Première nation de War Lake Barrage du lac Moosenose

Approximately 70 m of the southwest shoreline of Moosenose Lake is believed to

have been formed historically as a beaver dam that has since become a permanent landscape feature.  Breaches in that portion of the shoreline in 2004 and 2010, however, resulted in significant drops in the lake water levels and necessitated repairs and reconstruction of the shoreline to form a dam, using silt, clay and rock fill materials obtained from the adjacent area. The breaches also caused flooding in the downstream channel, which does not normally receive flow from the lake. (The outflow from the lake is Butnau Creek, which flows from the northeast end of the lake.)  The downstream flooding resulted in washout at a government winter road bridge crossing. Another breach and drop in lake water levels could jeopardize the lake's fishery, recreational and cultural value, as well as the community's drinking water supply.

 

The purpose of the project is to prevent further breaches of the shoreline and loss of water from the lake. It will entail construction of a 140-m long rockfill dam parallel to and immediately inland from the existing dam.  The new dam and work area will occupy an area between the existing dam and the re-routed winter road. The project work area has undergone recent disturbance associated with the previous dam repairs and construction and maintenance of the winter road. Therefore, habitat disturbance and clearing requirements will be minimal.  The new dam will be constructed as a stand-alone structure (inland and independent of the existing shoreline dam) to avoid disturbance to aquatic habitat and the existing dam. It will have riprap on the northern face (facing the lake and existing dam), to prevent erosion of the new structure should it become exposed to the lake in the future. The confined area between the new dam and the existing

dam is expected to fill with water post-construction and may become a new wetland habitat.

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Dernière mise à jour

End of Public Comment Period

26 February 2020 – The public comment period on the project is closed. Indigenous Services Canada is considering comments received to help inform its determination on whether the carrying out of the project is likely to cause significant adverse environmental effects. .

Participer

Personnes-ressources

Services aux Autochtones Canada
Shelly Johnson, Spécialiste de l'Environnement
365 rue Hargrave
Winnipeg (Manitoba) R3B 3A3
Téléphone : 204-984-0709
Courriel : shelly.johnson@canada.ca


Avertissement

Cette carte n'est fournie qu'à titre d'illustration. Les marqueurs représentent les emplacements approximatifs en fonction des données accessibles. Plus d'un marqueur peut être identifié pour une évaluation donnée.

  • Emplacement

    • Moosenose Lake Dam Reinforcement (Manitoba)

  • Nature de l'activité

    • Barrages et réservoirs

  • Statut de l’évaluation

    Achevé

  • Date de début

    2020-01-27

  • Promoteur

    War Lake First Nation

  • Autorités

    • Services aux Autochtones Canada

  • Type d'évaluation

    Projet situé sur le territoire domanial

  • Numéro de référence

    80431

Évaluations avoisinantes

…dans un rayon de 200 km
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