Diving Silvretta Stausee
Site Overview
Silvretta Stausee is a high altitude reservoir dive site in Vorarlberg, Austria, set among the country’s varied freshwater landscapes. The Silvretta Stausee is a high-altitude reservoir reached by the scenic Silvretta High Alpine Road, crystal-clear and technical. Submerged alpine meadows and dam walls create an otherworldly landscape of grass and boulders under the surface. It is extremely cold and at altitude, so a drysuit, altitude certification and conservative planning are essential. Dives are best run as guided or self-sufficient technical expeditions because of the remote setting. The mountain backdrop is spectacular, making it one of the most dramatic reservoirs in Austria. It is strictly for technically minded, cold-water, altitude divers. Conditions are typical of Austrian inland water: visibility generally runs from 12 to 26 metres, the current is low and the water temperature ranges between 2 and 12 degrees Celsius depending on season and depth. The marine life is freshwater and centred on lake trout (brown trout), arctic char, grayling, with the full community described below for those planning a dive. Because of its technical rating and the need for Tec 40+ / Altitude certification, Silvretta Stausee is best approached with the right thermal protection and, where relevant, altitude or overhead training. It is a representative example of why Austrian lake diving, with its cold clarity, submerged forests and wrecks, attracts divers who want something different from tropical reefs.
Dive Briefing
"Entry is made from the shore near Silbertal, and divers should check in with a local centre before entering the water. The Silvretta Stausee is a high-altitude reservoir reached by the scenic Silvretta High Alpine Road, crystal-clear and technical. Submerged alpine meadows and dam walls create an otherworldly landscape of grass and boulders under the surface. It is extremely cold and at altitude, so a drysuit, altitude certification and conservative planning are essential. Dives are best run as guided or self-sufficient technical expeditions because of the remote setting. Plan your profile around a maximum depth of 50 m and an average of 22 m, keeping a close eye on gas and, in deeper sections, on the cold thermocline. Buoyancy control matters: silty or vegetated bottoms and submerged structures are easily disturbed, and altitude requiring certification is a real consideration here. A safe ascent with a surface marker buoy and a clear exit plan completes the dive, with emergency cover routed through Bregenz State Hospital."
Signature Marine Life
Lake Trout (Brown Trout)
Salmo trutta
Best: May, June, July
Arctic Char
Salvelinus alpinus
Best: May, June, July
Grayling
Thymallus thymallus
Best: May, June, September
European Minnow
Phoxinus phoxinus
Best: May, June, July
Noble Crayfish
Astacus astacus
Best: May, June, July
Roach
Rutilus rutilus
Best: May, June, September
Safety & Hazards
- Altitude requiring certification
- Extreme cold with hypothermia risk
- Remote location and very slow EMS
- Sheer dam walls and depth
- Submerged meadow entanglement
- Weather closing the alpine road
Traveler Notes
Who is this for?
Silvretta Stausee suits technical divers holding at least an Tec 40+ / Altitude certification, and it is a strong choice for those who enjoy cold-water, freshwater environments. Photographers, training groups and divers chasing wrecks, walls or macro life will all find something here, provided they respect the temperature and the limits of an inland lake. It is less suitable for absolute novices unless booked through a centre running a supervised course, and overhead or very deep sections should only be attempted with the correct specialist training.
For Non-Divers
The Silvretta High Alpine Road; The Montafon and Verwall valleys; Alpine hiking and dams; Border region to Switzerland
Quick Stats
Dive Logistics
- Bregenz Bodensee Divers
- Lünersee Alpine Dive
- Vorarlberg Tec
Photography Info
Best for: wide_angle
Nearby Stay
Hotel Schwärzler
Bregenz • 35km away
Hotel Hofgarten
Bludenz • 35km away