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Show 1 or* whan it io very cold, thewater freezes 'unevenly, and ice piles up below the riffles, causing snail dams, with mora,or loss disastrous results. Aside froa th e seeping o f the 1'jnd reaulting fTom tho continuous application of winter watar, the moat serious result lathe delay du^to sarin g cleaning. tVheret water 13 allowed in the carala during the winter, tha olaaning traisfc be done in the spring, -and a certain period is necessary to p firm it tha canals to dry bef era the work oan be done. In a normal year, it ia impracticable to -lomni&nae cleaning much before iiarch 15th, on aooount of frost. Thia leads to delay in tie delivery of water, whioh is usually required by fall wheat early in April, and i3 a frequent source of complaint on the part of the ranchers. Some of tha ditohes were oleanad in the fall of 1919, with the reBult that water, was flowing in them April 1, 1920. This practice of fall ©loaning could bo universally followed, and the spring cleaning entirely eliminated. With respect to fall ©loaning, the follo*M.ng ox-traot from a Itrttnr from Mr. B. I,. V/r>olf, l.ngineor ot thn Dry Gulch Irrigation Company, to C. B. 01 berg, Asst, Chief Engineer of the Indian Service, la of interest: 'with rnep^ct to cleaning our ditohes in the fall, I will 3oy that w© hare f con4 tin 1073 _£_ 'rl •_• |