Wayai

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] }Le Wayai est un ruisseau de la Région Wallonne en Belgique, affluent de la Hoëgne en rive gauche, donc sous-affluent de la Meuse par l'Ourthe, la Vesdre et la Hoegne. Parcours Prenant ses sources sur les hauteurs de Spa près de l'aérodrome, dans la forêt appelée Bois des vieilles fagnes à 4 kilomètres au sud du hameau de Wayai, il traverse la ville de Spa, reçoit l'Eau Rouge à Marteau, le ruisseau de Chawion puis rejoint Theux où il se jette dans la Hoëgne. Spa ayant subi dans le passé de nombreuses crues catastrophiques, le lac de Warfaaz a été créé en amont pour réguler le débit de la rivière. Depuis 1880 son parcours est partiellement recouvert dans la traversée de la ville de Spa.

Crue de référence 2011 : aqualim.environnement.wallonie

Crue Le , par suite d'importantes pluies en région liégeoise, le Wayai déborde notamment dans la ville de Spa (où son lit majeur est plus étroit, alors qu'à Theux il est plus large). Vers de l'eau empêche toute circulation dans le centre de Spa, la cause étant probablement le fait que la rivière était trop chargée pour pouvoir entrer dans les souterrains de la ville.

Jusqu'à 11 heures le niveau de l'eau monte dans le centre, entraînant la fermeture de l'office du tourisme et de la ligne de chemin de fer reliant Theux et Spa. Certaines écoles ont été fermées.

Galerie

Voir aussi Eau Rouge (Wayai) Liste des sources de Spa Liste des cours d'eau de Belgique Chawion Petit-Chawion Etang du Chawion Hoegne Lac de Warfaaz

Notes et références

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