Results
| Country: | Benin
| | Station: | Malanvilla | | River: | Niger | | Area: | 1000000 km2 | | Lat: | 11.87 | | Lon: | 3.3 | | Source: | RivDIS | | PointID: | 1466 | | Area Units: | km2 | | Discharge Units: | m3/sec | | Starting Year: | 1976 | | Ending Year: | 2004 | | Total Years: | 29 | | Total Usable Years: | 25 | |
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| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Avg Annual |
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| 1976 | 1915 | 1810 | 954 | 278 | 84.3 | 69.1 | 78.3 | 449 | 1010 | 1318 | 1470 | 1533 | 914.06 |
| 1977 | 1703 | 1801 | 1279 | 510 | 143 | 66.4 | 138 | 455 | 1042 | 1054 | 1227 | 1363 | 898.45 |
| 1978 | 1170 | 563 | -9999 | -9999 | 74.3 | 105 | 92.9 | 916 | 1202 | 1282 | 1386 | 1521 | -9999 |
| 1979 | 1646 | 1441 | 629 | 176 | 54.6 | 39.8 | 109 | 613 | 1633 | 1647 | 1582 | 1675 | 937.12 |
| 1980 | 1766 | 1425 | 556 | 154 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 |
| 1981 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | 168 | 488 | 1634 | 2159 | 1635 | 1662 | -9999 |
| 1982 | 1798 | 1954 | 1929 | 1532 | 726 | 341 | 305 | 1152 | 2158 | 1968 | 1661 | 1714 | 1436.5 |
| 1983 | 1868 | 2037 | 1961 | 1537 | 720 | 320 | 322 | 1127 | 1962 | 1635 | 1562 | 1650 | 1391.75 |
| 1984 | 1847 | 2060 | 2077 | 1809 | 1157 | 480 | 436 | 1505 | 2157 | 2444 | 1724 | 1737 | 1619.42 |
| 1985 | 1930 | 2130 | 2123 | 1715 | 872 | 329 | 201 | 726 | 1563 | 1652 | 1497 | 1577 | 1359.58 |
| 1986 | 1685 | 1740 | 1505 | 792 | 272 | 155 | 125 | 1036 | 2019 | 1728 | 1523 | 1586 | 1180.5 |
| 1987 | 1750 | 1939 | 1971 | 1679 | 954 | 355 | 350 | 999 | 1622 | 1540 | 1464 | 1564 | 1348.92 |
| 1988 | 1750 | 1838 | 1803 | 1361 | 573 | 180 | 134 | 879 | 2611 | 1854 | 1479 | 1589 | 1337.58 |
| 1989 | 1710 | 1820 | 1606 | 849 | 262 | 107 | 134 | 685 | 1684 | 1860 | 1523 | 1570 | 1150.83 |
| 1990 | 1743 | 1854 | 1664 | 1031 | 361 | -9999 | -9999 | 653 | 1812 | 1582 | 1421 | 1542 | -9999 |
| 1991 | 1656 | 1679 | 1292 | 497 | 158 | 75 | 211 | 1020 | 2817 | 1913 | 1513 | 1581 | 1201 |
| 1992 | 1717 | 1909 | 1805 | 1295 | 533 | 198 | 152 | 588 | 1387 | 1471 | 1387 | 1468 | 1159.17 |
| 1993 | 1627 | 1775 | 1634 | 893 | 358 | 259 | 282 | 982 | 982 | 2152 | 1793 | 1434 | 1180.92 |
| 1994 | 1793 | 1959 | 1848 | -9999 | -9999 | -9999 | -9999 | -9999 | 1736 | 1671 | 1471 | 1550 | -9999 |
| 1995 | 1687 | 1776 | 1529 | -9999 | -9999 | -9999 | -9999 | 297 | 1160 | 1495 | 1433 | 1584 | -9999 |
| 1996 | 1770 | 1863 | 1568 | -9999 | -9999 | -9999 | -9999 | -9999 | 2373 | 2002 | 1596 | 1726 | -9999 |
| 1997 | 2049 | 2125 | 2176 | 1410 | -9999 | -9999 | -9999 | -9999 | 1509 | 1777 | 1489 | 1634 | -9999 |
| 1998 | 1786 | 1752 | 1200 | -9999 | -9999 | 113 | 190 | 927 | 2139 | 1901 | 1794 | 1786 | -9999 |
| 1999 | 2140 | 2405 | 2119 | 1118 | 359 | 144 | 127 | 640 | 1625 | 1642 | 1460 | 1588 | 1280.58 |
| 2000 | 1731 | 1580 | 783 | 255 | 89.6 | 51.6 | 215 | 472 | 1385 | 1365 | 1421 | 1623 | 914.27 |
| 2001 | 1741 | 1475 | 668 | 202 | 68 | 54.3 | 107 | 734 | 1302 | 1352 | 1356 | 1453 | 876.03 |
| 2002 | -9999 | -9999 | -9999 | 98.2 | 30.8 | 19 | 110 | 558 | 998 | 1225 | 1338 | 1431 | -9999 |
| 2003 | 1181 | 553 | 192 | 61.4 | 23.4 | 19.8 | 176 | 613 | 1580 | 1593 | 1505 | 1656 | 762.8 |
| 2004 | 1817 | 1499 | 578 | 154 | 56.4 | 32.1 | 143 | 660 | 1583 | 1533 | 1536 | 1699 | 940.88 |
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| Avg | 1739.85 | 1731.93 | 1440.35 | 843.77 | 360.43 | 159.69 | 187.23 | 766.96 | 1667.32 | 1671.96 | 1508.79 | 1589.14 | 1152.12 |
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| Std Dev | 196.34 |
398.58 |
566.77 |
594.37 |
331.49 |
128.78 |
90.77 |
273.98 |
471.05 |
306.78 |
127.65 |
99.51 |
228.22 |
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| | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Avg Annual |
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