national term:
upju baseinu apgabals
national definition:Upju baseinu apgabals ir sauszemes un jūras teritorija, ko veido vienas upes vai vairāku blakus esošu upju baseini, kā arī ar tiem saistītie pazemes ūdeņi un piekrastes ūdeņi, kas saskaņā ar Ūdens apsaimniekošanas likumu ir upju baseinu apsaimniekošanas pamatvienība.
english term:
river basin district
english definition:River basin district is the area of land and sea, made up of one or more neighbouring river basins together with their associated groundwater and coastal waters, which, in accordance with the Water Management Law, is the main unit for management of river basins.

Belarus
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Estonia
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Germany
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