This association includes low-growing, species-poor vegetation dominated by Eleocharis acicularis. It occurs in shallow, seasonally desiccating water bodies such as in the littoral zones of lakes, fishponds and water reservoirs, fish storage ponds, ponds in sand pits, oxbows and littoral zones of large rivers. The water in these habitats is usually mesotrophic to slightly eutrophic and bottoms are sandy or gravelly. This vegetation type occurs in various fishpond areas of the Czech Republic, being most common in southern Bohemia and the Bohemian-Moravian Uplands.