The habitats where branched bur-reed~(Sparganium erectum) grows:

Chalk river and stream
Coastal floodplain grazing marsh
Fast flowing river and stream
Limestone pavement
Lowland fen
Marginal and inundation
Moist damp verges and banks
Nutrient rich eutrophic lake
Pond ditch and canal
Reedbed
Sluggish river and stream
Upland spring flush
Wet woodland