The Chaumeçon Reservoir

Of the 7 large lakes in the Morvan, all of which flow into the Yonne River via various tributaries, this one, fed by the Chalaux, feeds the Crescent Reservoir. The water collected along the way is added to the Cure. This system helps to regulate the Yonne, the 'enfant terrible' of the Seine, as the people of Icaunais like to call it.

Technical sheet

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  • Walking
    Activity: Walking
  • ↔
    Distance: 18.36 km
  • ◔
    Average duration: 6h 05 
  • ▲
    Difficulty: Difficult

  • ⚐
    Return to departure point: Yes
  • ↗
    Vertical gain: + 286 m
  • ↘
    Vertical drop: - 281 m

  • ▲
    Highest point: 501 m
  • ▼
    Lowest point: 385 m

Photos

Description of the walk

Start from the main car park at the foot of the Brassy church.

(S/E) From the car park, turn right in the direction of Lavault (D210), cross the D6 and continue straight on until you reach l'Huis du Mée.
In this hamlet, turn left onto a track, leaving the left-hand track behind. Continue uphill, ignoring the next 2 paths on the right.

(1) At the end of the clearing, at the Y, take the left-hand path on a contour. At the next T junction, go right and, after approx. 120m, turn left. Continue until you reach a small (but not too small!) tarmac road.

(2) Turn right onto a wide track. The signs indicate Chemin Pèlerin, and the yellow and red GRP® markings become more prominent. In the first part of the climb, turn right onto the path which, as the sign indicates, is forbidden to all vehicles. Let the left and right paths run through the fir grove. Continue along a few low dry-stone walls.

(3) Shortly after the end of this forest, a first window opens up on the left, offering a view of Chaumeçon. At the end of the descent, a path leads to a few houses, then to a crossroads.

(4) Exit onto a road with a picnic table on your right. Turn right. At the crossroads, keep right on the main road. On the left, nestled at the bottom of a densely vegetated area dotted with small ponds, are a number of chalets. Let go of the paths in the undergrowth. Continue along the road through the bends.

(5) Leave the main road to take a tarmac lane on the right, still signposted GRP® and Chemin Pèlerin. The asphalt section ends at a chalet on the left. Continue through the forest on the main path, keeping to the right and left-hand trailheads. The valley floor path is sometimes very wet. Pass a holly border and come to a crossroads of forest tracks.

(6) Turn left. Signs are always present.

(7) At this crossroads, leave the GRP® markings, which continue to the right. The route now bends left around a hillock, then descends to a turnaround platform. At the end of this platform, take the path to continue downhill. Forget the paths that lead to logging areas.

(8) At the road, opposite the lake, turn right. Cross the dam and head for the leisure park.

(9) Leave the road and turn left into the car park. At the foot of the picnic tables, go down between the rails forming a path. Leave this guide on the left to take a path between trees and vegetation (not always obvious, but aim for the lake). Cross a few marshy areas on the footbridges.
The trail follows the reservoir as closely as possible.

(10) The path leads to a road. Turn left and continue along the marked path, always following along the lake. From time to time, you'll come across a few yellow markers labelled 'Sentier du Lac'. Stairs and footbridges make the route easier, which is narrow in places.

(11) Go left, down to the torrent, crossing it by the footbridge (waterfall on the right).

(12) Leave the path on the right and follow the water to the crossroads (D6).

(13) Follow this road to the right for about 200m, and at the farm shed, turn left onto the carriage road.

(14) Turn left, leaving a track on your left. Continue uphill towards the house with the white facade and slate roof. Head for the crossroads.

(15) Leave Le Vivier and turn left onto the road. Drive down this road, passing the Moulin de Tala fish farm. Continue along the road.
Leave the path on the right that leads to the Paintball course and continue along the main road to Brassy. Reach the church car park (S/E).

Waypoints

  1. S/E : km 0 - alt. 409 m - Brassy church car park
  2. 1 : km 2.11 - alt. 474 m - Y-path crossing
  3. 2 : km 3.67 - alt. 464 m - The end of the road
  4. 3 : km 4.53 - alt. 432 m - View over the lake
  5. 4 : km 4.91 - alt. 409 m - End of the road - Picnic table
  6. 5 : km 5.51 - alt. 404 m - Crossing; leaving the main road
  7. 6 : km 7.09 - alt. 486 m - Crossing forest tracks
  8. 7 : km 7.57 - alt. 474 m - Leaving GRP signposting
  9. 8 : km 8.6 - alt. 395 m - Road outlet - Chaumeçon reservoir - Le Chalaux (rivière)
  10. 9 : km 9.36 - alt. 408 m - Car park on the left
  11. 10 : km 11.07 - alt. 396 m - Road and car park
  12. 11 : km 12.4 - alt. 398 m - Torrent on the left
  13. 12 : km 12.92 - alt. 387 m - Along the tank
  14. 13 : km 15.44 - alt. 389 m - Arrival on the D6
  15. 14 : km 15.91 - alt. 399 m - Crossroads
  16. 15 : km 16.7 - alt. 413 m - Exit onto a tarmac road
  17. S/E : km 18.36 - alt. 409 m - Brassy church car park

Practical information

Between (5) and (6), the road is sometimes flooded, so don't hesitate to go over the sides.
The logging roads modify the geography by the appearance of new tracks leading to the cuts in progress.
Between (9) and (13), boundary markers protrude from the path. These are the administrative boundaries of the reservoir.
Caution: footbridges crossing streams and marshy areas are in poor condition in places (October 2017).
This walk is classified as difficult due to the quality of the paths.

Reviews and comments

4.7 / 5
Based on 32 reviews

Reliability of the description
4.6 / 5
Clarity of route map
4.7 / 5
Route interest
4.7 / 5
Nicolas C.
Nicolas C.

Overall rating : 4.3 / 5

Date of walk : Apr 18, 2025
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★☆ Good
Route interest : ★★★★☆ Good
Busy trail : No

Very pleasant walk through varied landscapes in the heart of the Morvan (forests, lake, fields, villages), in a peaceful setting.

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Didier Magnet
Didier Magnet

Overall rating : 5 / 5

Date of walk : Aug 11, 2024
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★★★ Very good
Busy trail : No

Very nice, pleasant walk. The path is clear and easy to find. Perfect in very hot weather as the walk is mainly in undergrowth. No difficulty and very moderate gradient.

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Pégase07530
Pégase07530

Overall rating : 4 / 5

Date of walk : Nov 16, 2023
Reliability of the description : ★★★★☆ Good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★☆☆ Average
Busy trail : No

This walk should be classed as "medium" difficulty at most. Interesting, but it's a shame about the fairly long tarmac section between 15 and Huis du Mée.
I imagine it will be very cool and shady ... for the summer!
After the dam, the return along the water ends up being monotonous and tiring! To remedy this, perhaps make a foray into the Bois Robin?
Of course, at this time of year, there's no one around ... just a few fishermen ... in silence!

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apatenotte
apatenotte

Overall rating : 5 / 5

Date of walk : Oct 07, 2023
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★★★ Very good
Busy trail : No

This route takes in a wide variety of landscapes and can be completed in 4 hours for the more sporty.

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Or élie
Or élie

Overall rating : 5 / 5

Date of walk : Aug 18, 2023
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★★★ Very good
Busy trail : No

Itinerary ok, varied hike, very interesting

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Stéphanie R.
Stéphanie R.

Overall rating : 5 / 5

Date of walk : Jul 26, 2023
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★★★ Very good
Busy trail : No

There's nothing really difficult about this walk, the paths are well maintained and the gradient is low. So it's accessible to a wide range of people, and it's a superb tour to recommend with your eyes shut. The landscapes are varied and offer a fine sample of the welcoming Morvan. The second part, where you walk alongside the lake, is particularly enjoyable: the route is very easy but still has a touch of the wilderness about it. A swim would be very tempting...

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merinis michel
merinis michel

Overall rating : 4.7 / 5

Date of walk : Oct 06, 2022
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★★☆ Good
Busy trail : No

Very pleasant walk, easy and well signposted

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helene.michaud
helene.michaud
• Last modified:

Overall rating : 5 / 5

Date of walk : May 07, 2021
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★★★ Very good
Busy trail : Yes

A very nice walk through varied countryside (woods, fields, lake, etc.), recommended in spring as there are lots of flowers.
For the first part up to point 1, the inhabitants of Brassy advised us to take the signposted Grand Tour du Morvan route, which avoids a stretch of tarmac road and passes through beautiful countryside.

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Aili89
Aili89
• Last modified:

Overall rating : 5 / 5

Date of walk : Oct 20, 2020
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★★★ Very good
Busy trail : No

A very good hike, very well signposted.
Some work on the dam, but we managed to get through!

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Michèle Matthis
Michèle Matthis
• Last modified:

Overall rating : 4.7 / 5

Date of walk : Oct 04, 2020
Reliability of the description : ★★★★☆ Good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★★★ Very good
Busy trail : No

What an adventure! With the dam under construction, we descended the Chalot downstream to find a ford, or rather knee-deep in water, and then climb back up the EDF road to find the circuit at the dam on the left bank. Possible in such dry weather, but not advisable at the moment.

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MICHELPLUME
MICHELPLUME

Overall rating : 4.3 / 5

Date of walk : Sep 08, 2020
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★☆ Good
Route interest : ★★★★☆ Good
Busy trail : No

Hello.
Route taken on 09 09 2020, the description of this route is correct, the footbridges crossing the rivers and marshy areas are in very good condition, having been replaced recently.
The only downside is that at the start of the route at Brassy it is not yet clear that the dam is being maintained and that it is impossible to cross.
Fortunately we were able to make the crossing, as there were only two of us. Thanks to the person in charge.
I don't know how long the work will take.
The reservoir is almost dry following maintenance.

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b.r
b.r

Overall rating : 4.3 / 5

Date of walk : Aug 16, 2020
Reliability of the description : ★★★★☆ Good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★★☆ Good
Busy trail : Yes

good marking, again a few kms more than described (no diversions) but beautiful and good swimming! variety of scenery, good trail

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Eric89
Eric89

Overall rating : 4.7 / 5

Date of walk : Aug 07, 2020
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★☆ Good
Route interest : ★★★★★ Very good
Busy trail : No

The sign for the hamlet of Les Lavaults is not visible; it would be better to point north. Otherwise, the rest of the description is very good. The end on tarmac is a bit long, especially in the heat. Very pleasant walk along the reservoir and through the forest. Completed in 5:30.

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PIERRE MONNIER
PIERRE MONNIER

Overall rating : 5 / 5

Date of walk : Jun 27, 2020
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★★★ Very good
Busy trail : No

A very nice, easy hike: the paths are very pleasant and easy to walk on. The superb lake path has many new footbridges, making it easy to access and always dry.
The Morvan is so wild and beautiful.
As the icing on the cake, we brought back a few porcini mushrooms.
There was a bit of tarmac at the end, but that didn't detract from the interest of this beautiful walk.
PP and MM

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val1407
val1407

Overall rating : 4.3 / 5

Date of walk : Jun 26, 2020
Reliability of the description : ★★★★☆ Good
Clarity of route map : ★★★★☆ Good
Route interest : ★★★★★ Very good
Busy trail : No

lovely walk with friends and children, difficult route slightly overestimated, more like an average route
very good overall

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