Tyrol Mountain Lakes

Safety and Qualification Rules

• Plansee: The published Land Tirol order requires proof of scuba qualification, medical fitness certificate and standard-compliant cold-water equipment. Regular scuba is confined to three approved zones; the regulation sets an upper depth limit of 40 m for ordinary air/Nitrox, which is not a personal recreational depth recommendation. Specialized weighted apnea, solo, technical or training activity needs separate approval. Its Heiterwanger See section specifically prohibits scuba.
• Achensee: Dive with a valid individual permit within the licensed eastern-shore area. The lake terms and 2026 booking rules restrict winter recreational scuba permissions. Respect boats, fishing equipment and lines, and keep permit evidence available.
• Fernsteinsee/Samaranger See: The 2026 order requires adequate logged experience, designated entries, no instruction, no scooters or swimming through logs, no touching bottom and no direct contact with plants or fauna. Samaranger has a six-diver concurrent limit.
• Blindsee: Apply private-lake rules and reconfirm weather, access road, course prerequisites and water permissions with MOHR.

Environmental and Operational Conditions

Alpine elevation affects decompression planning; know how your computer handles altitude and transport to higher passes. Deep water can remain dramatically colder than an apparently warm shoreline; plan for thermal stress, appropriate gas reserve and redundancy, clear turn limits and a controlled exit. Visibility is variable and submerged branches are not a penetration invitation. Assess surface winds, storms, shoreline footing and any passenger boat lanes. Do not conduct self-directed ice dives: Plansee regulations restrict authorized ice operations to supervised Planseecamp programs and notification to local rescue authorities.

For any suspected diving injury, call Austrian ambulance 144 or 112 and state that it may be a dive accident; follow professional guidance on oxygen, positioning, monitoring and transfer. Austria's health portal lists Tyrol water rescue through 144 and the DAN emergency hotline +39 06 4211 5685; it identifies the BGU Murnau hyperbaric facility in Germany for Tyrol/Vorarlberg referrals. This is a specialist referral pathway, not a recommendation to self-drive to a chamber. Record the dive profile, dive-gas mix and symptoms for responding teams, and confirm suitable dive accident and emergency evacuation coverage before travel. In remote coves, share an accurate trailhead or official entry location with your group and keep phones accessible. Austrian health authority numbers.

Fernsteinsee and Samaranger See operators explicitly describe long-lived damage when disturbed sediment covers submerged vegetation. Achensee and Plansee rules constrain underwater entries and prohibit inappropriate removal or fishing disturbance. Good practice is to arrive with buoyancy mastered, avoid fins or hands touching bottom or flora, do not remove anything, do not penetrate submerged timber, never touch wildlife, respect private property, and keep swimmers out of marked underwater diving lanes. The bathing-water quality data from Land Tirol can help evaluate recognized public swimming waters but does not certify dive conditions or grant scuba permission. 2026 operator order | lake legal order | official bathing monitoring.