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<br />. <br /> <br />. <br /> <br />. <br /> <br />0016~!1 <br /> <br />Appendix B <br /> <br />!.LlNTHLY SUMMARY OF DISCHARGE <br /> <br />Tongue River at Hiles City, Nontana <br /> <br />Location.--Lat 460211, long 1050481, in SEk sec. 23, T. 7 N., R. 47 E., <br />on right bank 4 miles south of l'liles City and 8 miles upstream from <br />mouth. <br /> <br />Records available.--April 1938 to April 1942, April 1946 to Septen~er <br />1957. Published as "near Niles City" April 1938 to April 1942. Not <br />equivalent to records published as "near Niles City" May 1929 to <br />September 1932. <br /> <br />Gage.--Water-stage recorder. April 1938 to April 1942, ~~re-weight <br />gage at site 8 miles upstream at different datum. <br /> <br />Avera e dischar.e.--13 years (1938-39, 1940-41, 1946-57). 390 cfs <br />282,300 acre-ft per year). <br /> <br />Extremes.--Maximum discharge during year, 4,980 cfs Apr. 24, (gage height, <br />6.31 ft); maximum gage height, 6.33 ft Har. 1 (backwater from ice); <br />rninimwn discharge, 28 cfs Oct. 20. <br /> <br />1938-42, 1946-57: }~imum discharge, 12,000 cfs !1ar. 6, 1949 (gage <br />height, 10.6 ft), float measurement; r'laximwn gage height, 11.80 ft Hal'. <br />6, 1949 (ice jam); no flow July 9-19, Aug. 13, 14, Sert. 28, 1940. <br /> <br /> Second Runoff in <br />Month foot days Max:iI!lum !.linimum I1ean Acre-feet <br />October 1956 2,391 187 29 77.1 4,740 <br />November 8.821 403 210 294 17,500 <br />December 6.935 250 180 224 13.7~ <br />January 1957 4.090 210 80 132 8,110 <br />February 3.935 500 100 14J" 7,000 <br />}larch 7,446 1,000 90 240 14.770 <br />April 11.051 3,~0 174 368 21,920 <br />}lay 15.030 1.000 211 485 29,810 <br />June 60.935 3.710 300 2.031 120,900 <br />July 17.959 1,000 99 579 35,620 <br />August 3.256 218 69 105 6,4~ <br />September 1957 8.839 468 151 295 17. 530 <br />vlater year 1956-57 150.688 3,710 29 413 298.900 <br /> <br />',:1.4. <br />