Country= Brazil Station= Obidos River= Amazonas Area= 4618746 km2 Lat= -1.91 Lon= -55.55 Source= PointID= 514 Area Units= km2 Discharge Units= m3/sec Starting Year= 1928 Ending Year= 1983 Total Years= 56 Total Usable Years= 34 Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Avg Annual 1928 111000 138000 181000 206000 217000 214000 198000 169000 117000 85300 85500 90200 151000 1929 104000 128000 142000 182000 209000 215000 199000 172000 137000 90900 80100 93900 146075 1930 114000 144000 171000 194000 204000 201000 192000 174000 138000 101000 89800 93500 151358 1931 110000 133000 163000 190000 201000 194000 174000 140000 97600 81500 86400 94000 138708 1932 119000 162000 188000 205000 211000 208000 196000 170000 131000 93500 85800 93000 155192 1933 110000 140000 166000 189000 208000 207000 200000 168000 107000 76900 80500 91400 145317 1934 110000 146000 182000 202000 220000 216000 210000 183000 149000 119000 118000 129000 165333 1935 143000 160000 180000 203000 221000 216000 197000 167000 129000 91200 75700 79800 155225 1936 105000 142000 162000 176000 193000 181000 162000 135000 91900 87100 81900 82300 133267 1937 96000 132000 158000 180000 191000 193000 181000 156000 109000 84500 80800 76400 136475 1938 87000 124000 159000 187000 207000 208000 196000 178000 139000 91100 87600 98200 146825 1939 122000 153000 172000 192000 212000 216000 208000 191000 164000 138000 116000 111000 166250 1940 133000 152000 160000 175000 191000 194000 185000 164000 136000 110000 111000 106000 151417 1941 129000 153000 175000 194000 201000 195000 187000 161000 119000 81800 87200 90100 147758 1942 116000 138000 166000 187000 198000 202000 197000 169000 122000 88100 88400 92500 147000 1943 97500 130000 164000 196000 211000 208000 202000 186000 149000 96000 82700 98600 151733 1944 118000 148000 179000 205000 223000 222000 212000 190000 151000 105000 88700 92900 161217 1945 112000 125000 156000 184000 205000 205000 184000 142000 104000 82000 83400 99200 140133 1946 134000 167000 187000 205000 217000 216000 201000 178000 144000 102000 87500 93800 161025 1947 113000 144000 169000 177000 188000 194000 189000 171000 145000 -9999 -9999 -9999 -9999 1948 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1949 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1950 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1951 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1952 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1953 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1954 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1955 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1956 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1957 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1958 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1959 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1960 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1961 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1962 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1963 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1964 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1965 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1966 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1967 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1968 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1969 -9999 -9999 154800 176500 204200 203100 182600 158000 136300 123700 113600 114400 -9999 1970 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1971 -9999 -9999 184000 216000 232000 236000 228000 207000 174000 131000 114000 121000 -9999 1972 125000 165000 199000 214000 228000 229000 218000 195000 164000 128000 103000 110000 173167 1973 114000 129000 155000 182000 212000 225000 217000 199000 168000 135000 108000 114000 163167 1974 133000 166000 195000 220000 236000 235000 221000 197000 163000 125000 108000 108000 175583 1975 128000 160000 190000 221000 241000 246000 233000 211000 177000 129000 88800 88000 176067 1976 137014 173463 188599 217851 236583 237857 231782 209860 176849 105710 71517 93471 173380 1977 125180 136276 161354 191346 216407 225957 220863 203291 163600 119658 121472 136884 168524 1978 162066 172727 178406 196602 216737 214865 214682 198445 157334 106555 101671 113575 169472 1979 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1980 122097 138560 147077 165309 177716 181162 173405 146962 107833 88424 101766 112985 138608 1981 124844 146411 165773 187223 193275 191073 184373 165606 126318 90621 85273 97059 146487 1982 135642 173354 194967 214043 234460 234166 218202 188663 149532 107810 96107 113389 171695 1983 136882 150963 156880 173475 183287 183588 168122 130230 96937 84789 87024 -9999 -9999 Avg 120233 147444 171238 194071 210293 210538 199425 174971 137582 102505 93663.4 100921 155430 Std Dev 15152.9 14659.5 14474.2 14798.5 15837 16868.3 18143.2 21470 24309 17942.1 13478 13830.3 12633.7