Country= Brasil Station= Obidos River= Amazonas Area= 4618746 km2 Lat= -1.9 Lon= -55.5 Source= ANEEL PointID= 33 Area Units= km2 Discharge Units= m3/sec Starting Year= 1968 Ending Year= 1995 Total Years= 28 Total Usable Years= 27 Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Avg Annual 1968 4200 6440 150906 165955 197517 195815 171107 152973 141403 133915 125984 126603 131068 1969 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1970 119875 141643 164190 195166 229636 229568 211623 181427 151808 128829 103709 101306 163232 1971 121430 149480 176992 226688 261679 272475 252551 210186 167713 140602 130450 135204 187121 1972 137477 160925 195863 222757 253999 255118 230009 190656 159462 138810 119985 126428 182624 1973 141069 147896 163098 186620 225548 247185 233865 206769 172870 151191 137754 140584 179537 1974 149994 171653 201498 237450 265884 264477 239839 204956 169234 145906 137666 137884 193870 1975 147538 166683 195885 240981 275996 284709 260226 224006 182260 148303 122127 121823 197545 1976 140568 165096 193879 249110 295105 294984 266735 207271 157634 123402 103780 115249 192734 1977 136886 146299 159473 193864 245339 259631 236234 189981 151345 129495 132465 140993 176834 1978 157920 164843 184869 212143 243315 246015 220491 182517 148900 125930 123287 129289 178293 1979 150800 161129 174038 210148 249845 255581 219929 168903 134234 101675 100883 109182 169696 1980 132554 143390 148037 161261 172990 177373 168700 148501 119453 98438 113797 125181 142473 1981 134693 147788 161753 185653 194473 191087 181720 161760 134728 101002 94467 108544 149806 1982 141102 168982 197510 233493 279744 279290 242361 188877 150326 119603 107828 125278 186200 1983 142434 150474 154381 168591 178860 180594 163721 137427 108586 93971 96676 114992 140892 1984 138522 154686 180350 213820 250642 243143 218606 182448 151132 126315 118151 126384 175350 1985 148235 168309 170427 173663 187903 194113 182050 162528 146596 128802 122680 132778 159840 1986 146843 156971 180308 215738 240035 238853 232662 199794 156693 136130 138479 144463 182247 1987 152765 163919 187416 212683 232552 220974 192352 159006 132938 104214 99618 116190 164552 1988 137696 155522 181565 197048 222856 230333 212938 175638 137678 101367 103998 129927 165547 1989 145012 167152 214195 266058 297173 306318 280389 228445 173449 138156 133558 133385 206941 1990 129958 148544 184719 211106 232253 231896 213863 182700 149524 108906 93498 121453 167368 1991 146911 166353 171986 204159 236454 245813 221418 189862 152166 109935 86109 102156 169444 1992 117174 131719 144921 172830 182013 169148 152515 138690 122713 111102 98973 120867 138555 1993 145326 161230 192222 233010 256561 249301 221795 181417 148364 124831 120248 141173 181290 1994 163081 188914 225140 255163 275030 275655 257914 210178 167372 140251 120416 124908 200335 1995 143358 149222 157182 178280 212977 221718 199201 163860 117002 75602 80662 118923 151499 Avg 136053 152047 178252 208275 236903 239302 217956 182621 148355 121729 113602 124857 171663 Std Dev 27905.8 30792.8 19822.2 28210.8 34242.9 35920.5 32463.5 23983.5 17977.2 18660.8 16287.2 11454.4 19577.4