OCR Text |
Show 2ff UNDERGROUND WATER IN VALLEYS OF UTAH. through diversion into ditches. Because of the considerable evaporation and transpira^ tion incident to such use of the water, only a small per cent of the run- off reaches the eo 20 to 0061 66 86 16 96 56 176 96 26 16 0681 68 88 12 98 98 88 28 18 0881 6Z 8Z U 9Z 5Z < > < \ • * ' '' < ^ < S y. s <* s -'* * < < / • » , / Ui in < t < - S £! 2. oo < o t CM o lake, and with the spread of irrigation it may be expected that this cause will increasingly tend to keep the lake level at a low stage. |