IHD logo

International Hydrological
Decade (IHD) (1965-1974)
(and atmospheric water cycle)


Below is a checklist of International Hydrological Decade (IHD), as well as other atmospheric water cycle postal items (stamps, souvenir sheets, aerogrammes, postal cards, etc.). Catalog numbers, years of issue, and notes on the items featured are given when available. If readers know of additional information or images, please contact the authors using the e-mail addresses at the bottom of this page.


CountryCatalog Number*Type of Item**Year of IssueNotes on Content
International Hydrological Decade (IHD)
Albania9531966
Albania954
Albania955
Albania956
Brazil10201966
Cambodia1851967
Cambodia186
Cambodia187
Canada4811968
Canada481 fdc1Stamp and cachet on FDC
Canada481 fdc2Stamp and cachet (different) on FDC
Ceylon3981966
Ceylon399
Chad1541968
China (Taiwan)1570 (Mi675)1968
China (Taiwan)1571 (Mi676)
Cuba1723 (Mi1798)1972
Cuba1724 (Mi1799)
Cuba1725 (Mi1800)
Cuba1726 (Mi1801)
Czechoslovakia19311974
Czechoslovakia1931aMS4 (4x 1931)
Czechoslovakia1932
Czechoslovakia1932aMS4 (4x 1932)
Czechoslovakia1933
Czechoslovakia1933aMS4 (4x 1933)
Czechoslovakia1934
Czechoslovakia1934aMS4 (4x 1934)
Czechoslovakia1935
Czechoslovakia1935aMS4 (4x 1935)
Czechoslovakia1931+1934 fdcTwo stamps and cancel and cachet on FDC
Gabon2271968
Greece8491966
Guinea4331966
Guinea434
Guinea435
Jordan5391967
Jordan540
Jordan541
Korea (South)5911967
LebanonC4931966
LebanonC494
LebanonC495
LebanonC496
Malagasy Republic4041967
Malagasy Republic404 proofDie proof
Mali1051967
Mauritania250 (Mi342)1968
Mauritania250 proof1Deluxe proof
Mauritania250 proof2Die proof
Niger1671966
Niger167 fdcStamp and cachet on FDC
Nigeria2071967
Nigeria208
Papua New Guinea2411967
Papua New Guinea244
PolandNonePostal card1973
Russia (USSR)3251 (Mi3275)1966
Russia (USSR)3251 fdcStamp on FDC
Saudi Arabia6411973
Senegal2831967
Senegal284
Senegal285
Senegal286
SyriaC3721966
SyriaC373
Thailand5001968
Togo6401968
Togo640 dsDeluxe sheet
TogoC90
TogoC90 dsDeluxe sheet
Turkey17571967
Turkey1758
Atmospheric Water Cycle
Australia1267 (Mi1306-1310)Strip of 5 (1267 (a-e))1992Elements of the water cycle: rain or lack of rain affect surface moisture and the water table which in turn affect evaporation (drier, less evaporation, "soil blows away"; moister, more evaporation, "forests increase rain")
Canada481 fdcCachet on FDC1968Full water cycle
Cape VerdeNoneNon-overprint of 487 (immediately below)1986Painting Vapor by Hundertwasser (symbolic water vapour in the atmosphere)
Cape Verde487Stamp (immediately above) overprinted
Germany (East)NoneCachet on cover1986H2O - water cycle: precipitation and symbolic evaporation
IsraelUnknown (new issue)2008Part of the water cycle: ice crystals in clouds become rain drops falling to the surface
LebanonC7481975Symbolic evaporation and cloud formation
Portugal28012007Precipitation is part of the "Ciclo de Įgua" (water cycle)
San Marino539From MS6 (539a (4x 539))1962Symbolic evaporation
United StatesNoneCachet on EOS-Terra launch cover1999(Symbolic) evaporation contributing to cloud formation; precipitation falling from the clouds
United StatesNone(Same) cachet on EOS-Terra launch cover (different cancel)

*Scott catalog number, unless prefixed with Mi or BL for Michel.
**FDC = first day cover; SS# = souvenir sheet, MS# = miniature sheet, where # = number of stamps in sheet, and the numbers in parentheses are the catalog numbers of the stamps in the sheet.


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Updated: 2008-11-25