(CIBW1) COLUMBIA - AT INTL BOUNDARY Discharge Monthly Volumes (kaf) from 05-04 to 09-01 Historical Observations Month FCST %Avg 90% 50% 10% Sep 155 91 125 170 217 May 8148 115 4986 7089 10767 Jun 9908 107 6783 9221 14298 Jul 7749 103 5640 7543 11176 Aug 6040 98 4603 6142 8439 Total 32000 106 22137 30165 44896 Historical Observations mm-dd FCST 90% 50% 10% 05-04 120532 70710 100750 145500 05-05 118200 73460 104500 151700 05-06 115700 70910 106000 161200 05-07 116032 75820 107000 164500 05-08 122419 70050 113500 161900 05-09 130410 71600 116000 163000 05-10 132924 73480 113000 157800 05-11 135772 81110 112000 161600 05-12 140673 78440 112000 168100 05-13 144340 77950 113500 179100 05-14 146656 89730 112500 190600 05-15 149285 86560 117000 194000 05-16 151735 88820 123000 195100 05-17 152949 92310 127500 193400 05-18 153537 91850 126000 196500 05-19 154542 95410 124500 196700 05-20 155812 99210 127000 202700 05-21 156472 95400 131500 217800 05-22 156438 98010 131000 211400 05-23 158110 95230 137000 220300 05-24 157893 101300 146000 225500 05-25 157269 102100 147000 225800 05-26 157012 104200 146500 223000 05-27 156660 106100 149000 218000 05-28 156552 102000 151500 219800 05-29 158032 105200 157500 222800 05-30 175130 108300 161000 227200 05-31 178024 109200 161000 234400 06-01 177287 111200 162500 236400 06-02 177105 112800 163000 240900 06-03 176592 109600 164000 240100 06-04 175242 113100 167500 236500 06-05 174028 118300 165000 232300 06-06 178537 120100 164000 230700 06-07 181221 119500 162500 233300 06-08 180091 120200 159000 241900 06-09 178711 127100 159000 246600 06-10 177078 124200 161000 245800 06-11 175327 127000 159000 250300 06-12 173654 114800 159000 252100 06-13 171895 116800 154500 250700 06-14 170197 117500 153500 250700 06-15 168544 116700 150500 249800 06-16 166703 115800 146000 249300 06-17 164748 113300 150000 249300 06-18 162361 118900 154000 247900 06-19 159972 118800 146000 242900 06-20 157935 115700 150000 239400 06-21 158767 112200 151000 237000 06-22 160385 114800 152500 235300 06-23 160028 109100 154500 252400 06-24 159042 109400 153500 253900 06-25 157131 106700 153500 244500 06-26 154839 102700 154000 236700 06-27 152423 104500 151500 221000 06-28 150417 102500 146000 211800 06-29 148733 104400 142500 221900 06-30 147408 102800 141000 229000 07-01 146222 101400 140500 222100 07-02 145131 100550 139500 215800 07-03 143471 100200 136000 206200 07-04 140825 98160 137500 199200 07-05 138820 100600 135500 201100 07-06 137230 98150 137500 194100 07-07 135758 99590 135500 197200 07-08 134319 99520 136500 194700 07-09 132877 95970 132000 194400 07-10 131523 97480 133000 197000 07-11 130263 92960 131000 195800 07-12 128986 90690 130000 202800 07-13 127766 92180 129500 203300 07-14 126717 98530 128500 198300 07-15 125866 94700 123500 195600 07-16 124838 94310 118500 183900 07-17 123707 93510 116500 186500 07-18 122586 88490 116000 180900 07-19 121557 90680 115000 180700 07-20 120562 88160 113000 184800 07-21 119625 89970 113500 178300 07-22 118724 85520 112500 172600 07-23 117822 84050 114000 168000 07-24 117033 86290 113000 167200 07-25 116221 86170 109000 160500 07-26 115479 86170 112000 142800 07-27 114786 83690 111500 142800 07-28 114028 84550 110000 143000 07-29 113234 82610 110500 140700 07-30 112481 81290 107000 142400 07-31 109302 78080 106000 143200 08-01 106122 83300 102500 148800 08-02 105471 80570 105000 155000 08-03 104775 80650 104000 153500 08-04 104010 79400 105000 148800 08-05 103242 79580 105000 151000 08-06 102563 78460 108000 149600 08-07 101916 78450 107000 146700 08-08 101360 71860 106000 145200 08-09 100835 78120 106500 150100 08-10 100259 75900 106000 155800 08-11 99792 75200 102500 149000 08-12 99363 79320 103500 146500 08-13 98909 78740 101000 148100 08-14 98438 75250 102000 144900 08-15 97955 70650 102500 148700 08-16 97495 74440 103000 140600 08-17 97076 75680 98400 131600 08-18 96672 74710 99700 126100 08-19 96258 73570 99950 133200 08-20 95882 70950 101000 133100 08-21 95562 70690 97050 131400 08-22 95303 73980 97250 131100 08-23 95140 78640 99250 127200 08-24 94947 75140 96900 121700 08-25 94728 72520 94000 121700 08-26 94523 75110 89850 121200 08-27 94246 72420 91500 124600 08-28 93912 70770 89950 121000 08-29 93608 66170 94400 124300 08-30 93347 66280 89100 115300 08-31 92210 64550 89450 109700 09-01 77927 62930 85800 109400