. Bulletin of the Department of Agriculture. Agriculture; Agriculture. OVERFLOW OF RED RIVER OF THE NORTH. 27 plotting the average precipitation at stations having records covering 10 or more years. The maximum and the mean annual precipitation as indicated on figures 6 and 8, respectively, have been greatest in the southeastern portion of the watershed and have diminished in in- tensity to the west and north. Average depths of monthly and annual precipitation in the seven subdivisions (see fig. 5) of the watershed for the period 1892 to 1919 were computed. The depths averaged were measur
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. OVERFLOW OF RED RIVER OF THE NORTH. 27 plotting the average precipitation at stations having records covering 10 or more years. The maximum and the mean annual precipitation as indicated on figures 6 and 8, respectively, have been greatest in the southeastern portion of the watershed and have diminished in in- tensity to the west and north. Average depths of monthly and annual precipitation in the seven subdivisions (see fig. 5) of the watershed for the period 1892 to 1919 were computed. The depths averaged were measured at from 2 to. NORT 30" SOUTH DAKOTA cd^ Fig. 6.—Total precipitation during 1896 on watershed of Red River of the North. 12 weather observation stations in each sub-area. The total volume of precipitation for maximum months and for months immediately pre- ceding months when run-off above Grand Forks has been maximum are shown in figure 9. As is indicated in the various figures and tables, maximum precipi- tation for April, May, and November occurred in 1896 when the annual precipitation was maximum. In 1900 occurred the maximums for August and September but the total precipitation for that year was considerably below the maximum. In no case has the maximum for more than one of the remaining seven months occurred in a single j^ear; each has occurred during a year for which the annual precipi- tation was above the mean for the Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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