About This Route
The Sense River Näfels section in the canton of Glarus offers a thrilling Class III-IV whitewater kayaking experience through the Swiss Alps' rugged terrain. Starting near the town of Näfels, this 5-kilometer run drops through forested gorges and boulder gardens, featuring continuous rapids like the notorious 'Double Drop' and 'S-Turn'. Popular among intermediate to advanced paddlers, it attracts enthusiasts from the Swiss Canoe Federation events. Local conditions include fast flows from glacial melt in the Glarus Alps, with average gradient of 20 meters per kilometer. Water levels peak in early summer after snowmelt, monitored via the Swiss hydrographic service at hydrodaten.admin.ch. Always scout put-in at the Näfels bridge and take-out at the Haslen weir, respecting private property and Leave No Trace principles by packing out all gear.
Safety Considerations
Swiss safety laws mandate personal flotation devices (PFDs) and helmets for all water sports; non-compliance risks fines up to CHF 500. Flash floods pose the greatest threat, as seen in the 1999 Saxetenbach Gorge tragedy where sudden stormwater surges drowned 21 people due to ignored weather warnings. Check MeteoSwiss forecasts religiously, avoiding paddles if thunderstorms loom. Cold water shock from alpine sources (often below 10°C) can impair swimming; practice combat rolls in pools beforehand. Portage hazardous weirs and strainers, common after winter debris accumulation. Group with experienced paddlers, no fewer than three, and designate a sweep boat with throw bags. Follow Swiss Alpine Club (SAC) protocols: file a float plan with local authorities or apps like SwissTopo.
Essential Gear
Pack a river kayak like the Pyranha Ripper 2 for playboating; NRS Big Water V PFD with quick-release belt; Sweet Protection helmet; Werner Powerhouse paddle; Stohlquist Turbo Neo drysuit for hypothermia prevention; throw bag and rescue knife; first-aid kit with REI Co-op essentials including Sam Splint. Use Noseriders sprayskirt and Mustang survival suit for extended swims.
Emergency Tips
In a pin or foot entrapment, stay upstream and signal with whistle; deploy throw bag from eddy. Call 144 for Rega helicopter rescue, providing GPS coordinates from Garmin inReach. Hypothermia signs demand immediate dry change and shelter; self-evacuate to Haslen road if possible. Prevent group separation in rapids.