Szukana fraza: [Abstract = "There are currently three polders on the central Odra River\: Kiełcz\-Tarnów\-Bycki \- with a capacity of approximately 15 million m3, Połupin \- with a capacity of 70 million m3 and Krzesin\-Bytomiec \- with a capacity of 20 million m3. Three further reservoirs are designed in\: Urad \- 30 million ha, Słubice Górzyca \- 60 million ha and Ługi Górzyckie \- 30 million ha. The authors propose additionally a reactivation of seven archival polders, with total capacity of approximately 4.9 million m3."]