What this solves
Most monsoon-season treks don't fail at the obvious places (summit, pass). They fail at the second creek crossing of the inner kora when the water has risen half a metre in the last hour and the rock-hopping route is underwater. This tool surfaces the highest-risk crossings before you commit, and offers bypass options.
Tell me about your plan
If you leave this blank, the tool uses generic numbered crossings along the inner kora.
How to read the result
Each crossing is given a 0-100 risk score combining three hazards:
Bar colors follow the standard traffic-light scheme. For any "high" crossing, the tool also returns a bypass — usually a higher trail or a 200 m upstream detour.
Risk score is per-crossing, not per-day. The most common monsoon failure mode is the 2nd crossing after the first one — you've used up attention.
Limitations
FAQ
A: The Kashe channel is fed by a larger catchment (4,000+ m peaks around it) and the channel narrows to a 5 m gorge in places — floodwater concentrates. The Luorong stream is wider, slower, and easier to rock-hop.
A: For most crossings yes — usually a higher foot trail used by yak herders. For Kashe main channel in peak flow, the bypass is a 200 m upstream rock-hop on a slab — possible when water is low, dangerous when high.
A: Not advised — wet boots are survivable; lost shoes are not. Wear boots with drainage (Salomon Gromtek / similar) or neoprene wading booties.
A: Hypothermia after an unexpected river crossing, not AMS. If you fall in, get out, change into dry insulation immediately, keep moving. Don't stop to wring out socks.