south toward St, Vrain Creek and for the Horsetooth Feeder lead-
<br />ing to that reservoir. The Horsetooth Feeder will also provide a con-
<br />nection to Big Thompson River near its crossing of that stream. The
<br />various works described ,nIl enable full irrigation operations, Arkin
<br />Reservoir has been eliminated from the pro,~ct plan and its capacity
<br />transferred to Horsetooth Reservoir.
<br />
<br />Power System
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<br />The ultimate power development will provide for a total installed
<br />capacity of 17$,$00 kilowatts in seven plants, which will develop about
<br />7$2,000,000 kilowatt-hours of electrical energy annually. The Marys Lake,
<br />and Estes plants are to be constructed at an early date, These plants,
<br />together with the Green Mountain plant, will develop approximately 240
<br />million kilowatt-hours annually. Less than one-sixth of this power will
<br />be required for project operations and the balance vnll be available for
<br />sale,
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<br />:The liarys Lake power plant located about two miles south of the vil-
<br />lage of Estes Park, will be constructed to utilize the natural drop in
<br />the can$l and tunnel system which carries water from the east portal of
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