Freshwater Ecoregions of the World

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Realm	Major Habitat Type	Ecoregion	EcoID
Afrotropic
	large lakes
		Lake Malawi	559
		Lake Rukwa	565
		Lake Tanganyika	542
		Lake Turkana	530
		Lake Victoria Basin	521
	large river deltas
		Niger Delta	506
	montane freshwaters
		Albertine Highlands	541
		Amatolo - Winterberg Highlands	577
		Drakensberg - Maloti Highlands	574
		Eastern Zimbabwe Highlands	563
		Ethiopian Highlands	525
		Fouta - Djalon	510
		Lake Tana	526
		Madagascar Eastern Highlands	581
		Mount Nimba	513
		Mulanje	562
		Western Equatorial Crater Lakes	519
	Oceanic Islands
		Comoros - Mayotte	584
		Mascarenes	586
		Seychelles	585
	temperate coastal rivers
		Cape Fold	578
	temperate upland rivers
		Southern Temperate Highveld	575
	tropical and subtropical coastal rivers
		Ashanti	515
		Bight Drainages	517
		Coastal East Africa	564
		Cuanza	551
		Eburneo	514
		Madagascar Eastern Lowlands	583
		Northern Gulf of Guinea Drainages - Bioko	518
		Northern Upper Guinea	511
		Ogooue - Nyanga - Kouilou - Niari	532
		Pangani	568
		S. Tome & Principe - Annobon	587
		Southern Gulf of Guinea Drainages	533
		Southern Upper Guinea	512
		Tana, Athi & Coastal Drainages	567
		Zambezian Lowveld	576
	tropical and subtropical floodplain rivers and wetland complexes
		Bangweulu - Mweru	544
		Cuvette Centrale	537
		Inner Niger Delta	508
		Kafue	557
		Kasai	546
		Lower Congo	550
		Lower Congo Rapids	549
		Lower Niger - Benue	505
		Lower Zambezi	561
		Mai Ndombe	547
		Malagarasi - Moyowosi	543
		Malebo Pool	548
		Middle Zambezi - Luangwa	558
		Northwestern Madagascar	580
		Okavango	569
		Sangha	534
		Senegal - Gambia	509
		Sudanic Congo - Oubangi	535
		Tumba	538
		Upper Congo Rapids	539
		Upper Lualaba	545
		Upper Nile	522
		Upper Zambezi Floodplains	556
		Volta	516
	tropical and subtropical upland rivers
		Uele	536
		Upper Congo	540
		Upper Niger	507
		Zambezian Headwaters	555
		Zambezian Highveld	560
	xeric freshwaters and endorheic (closed) basins
		Etosha	553
		Horn of Africa	529
		Kalahari	570
		Karoo	573
		Karstveld Sink Holes	554
		Lake Chad	520
		Namib	552
		Northern Eastern Rift	528
		Oman Mountains	443
		Shebelle - Juba	531
		Southern Eastern Rift	566
		Southern Kalahari	571
		Southern Madagascar	582
		Southwestern Arabian Coast	439
		Western Madagascar	579
		Western Orange	572
Australasia
	montane freshwaters
		Lake Poso	751
		Malili Lakes	750
		New Guinea Central Mountains	814
		New Guinea North Coast	813
	temperate coastal rivers
		Bass Strait Drainages	809
		Eastern Coastal Australia	807
		New Zealand	811
		Southern Tasmania	810
		Southwestern Australia	801
	temperate floodplain rivers and wetlands
		Murray - Darling	808
	tropical and subtropical coastal rivers
		Arafura - Carpentaria	805
		Bismarck Archipelago	817
		Kimberley	803
		Lesser Sunda Islands	748
		Malukku	747
		New Caledonia	820
		Papuan Peninsula	816
		Solomon Islands	818
		Southwest New Guinea - Trans-Fly Lowland	815
		Sulawesi	749
		Vogelkop - Bomberai	812
	xeric freshwaters and endorheic (closed) basins
		Lake Eyre Basin	806
		Paleo	804
		Pilbara	802
Indo-Malay
	large river deltas
		Mekong Delta	729
	montane freshwaters
		Borneo Highlands	743
		Ganges Himalayan Foothills	710
		Inle Lake	723
		Lake Lanao	753
	Oceanic Islands
		Andaman Islands	768
		Nicobar Islands	769
	tropical and subtropical coastal rivers
		Aceh	736
		Central & Eastern Java	740
		Chin Hills - Arakan Coast	719
		Coastal Fujian - Zeijang	767
		Eastern Borneo	745
		Eastern Gulf of Thailand Drainages	731
		Eastern Taiwan	758
		Hainan	759
		Indian Ocean Slope of Sumatra & Java	737
		Kapuas	741
		Malay Peninsula Eastern Slope	734
		Mindanao	752
		Northeastern Borneo	744
		Northern Annam	760
		Northern Central Sumatra - Western Malaysia	735
		Northern Philippine Islands	755
		Northwestern Borneo	742
		Palawan - Busuanga - Mindoro	756
		Southeastern Borneo	746
		Southeastern Ghats	716
		Southern Annam	730
		Southern Central Sumatra	738
		Southern Sumatra - Western Java	739
		Sri Lanka Dry Zone	717
		Sri Lanka Wet Zone	718
		Western Ghats	715
		Western Taiwan	757
	tropical and subtropical floodplain rivers and wetland complexes
		Chao Phraya	732
		Ganges Delta & Plain	709
		Kratie - Stung Treng (Mekong)	728
		Lower & Middle Indus	703
		Lower & Middle Salween	722
		Lower Lancang (Mekong)	726
		Mae Khlong	733
		Namuda - Tapi	708
		Northern Deccan Plateau	713
		Sitang - Irawaddy	720
		Song Hong	761
		Southern Deccan Plateau	714
		Xi Yiang	763
	tropical and subtropical upland rivers
		Khorat Plateau (Mekong)	727
		Middle Brahmaputra	712
Nearctic
	large lakes
		English - Winnipeg Lakes	109
		Laurentian Great Lakes	116
	Oceanic Islands
		Bermuda	176
	polar freshwaters
		Alaskan Coastal	101
		Canadian Arctic Archipelago	112
		Central Arctic Coastal	106
		Lower Mackenzie	105
		Upper Yukon	102
		Western Hudson Bay	111
	temperate coastal rivers
		Alaska & Canada Pacific Coastal	103
		Appalachian Piedmont	157
		Canadian Atlantic Islands	115
		Chesapeake Bay	158
		East Texas Gulf	140
		Eastern Hudson Bay - Ungava	113
		Gulf of St.Lawrence Coastal Drainages	114
		Northeast US & Southeast Canada Atlantic Drainages	118
		Oregon & Northern California Coastal	123
		Sabine - Galveston	141
		Sacramento - San Joaquin	125
		Scotia - Fundy	119
		Southern Hudson Bay	110
		St.Lawrence	117
		West Florida Gulf	154
	temperate floodplain rivers and wetlands
		Apalachicola	155
		Columbia Unglaciated	121
		Lower Mississippi	149
		Lower Rio Grande - Bravo	135
		Middle Missouri	143
		Mobile Bay	153
		Upper Mackenzie	104
		Upper Mississippi	148
	temperate upland rivers
		Central Prairie	146
		Columbia Glaciated	120
		Cumberland	151
		Middle Saskatchewan	108
		Ouachita Highlands	145
		Ozark Highlands	147
		Teays - Old Ohio	150
		Tennessee	152
		Upper Missouri	142
		Upper Rio Grande - Bravo	132
		Upper Saskatchewan	107
		Upper Snake	122
		US Southern Plains	144
	tropical and subtropical coastal rivers
		Florida Peninsula	156
		Sinaloa	162
		West Texas Gulf	139
	xeric freshwaters and endorheic (closed) basins
		Bonneville	127
		Colorado	130
		Cuatro Cienegas	136
		Death Valley	128
		Gila	131
		Guzman - Samalayuca	161
		Lahontan	126
		Lerma - Chapala	165
		Llanos El Salado	166
		Mayran - Viesca	163
		Oregon Lakes	124
		Pecos	133
		Rio Conchos	134
		Rio Salado	137
		Rio San Juan (Mexico)	138
		Sonora	160
		Southern California Coastal - Baja California	159
		Vegas - Virgin	129
Neotropic
	large lakes
		Maracaibo	303
	large river deltas
		Amazonas Estuary & Coastal Drainages	323
		Orinoco Delta & Coastal Drainages	309
	montane freshwaters
		Amazonas High Andes	312
		Cuyan - Desaguadero	340
		Orinoco High Andes	305
		Orinoco Piedmont	306
		Ucayali - Urubamba Piedmont	317
		Western Amazon Piedmont	313
	Oceanic Islands
		Galapagos Islands	350
		Juan Fernandez Island	351
	temperate coastal rivers
		Bonaerensean Drainages	347
		Laguna dos Patos	334
		Patagonia	348
		South Andean Pacific Slopes	341
		Valdivian Lakes	349
	temperate floodplain rivers and wetlands
		Lower Parana	345
	tropical and subtropical coastal rivers
		Ameca - Manantlan	168
		Bahama Archipelago	212
		Chagres	209
		Chiapas - Fonseca	201
		Chiriqui	206
		Coatzacoalcos	172
		Cuba - Cayman Islands	211
		Estero Real - Tempisque	204
		Fluminense	352
		Grijalva - Usumacinta	173
		Hispaniola	214
		Isthmus Caribbean	207
		Jamaica	213
		Mosquitia	203
		North Andean Pacific Slopes - Rio Atrato	301
		Northeastern Caatinga & Coastal Drainages	326
		Northeastern Mata Atlantica	328
		Panuco	167
		Papaloapan	171
		Paraiba do Sul	329
		Puerto Rico - Virgin Islands	215
		Quintana Roo - Motagua	202
		Ribeira de Iguape	330
		Rio Balsas	169
		Rio Santiago	164
		Rio Tuira	210
		San Juan (Nicaragua/Costa Rica)	205
		Santa Maria	208
		Sierra Madre del Sur	170
		South America Caribbean Drainages - Trinidad	304
		Southeastern Mata Atlantica	331
		Tramandai - Mampituba	335
		Windward & Leeward Islands	216
		Yucatan	175
	tropical and subtropical floodplain rivers and wetland complexes
		Amazonas Lowlands	316
		Chaco	342
		Orinoco Llanos	307
		Paraguay	343
		Rio Negro	314
	tropical and subtropical upland rivers
		Amazonas Guiana Shield	315
		Essequibo	310
		Guapore - Itenez	319
		Guianas	311
		Iguassu	346
		Lower Uruguay	332
		Madeira Brazilian Shield	321
		Magdalena - Sinu	302
		Mamore - Madre de Dios Piedmont	318
		Orinoco Guiana Shield	308
		Parnaiba	325
		S. Francisco	327
		Tapajos - Juruena	320
		Tocantins - Araguaia	324
		Upper Parana	344
		Upper Uruguay	333
		Upper Usumacinta	174
		Xingu	322
	xeric freshwaters and endorheic (closed) basins
		Atacama	338
		Central Andean Pacific Slopes	336
		Mar Chiquita - Salinas Grandes	339
		Titicaca	337
Oceania
	Oceanic Islands
		Cocos Island (Costa Rica)	217
		East Caroline Islands	829
	oceanic islands
		Fiji	821
		Hawaiian Islands	828
	Oceanic Islands
		Marquesas Islands	826
		Rapa	827
		Samoas	823
		Society Islands	824
		Tubuai Islands	825
	oceanic islands
		Vanuatu	819
	Oceanic Islands
		Wallis - Futuna	822
		West Caroline Islands	830
Palearctic
	large lakes
		Aral Sea Drainages	629
		Biwa Ko	643
		Caspian Marine	452
		Lake Baikal	606
		Lake Issyk Kul - Upper Chu	627
		Lake Onega - Lake Ladoga	409
		Volga Delta - Northern Caspian Drainages	453
	large river deltas
		Nile Delta	524
	montane freshwaters
		Chuya	604
		Er Hai	725
		Indus Himalayan Foothills	705
		Upper Huang He	633
		Upper Huang He Corridor	634
		Upper Indus	706
		Yaghistan	704
		Yunnan Lakes	762
	polar freshwater
		Ob	602
	polar freshwaters
		Anadyr	610
		Barents Sea Drainages	407
		East Chukotka	611
		Iceland - Jan Mayen	401
		Kolyma	609
		Lena	608
		Northern Baltic Drainages	406
		Norwegian Sea Drainages	405
		Taimyr	607
		Yenisei	605
	temperate coastal rivers
		Aegean Drainages	424
		Atlantic Northwest Africa	501
		Cantabric Coast - Languedoc	403
		Coastal Amur	615
		Crimea Peninsula	426
		Dalmatia	419
		Eastern Yellow Sea Drainages	638
		Gulf of Venice Drainages	415
		Hamgyong - Sanmaek	640
		Honshu - Shikoku - Kyushu	642
		Ionian Drainages	421
		Italian Peninsula & Islands	416
		Kamchatka & Northern Kurils	613
		Koryakia	612
		Kuban	428
		Mediterranean Northwest Africa	502
		Northern Anatolia	430
		Northern British Isles	402
		Northern Hormuz Drainages	451
		Okhotsk Coast	614
		Orontes	437
		Sakhalin, Hokkaido, & Sikhote - Alin Coast	641
		Southeast Adriatic Drainages	420
		Southeastern Korean Peninsula	639
		Southern Anatolia	432
		Southern Baltic Lowlands	408
		Thrace	423
		Vardar	422
		Western Anatolia	429
		Western Iberia	412
		Western Transcaucasia	433
	temperate floodplain rivers and wetlands
		Central & Western Europe	404
		Dnieper - South Bug	425
		Dniester - Lower Danube	418
		Don	427
		Eastern Iberia	414
		Huang He Great Bend	635
		Kura - South Caspian Drainages	434
		Liao He	637
		Lower Amur	616
		Lower Huang He	636
		Lower Tigris & Euphrates	441
		Lower Yangtze	766
		Songhua Jiang	620
		Southern Iberia	413
		Upper Tigris & Euphrates	442
		Volga - Ural	410
	temperate upland rivers
		Argun	618