Wodna Dolina in Koszalin is a sport and recreational complex created in 2014 on the Dzierżęcinki Bay which also functions as a storage reservoir. Wodna Dolina also includes a bathing area guarded by WOPR [Voluntary Water Rescue] every day between 10:00-18:00. On the beach and around it there is a beach volleyball court, a playground for children and an open-air gym. Visitors can take advantage of the kayak and pedal boat rental on offer. Moreover, there is also a wakeboarding lift and a wakeboarding track for adrenaline enthusiasts.
Within the area there are toilets, rubbish bins, changing rooms and dining options.
Around the bay there are cycle paths, the length of which will be increased. A floating fountain on the bay is another attraction for the visitors.
Wodna Dolina is a place where various sports, recreational and cultural events are organized, e.g. a summer cinema operated after nightfall.
The water of the bay is restocked from time to time by the members of the Energetyk Circle of Polish Fishing Association from Koszalin, therefore the place attracts many fishing enthusiasts.