Médiathèque
| Nom | Support | Auteurs | Année | Région |
| Water laws in Nepal: Laws relating to drinking water, sanitation, irrigation, hydropower and water pollution | Article Scientifique | Water Aid Nepal | 2005 | Monde |
| Weinland Wallis | Prospectus | 2006 | Valais | |
| Wiigartneri (Fond photo) | Photo | Musée des Bisses | 2019 | Valais |
| Winning the water war: watersheds, water policies and water institutions | Livre | ROLA, Agnes C.,, FRANCISCO Herminia A., LIGUTON, Jennifer P.T. | 2004 | Monde |
| Wozu braucht es den Verein «Walliser Suonen»? | Prospectus | Verein Walliser Suonen | 2012 | Valais |
| Wyssa (Fond photo) | Photo | Musée des Bisses | 2019 | Valais |
| zones sauvages et paysages cultivés | Article Scientifique | GLOOR, Thomas … [et al.] | 2000 | Valais |