vodné toky 7 [vynechat] water streams 5 [vynechat] kvalita vody 4 [vynechat] rieky 4 [vynechat] Environmental quality 2 [vynechat] Rivers 2 [vynechat] Water analysis 2 [vynechat] Water quality 2 [vynechat] Water streams 2 [vynechat] analýza vody 2 [vynechat] kvalita životného prostredia 2 [vynechat] rivers 2 [vynechat] technické normy a štandardy 2 [vynechat] water quality 2 [vynechat] biodiversity 1 [vynechat] biodiverzita 1 [vynechat] eutrofizácia vôd 1 [vynechat] eutrophication 1 [vynechat] flood control 1 [vynechat] floods 1 [vynechat] hydraulic structures 1 [vynechat] hydrology 1 [vynechat] hydrológia 1 [vynechat] lowlands 1 [vynechat] nížiny 1 [vynechat] povodia 1 [vynechat] povodne 1 [vynechat] protipovodňová ochrana 1 [vynechat] tourist sights 1 [vynechat] turistické zaujímavosti 1 [vynechat]