Velký Pařezitý rybník, Nature reserve in Řásná, Czech Republic.

Velký Pařezitý rybník is a 17.2-hectare pond at 673 metres in the Jihlava district, founded in 1565 and now a nature reserve. Its water reaches a maximum depth of 6 metres, and the surrounding peat bog, up to 4.5 metres thick, supports alder carr and peat birch woodland.

The pond was created in 1565 by Zachariáš z Hradce to supply the town of Telč with water through an artificial channel. This early water engineering shows how people reshaped the land for their needs.

The pond's name refers to the preserved tree stumps at its bottom, which reflect its transformation from forest to water centuries ago. This connection to its past shapes how visitors understand the place today.

The reserve lies at 670–680 m above sea level near Řásná, and the wetland forests below the dam are very hard to reach, so they are left to natural development. The pond is a backup drinking-water source for Telč, and the dam was repaired after the 2018 draining, refilling from September 2019 to summer 2020.

The pond is a backup drinking-water source for Telč, so swimming is not allowed. Water is diverted from the Jihlava basin through a channel into the Telčský potok in the Dyje basin. The deepest peat in the Jihlavské vrchy, 4.5 m, lies here.