WMO Basins and Sub-Basins - South America
| WMOBB | WMOBB_NAME |
|---|---|
| 301 | JURADO |
| 302 | Caribbean Sea (ex 305, 468, 472, 475, 478) |
| 303 | MAGDALENA |
| 304 | CATATUMBO |
| 305 | Caribbean Sea (ex 302, 468, 472, 475, 478) |
| 306 | ORINOCO (ex 307) |
| 307 | META |
| 308 | ESSEQUIBO, AMACURO (also AMAKURA) and BARIMA |
| 309 | North Atlantic (ex 109, 116, 309, 313, 444, 447, 448, 603, 604, 608) |
| 310 | COURANTYNE |
| 311 | North Atlantic (ex 109, 116, 309, 313, 444, 447, 448, 603, 604, 608) |
| 312 | MARONI |
| 313 | North Atlantic (ex 109, 116, 309, 311, 444, 447, 448, 603, 604, 608) |
| 314 | OIAPOQUE (also OYAPOK) |
| 315 | UCAYALI and MARANON |
| 316 | BENI |
| 317 | MAMORE |
| 318 | NEGRO |
| 319 | NAPO |
| 320 | ICA (also PUTUMAYO) |
| 321 | JAPURA (also CAQUETA) |
| 322 | AMAZON (also Amazonas) (ex 323, 324, 325, 326, 327, 328, 329, 330, 331) |
| 323 | AMAZON (also Amazonas) (ex 322, 324, 325, 326, 327, 328, 329, 330, 331) |
| 324 | AMAZON (also Amazonas) (ex 322, 323, 325, 326, 327, 328, 329, 330, 331) |
| 325 | AMAZON (also Amazonas) (ex 322, 323, 324, 326, 327, 328, 329, 330, 331) |
| 326 | AMAZON (also Amazonas) (ex 322, 323, 324, 325, 327, 328, 329, 330, 331) |
| 327 | AMAZON (also Amazonas) (ex 322, 323, 324, 325, 326, 328, 329, 330, 331) |
| 328 | AMAZON (also Amazonas) (ex 322, 323, 324, 325, 326, 327, 329, 330, 331) |
| 329 | AMAZON (also Amazonas) (ex 322, 323, 324, 325, 326, 327, 328, 330, 331) |
| 330 | AMAZON (also Amazonas) (ex 322, 323, 324, 325, 326, 327, 328, 329, 331) |
| 331 | AMAZON (also Amazonas) (ex 322, 323, 324, 325, 326, 327, 328, 329, 330) |
| 332 | JAVARI (also YAVARI) |
| 333 | JURUA (also YURUA) |
| 334 | PURUS |
| 335 | MADEIRA (also MADERA) (ex 316, 317) |
| 336 | TROMBETAS |
| 337 | TAPAJOS |
| 338 | XINGU |
| 341 | North Pacific (ex 405, 406, 445, 446, 455, 456, 457, 471, 474, 477) |
| 342 | PATIA |
| 343 | MIRA |
| 344 | South Pacific (ex 348, 378, 379, 380) |
| 345 | ZARUMILLA |
| 346 | TUMBES (also TUMBEZ) |
| 347 | CHIRA |
| 348 | South Pacific (ex 344, 378, 379, 380) |
| 349 | TOCANTINS |
| 350 | South Atlantic (ex 154, 158, 160, 352, 353, 372) |
| 351 | SAO FRANCISCO |
| 352 | South Atlantic (ex 154, 158, 160, 350, 353, 372) |
| 353 | South Atlantic (ex 154, 158, 160, 350, 353, 372) |
| 354 | TITICACA (ex 355) and POOPO |
| 355 | BLANCA |
| 356 | ZAPALERI |
| 357 | Altiplano plateau (ex 354, 355, 356) |
| 358 | RIO DE LA PLATA |
| 359 | PARANAIBA |
| 360 | GRANDE |
| 361 | TIETE |
| 362 | PARANA (ex 359, 360, 365) |
| 363 | PARANAPANEMA |
| 364 | IGUAZU |
| 365 | PARANA (ex 362, 366, 367, 368) |
| 366 | PARAGUAY (ex 367, 368) |
| 367 | PARAGUAY (ex 366, 368) |
| 368 | PARAGUAY (ex 366, 367) |
| 369 | URUGUAY |
| 371 | LAGUNA MERIN (also LAGOA MIRIM) |
| 372 | South Atlantic (ex 154, 158, 160, 350, 352, 353) |
| 373 | Puna de Atacama plateau (ex 394) |
| 374 | MAR CHIQUITA, Salinas Grandes and Pampa de las Salinas |
| 375 | SALADO (also DESAGUADERO also BERMEJO), COLORADO and NEGRO |
| 376 | CHUBUT and DESEADO and CHICO and SANTA CRUZ and COIG |
| 377 | Patagonia plateau |
| 378 | South Pacific (ex 344, 348, 378, 380) |
| 379 | South Pacific (ex 344, 348, 379, 380) |
| 380 | South Pacific (ex 344, 348, 379, 380) |
| 381 | LAGO BUENOS AIRES (also LAGO GENERAL CARRERA) |
| 382 | GALLEGOS |
| 383 | AZOPARDO and FAGNANO lake |
| 384 | SERRANO and VIZCACHAS |
| 385 | PASCUA and O'HIGGINS (also SAN MARTIN) lake |
| 386 | BAKER and COCHRANE (also PUEYRREDON) |
| 387 | AISEN, SIMPSON and HUEMULES |
| 388 | CISNES |
| 389 | PALENA (also CORCOVADO) |
| 390 | YELCHO and FUTALEUFU |
| 391 | PUELO |
| 392 | MANSO |
| 393 | VALDIVIA and GUAHUN (also HUA HUM) |
| 394 | Bayo, Escondida, Salar del Pular, Mucar and Salina de Jama lagoons |