National Hydrological and Hydro-Meterological Services
The National Hydrological and Hydro-Meteorological Services are the prime providers of river discharge data. GRDC is in permanent contact with a large number of national services and other national bodies in the fields of operational hydrology. The responsibility for hydrometric and hydrologic data varies from country to country. Depending on geographic conditions and political priorities, operational hydrology is the responsibility of the energy, agriculture, transport or environment ministries. Most often real-time data and historic data are managed by different institutions.
When responsibility is shared among different institutions, all identified institutions are listed. When a national hydrological service as such does not exist, the link is to that institution from which the Hydrological Adviser of the Permanent Representative with WMO has been designated. Please see the Composition of WMO
publication for detailed information about the currently nominated Permanent Representatives with WMO and their Hydrological Advisers (see right margin). If a national body in charge of hydrology and water resources assessment is not formally established in a country, the link is to the designated government officials responsible for global environment facilities or climate change (Sources: http://www.gefweb.org/ ; http://maindb.unfccc.int/punblic/nfp.pl).
Source of flag graphics: https://www.cia.gov/library/publications/the-world-factbook/docs/flagsoftheworld.html
WMO Region 1: Africa
 Algeria (DZ)
|  Angola (AO)
|  Benin (BJ)
|  Botswana (BW)
|  Burkina Faso (BF)
|  Burundi (BI)
|
 Cameroon (CM)
|  Cape Verde (CV)
|  Central African Republic (CF)
|  Chad (TD)
|  Comoros (KM)
|  Congo, Democratic Republic of the (CD)
|
 Congo, Republic of the (CG)
|  Cote d'Ivoire (CI)
|  Djibouti (DJ)
|  Egypt (EG)
|  Equatorial Guinea (GQ)
|  Eritrea (ER)
|
 Ethiopia (ET)
|  France, Reunion (RE)
|  Gabon (GA)
|  The Gambie (GM)
|  Ghana (GH)
|  Guinea (GN)
|
 Guinea Bissau (GW)
|  Kenya (KE)
|  Lesotho (LS)
|  Liberia (LR)
|  Libya (LY)
|  Madagascar (MG)
|
 Malawi (MW)
|  Mali (ML)
|  Mauritania (MR)
|  Mauritius (MU)
|  Morocco (MA)
|  Mozambique (MZ)
|
 Namibia (NA)
|  Niger (NE)
|  Nigeria (NG)
|  Rwanda (RW)
|  SaoTome and Principe (ST)
|  Senegal (SN)
|
 Seychelles (SC)
|  Sierra Leone (SL)
|  Somalia (SO)
|  South Africa (ZA)
|  South Sudan
|  Sudan (SD)
|
 Swaziland (SZ)
|  Tanzania (TZ)
|  Togo (TG)
|  Tunisia (TN)
|  Uganda (UG)
|  Zambia (ZM)
|
 Zimbabwe (ZW)
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WMO Region 2: Asia
 Afghanistan (AF)
|  Bahrain (BH)
|  Bangladesh (BD)
|  Buthan (BT)
|  Cambodia (KH)
|  China (CN)
|
 China, Hongkong (HK)
|  China, Macau (MO)
|  China, Taiwan (TW)
|  India (IN)
|  Iran (IR)
|  Iraq (IQ)
|
 Japan (JP)
|  Kazakhstan (KZ)
|  Korea, North (KP)
|  Korea, South (KR)
|  Kuwait (KW)
|  Kyrgyzstan (KG)
|
 Laos (LA)
|  Maldives (MV)
|  Mongolia (MN)
|  Myanmar (MM)
|  Nepal (NP)
|  Oman (OM)
|
 Pakistan (PK)
|  Quatar (QA)
|  Russia (RU)
|  Saudi Arabia (SA)
|  Sri Lanka (LK)
|  Tajikistan (TJ)
|
 Thailand (TH)
|  Turkmenistan (TM)
|  United Arab Emirates (AE)
|  Uzbekistan (ZU)
|  Vietnam (VN)
|  Yemen (YE)
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WMO Region 3: South America
 Argentina (AR)
|  Bolivia (BO)
|  Brazil (BR)
|  Chile (CL)
|  Colombia (CO)
|  Ecuador (EC)
|
 France, French Guiana (GF)
|  Guyana (GY)
|  Paraguay (PY)
|  Peru (PE)
|  Surinam (SR)
|  Uruguay (UY)
|
 Venezuela (VE)
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WMO Region 4: North America, Central America and the Caribbean
 Antigua and Barbuda (AG)
|  Aruba (AW)
|  The Bahamas (BS)
|  Barbados (BB)
|  Canada (CA)
|  British Caribbean Territories
|
 Costa Rica (CR)
|  Cuba (CU)
|  Curaçao (CW)
|  Dominica (DM)
|  The Dominican (DO)
|  El Salvador (SV)
|
 France, Guadeloupe (GP)
|  Guatemala (GT)
|  Haiti (HT)
|  Honduras (HN)
|  Jamaica (JM)
|  France, Martinique (MQ)
|
 Mexico (MX)
|  Nicaragua (NI)
|  Panama (PA)
|  Puerto Rico (PR)
|  France, Saint Pierre and Miquelon (PM)
|  Saint Kitts and Nevis (KN)
|
 Saint Lucia (LC)
|  Saint Vincent and the Grenadines (VC)
|  Sint Maarten (Dutch) (SX)
|  Trinidad and Tobago (TT)
|  United States (US)
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WMO Region 5: South-West Pacific
 Australia (AU)
|  Brunei (BN)
|  Cook Islands (CK)
|  Fiji (FJ)
|  French Polynesia (PF)
|  Indonesia (ID)
|
 Kiribati (KI)
|  Malaysia (MY)
|  Marshall Islands (MH)
|  Micronesia, Federated States of (FM)
|  Nauru (NR)
|  New Caledonia (NC)
|
 New Zealand (NZ)
|  Niue (NU)
|  Palau (PW)
|  Papua New Guinea (PG)
|  Philippines (PH)
|  Samoa (WS)
|
 Singapore (SG)
|  Solomon Islands (SB)
|  Timor-Leste (TL)
|  Tonga (TO)
|  Tuvalu (TV)
|  British Overseas Territories
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United States (US)
|  Vanuatu (VU)
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WMO Region 6: Europe
 Albania (AL)
|  Andorra (AD)
|  Armenia (AM)
|  Austria (AT)
|  Azerbaijan (AZ)
|  Belarus (BY)
|
 Belgium (BE)
|  Bosnia and Herzegovina (BA)
|  Bulgaria (BG)
|  Croatia (HR)
|  Cyprus (CY)
|  Czech Republic (CZ)
|
 Denmark (DK)
|  Estonia (EE)
|  Finland (FI)
|  France (FR)
|  Georgia (GE)
|  Germany (DE)
|
 Greece (GR)
|  Hungary (HU)
|  Iceland (IS)
|  Ireland (IE)
|  Israel (IL)
|  Italy (IT)
|
 Jordan (JO)
|  Kosovo
|  Latvia (LV)
|  Lebanon (LB)
|  Liechtenstein (LI)
|  Lithuania (LT)
|
 Luxemburg (LU)
|  Macedonia (MK)
|  Malta (MT)
|  Moldova (MD)
|  Monaco (MC)
|  Montenegro (ME)
|
 Netherlands (NL)
|  Norway (NO)
|  Poland (PL)
|  Portugal (PT)
|  Romania (RO)
| Russia (RU)
|
 San Marino (SM)
|  Serbia (RS)
|  Slovakia (SK)
|  Slovenia (SI)
|  Spain (ES)
|  Sweden (SE)
|
 Switzerland (CH)
|  Syria (SY)
|  Turkey (TR)
|  Ukraine (UA)
|  United Kingdom (GB)
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