Results
| Country: | El_Salvador
| | Station: | SanMarcos | | River: | Lempa | | Area: | 18246 km2 | | Lat: | 13.43 | | Lon: | -88.7 | | Source: | RivDIS | | PointID: | 333 | | Area Units: | km2 | | Discharge Units: | m3/sec | | Starting Year: | 1969 | | Ending Year: | 1980 | | Total Years: | 12 | | Total Usable Years: | 7 | |
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| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Avg Annual |
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| 1969 | 55.5 | 42.5 | 38 | 50 | 162 | 577 | 689 | 1138 | 2189 | 1161 | 277 | 138 | 543.08 |
| 1970 | 101 | 97.5 | 75 | 81 | 128 | 352 | 758 | 1149 | 1756 | 844 | 243 | 152 | 478.04 |
| 1971 | 121 | 99.5 | 77 | 80 | 144 | 314 | 889 | 1143 | 1037 | 1723 | 257 | 156 | 503.38 |
| 1972 | 118 | 103 | 101 | 104 | 210 | 517 | 252 | 352 | 524 | 267 | 165 | 101 | 234.5 |
| 1973 | 60 | 58.5 | 63 | 62.5 | 168 | 717 | 642 | 1234 | 1289 | 1724 | 329 | 182 | 544.08 |
| 1974 | 117 | 94 | 107 | 98 | 178 | 816 | 534 | 383 | -9999 | 438 | -9999 | 97.5 | -9999 |
| 1975 | 72.5 | 59.5 | 53.5 | 45 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 |
| 1976 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 |
| 1977 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 |
| 1978 | 123 | 129 | 116 | 130 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 |
| 1979 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 |
| 1980 | 163 | 162 | 153 | 155 | 274 | 629 | 448 | 644 | 907 | 626 | -9999 | -9999 | -9999 |
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| Avg | 103.44 | 93.94 | 87.06 | 89.5 | 180.57 | 560.29 | 601.71 | 863.29 | 1283.67 | 969 | 254.2 | 137.75 | 460.62 |
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| Std Dev | 32.97 |
35.08 |
33.56 |
34.39 |
45.05 |
169.4 |
195.2 |
361.14 |
551.15 |
545.56 |
53.3 |
30.18 |
115.78 |
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| | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Avg Annual |
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