Doubs and Jura · about 12 km from Pontarlier
Source de la Loue
- Max depth40 m
- CertificationFull cave
- SpecialExperienced divers
Diving and fills
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Fills nearby
- Fill stationDiveStation (Neuchâtel, Zwitserland)Air, nitrox and trimix up to 300 bar; nitrox and trimix only during opening hours. O₂: ask.Route ↗
- Fill stationplongee.ch (Puidoux/Rivaz, Zwitserland)Air, nitrox, heliox, trimix, O₂ and helium; 200 and 300 bar outletsRoute ↗
What it looks like
All 1 videos and posts
Videos and posts
From other divers, via YouTube, Instagram and Facebook. They only load when you click; after that, Google's or Meta's privacy rules apply.
- Facebook
doubstourisme
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Other people's footage, not advice: how someone else dives here says nothing about what suits your team. Dive within your training.
The dive
In March 2012 a diver got only a few dozen metres in against the snowmelt current after 25 min; the water was fairly clear.
Profile and sections
In March 2012 a diver got only a few dozen metres in against the snowmelt current after 25 min; the water was fairly clear.
The Source de la Loue is a large karst spring, partly fed by losses of the Doubs downstream of Pontarlier, as the 1901 absinthe spill and the 1910 dye trace showed. Mean discharge is up to ~15 m³/s (another source gives ~6 m³/s), up to ~100 m³/s in flood.
- Depth and profile
- 1969: 110 m / -15 m (first dives, against a strong current) · later explored to ~1,200 m long and -40 m (one source, year unknown)
- Configuration
- No data on passage size or restrictions. You swim in against the outflow: plan your gas for that.
- DPV: unknown
- No data on scooter use or passage size.
Who can dive where
- At least Full cave
- Configurations: Backmount / twinset / Sidemount / CCR / Small cylinders / no-mount (speleo sumps)
- Configuration unknown — research beforehand
- Goes down to 40 m (trimix or deco may be needed)
- Experienced divers only
This is how the planner decides who in your team may dive this cave. Rules your own trip adds (organizer, a mail, the AI) show with your trip.
How to get there
Park at Ouhans, then ~10 min walk down the old path to the spring. Busy tourist site (~150,000 visitors a year); the Maison de la Source visitor centre is open daily in July–August.
Around Source de la Loue
Fills2 fill stations · nearest 48 km
DiveStation (Neuchâtel, Zwitserland)
Route de la Pierre-à-Mazel 4, 2000 Neuchâtel, Switzerland
Air, nitrox and trimix up to 300 bar; nitrox and trimix only during opening hours. O₂: ask.
Tue–Fri 9:00–12:00 and 13:30–18:30, Sat 9:00–16:00; air station 24/7 (subscription: ask)
Dive shop with a fill station; formerly the Neuchâtel branch of plongee.ch. The nearest known trimix address. CCR supplies (sorb) and walk-in fills for visitors: ask.
plongee.ch (Puidoux/Rivaz, Zwitserland)
Route du Verney 18, 1070 Puidoux, Switzerland
Air, nitrox, heliox, trimix, O₂ and helium; 200 and 300 bar outlets
Mon–Fri 9:00–12:00 and 13:30–18:30, Sat 9:00–16:00; air station 24/7 for subscribers
Dive shop in Puidoux (Rivaz); one of the most complete gas lists in the area. Air-station subscription CHF 180 a year (couple CHF 290); air CHF 6–12 per cylinder, +CHF 2 for 300 bar. Walk-in trimix fills for visitors: ask.
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