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Show 67 -- 64-- " A Well, this large run- off in May, June and July comes largely from the melted snow in the mountains; and as soon as that snow is melted and run off, the flow decreases until the flood which we may have in August and September, on recount of thunderstorms. Thunderstorms are rare during October and November, So we have a condition where about 70 percent of the water runs off in a couple of months, or two and one- half months, with the remainder of the year low, except for frequent cloudbursts." R. 154- 155. The figures given are the mean daily flow, so that many times during the day the peek of the flood might run a great many thousand feet higher than might be shown on the hydrograph, or might be reflected at the gauging station, the figures given being the mean daily flow for the 24 hours. " It is entirely possible, in rivers with such rapid run- off as we have in that country, that the peak rapid run- off as we have in that country, that the peak might be fully one- half times more than some of the ordinary peaks shown on these hydrographs." R. 155. The situation might be illustrated by what happened at Saleratus Wash, which comes in right south of Greenriver, Utah. It was dry in the afternoon that he arrived at Greenriver, Utah. " At three o'clock the first rain, as I understood it, that they had had there for nearly a month, a thunderstorm from the northwest, came up; and at ten o'clock that night Saleratus Wash was out of its ten foot banks. By next morning it was flowing, perhaps, 10,000 second- feet." R. 156. During that flood it might have had 10,000 second- feet, indicating the changes which you might have in a dry wash immediately |