Ottenstein Reservoir
Niederösterreich
Ottenstein Reservoir is the uppermost of three dams on the Kamp River in the Waldviertel region of Lower Austria. Created by a 69-meter-high arch dam, it holds up to 73 million cubic meters of water, covering an area of 4.3 square kilometers at full capacity. The reservoir extends up to Zwettl and is surrounded by forested, hilly terrain with rocky shores, giving it a unique fjord-like appearance uncommon in Austria. Its arms are often accessible only by boat, offering peaceful and scenic spots. The reservoir supports diverse fish species including pike, carp, perch, zander, tench, and trout, making it popular for fishing. Numerous hiking, cycling, and horseback riding trails run along the wooded shores, enhancing its appeal as a summer recreational destination. Nearby historical sites such as Ottenstein Castle and the ruins of Lichtenfels can be admired from the lake. The reservoir also functions as a pumped-storage hydroelectric power station, originally constructed in the mid-20th century and currently operated by EVN Naturkraft. Its creation involved overcoming challenges like relocating the dam due to geological faults and negotiating water rights. Ottenstein Reservoir blends natural beauty, outdoor activities, and engineering heritage, making it a valued regional attraction.
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Astuce: The best time to visit Ottenstein Reservoir is during the summer months when the weather is favorable for boating, hiking, and fishing. Visitors are advised to explore the fjord-like arms by (rental) boat for tranquility and unique views. Booking boat rentals in advance during peak season is recommended. The reservoir's multiple trails are well-suited for cycling and horseback riding. Visitors interested in local history can view nearby castles from the water. Fishing enthusiasts can enjoy abundant species but should check local regulations and permits. No specific ticket is required to access the reservoir area, but some activities may have fees. Early planning ensures a more relaxed experience.
Faits intéressants
- •Ottenstein Reservoir is the uppermost of three dams on the Kamp River, followed downstream by Dobra and Thurnberg reservoirs.
- •The reservoir's fjord-like arms are unusual in Austria, resembling Scandinavian landscapes.
- •The dam is an arch dam 69 meters high, with a maximum water volume of 73 million cubic meters.
- •During reservoir creation, a geological fault required relocating the dam 50 meters downstream.
- •The reservoir lies partially on a former military training area depopulated during the Nazi era.
- •It supports diverse fish species including pike, carp, perch, zander, tench, and trout.
- •The hydroelectric power plant was officially opened in 1957 by Chancellor Julius Raab.
Histoire
Initial plans to harness the Kamp River for energy date back to before World War I, but the project was delayed due to the war and economic crises.
In 1943, Siemens-Schuckertwerke proposed a comprehensive hydroelectric development including Ottenstein.
After World War II, Lower Austria sought to meet rising energy demands by building the Ottenstein pumped-storage power plant.
Construction began in 1954, facing challenges such as geological faults necessitating moving the dam 50 meters downstream and negotiations over water rights and quarry access on Soviet-occupied land.
The plant was officially opened in 1957 in the presence of Chancellor Julius Raab.
Today, the reservoir and power plant are operated by EVN Naturkraft, contributing to regional energy supply while serving as a popular recreational site.
Guide du lieu
Arch Dam and Reservoir Arms1954-1957
The 69-meter-high arch dam creates the reservoir with its characteristic fjord-like, branching arms surrounded by forest and rocky shores, offering scenic views and boat access to secluded bays.
Recreational Trails
Numerous hiking, cycling, and horseback riding trails follow the wooded shores, providing visitors with diverse ways to explore the natural landscape around the reservoir.
Nearby Castles: Ottenstein and Lichtenfels
Visible from the reservoir, Ottenstein Castle and the ruins of Lichtenfels Castle sit on peninsulas, adding historical interest to the natural setting and accessible from the water.