Water Supply and Irrigation Papers of the United States Geological Survey . FLOOD SCENES AT LINCOLN. RELATION OF RAINFALL TO RUN-OFF. 27 from records of the United States Weather Bureau. It is true thatthe run-off here plotted is only for the open season, but the pre-cipitation for the same period is used. If complete yearly records ofrun-off were available and corresponding yearly values of precipi-tation were used, the relative positions of the points would not bematerially altered, as each point would then appear above and tothe right of the position now occupied. Moreover, the distancethey
Water Supply and Irrigation Papers of the United States Geological Survey . FLOOD SCENES AT LINCOLN. RELATION OF RAINFALL TO RUN-OFF. 27 from records of the United States Weather Bureau. It is true thatthe run-off here plotted is only for the open season, but the pre-cipitation for the same period is used. If complete yearly records ofrun-off were available and corresponding yearly values of precipi-tation were used, the relative positions of the points would not bematerially altered, as each point would then appear above and tothe right of the position now occupied. Moreover, the distancethey would appear to the right of their present positions would besmall compared with the distance they would be moved upward,for the reason that the precipitation during the winter months is avery small proportion of the annual amount (see Table 7, p. 32); butthis difference does not exist for the run-off factor. In other words,the percentage of precipitation appearing as run-off is much greaterin winter than during the remainder of the year. If records were com-plete, it i
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