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Unscheduled stoppages, hazards and exceptional waterway levels, anywhere. (Public)
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territoriale Centre-Bourgogne 02 Jul 2022 23:29 #130439

  • Tony Radstone
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territoriale Centre-Bourgogne 02 Jul 2022 20:18 #130438

  • Tony Radstone
  • Tony Radstone's Avatar Topic Author
  • Posts: 132
  • Thank you received: 23
Update on the hydrological situation (see slideshow)

The region has been affected by sometimes violent rainfall in recent days. These last ones

Have tended to stabilise the situation of rivers, with a rise in flows.

However, vigilance remains relevant because river flows have tended to decline since then. In addition, these one-time floods do not have a significant effect on the volume stored in the dams.

Indeed, the water reserves of the various dugouts are still good at present, but the trend is declining faster than in previous years.

Invasive exotic plants (see slideshow)

The situation is still constrained in the Digoin and northern Burgundy sectors. Users also report worsening situations on the Canal du Nivernais and around Briare.

The tracking map will be updated with this information.

The aquatic plant control strategy proposed in session is shared by users, namely:

1. Digoin-Decise

2. Burgundy between Tanlay and Venarey - Les Laumes

3. Northern Nivernais

4. Briare-Latéral and Burgundy "Ouche sector" according to constraints

Mr. Delmas (Nicols) indicates that experiments in Port-sur-Saône of mowing at a depth of 1.70m seem to slow down the regrowth of plants.

VNF indicates that a new mowing market is ready with an increased level of technical requirement (moke at 1.80 m depth) and yield.

Operating strategy (see slideshow)

The details of the operating strategy can be found in the slideshow. The main points of attention are:

• Navigable Yonne:

The Spineau dam allowing the junction junction between the Yonne and the Burgundy Canal to be held

Presents a worsening of the state of some of the increases. The risk of rupture is real.

VNF indicates that it has already worked on a palliative solution if this were to happen during the season to ensure continuity of service. Nevertheless, a navigation stop would probably be necessary for about 10 days for its implementation.

VNF is in the process of drafting internal instructions to allow the greatest responsiveness. Instructions will be sent by notice to the boat centre.

• Burgundy Canal:

Given the hydrological conditions on the Armançon River north of the Burgundy Canal, and based on the experiences of recent years, it is very likely that the Thunder-Migennes section will be closed to navigation before mid-July. Conveyages will be organised to allow the evacuation of boats from the area.

In addition, Dam consumption estimates made by VNF show that the 2022 season may be shortened throughout the Burgundy Canal at the end of September if hydrological conditions remain the same this summer.

Several exploitation scenarios of theouche Valley are being considered. VNF will contact the various managers to identify a trend and allow the strategy for the summer to be implemented at the next CLU.

Discussions

James Bairstow (European Waterways) is concerned about the direction of the Burgundy Canal operating scenario and questions the future of PH navigation if the seasons thus shorten sustainably.

VNF indicates that current trends are indeed unfavourable to optimal use of canals but remains optimistic about the collective willingness to work in the future of waterways on the territory of Centre-Burgundy, particularly in the context of discussions around water resources and its multiple uses. In this respect, the dynamics of the territories, although still insufficient, are encouraging.

VNF emphasises the collective need to bring these topics to high stakes. Next CLU: July 13, 2022 from 10:00 a.m. to 12:00 p.m. - by videoconference only-

Chemin Jacques de Baerze - CS 36229 - 21062 Dijon C
The following user(s) said Thank You: Bob Marsland, Paul Hayes, Martin Nunan

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