anx_II__table__2
Alternative characterisation | Physical and chemical factors that determine the characteristics of the river or part of the river and hence the biological population structure and composition Obligatory factors | altitude latitude longitude geology size Optional factors | distance from river source energy of flow (function of flow and slope) mean water width mean water depth mean water slope form and shape of main river bed river discharge (flow) category valley shape transport of solids acid neutralising capacity mean substratum composition chloride air temperature range mean air temperature precipitation
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Source: EUR-Lex CELLAR · retrieved 2026-08-09 · Text as consolidated on 2026-05-10; changes after this date are not shown.