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Home My WebLink About23O - 4 IDF Curve - Figure I-2 230 - Bozeman Atwell Suites Peak Runoff Calculations RAINFALL INTENSITY - DURATION CURVES BOZEMAN, MONTANA 6 ] RAINFALL POWER CURVE FREQURENCY X=11R Y=IN/I IR s 5 —— - 2 YEAR Y=0.36X--60 — 5 YEAR Y=0.52X-64 0 - 100 YEAR 10 YEAR Y=0.64X--65 a 25 YEAR Y=0.78X r' a- 4 _ _ - _---� _ - - -- - ---- 50 YEAR Y=0.92X-.66 -- w ` - 50 YEAR 100 YEAR Y=1.01X--67 � v Z 25 YEAR Cn z 3 - - -- -- — I • =2 . 4 27a 10 YEAR C z 2 _ - - - - — - --— -- J a L 2 YEAR 5 YEAR I I c" 0 -- - ----- ----- --I- - -I- --�-— 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 Tc=9 . 88 min DURATION IN MINUTES