The wetlands Nature Preserve in Krahulčí is found northwest of the village of Krahulčí. In the wetland areas in the Trusovická floodplain of the river are interesting occurrences of numerous populations of threatened species of wetland plants. The main reason for the protection is the critically endangered great fen ragwort that has one of the richest populations in the country here. Other rare plants found here are the endangered Gladiolus imbricatus (sword lily), an endangered Dactylorhiza majalis and willow Salix rosmarinifolia. It is a spawning ground for e.g. brown frogs. The natural regeneration of plants is encouraged with the regular mowing of the meadows.
