L'impatto della canicola si fa naturalmente sentire anche sulla temperatura dei corsi d'acqua. Ed è la Tresa, domenica mattina, ad aver fatto registrare, in un suo tratto, il riscaldamento più elevato fra i fiumi elvetici con quasi 27 gradi centigradi. Sabato pomeriggio, l'acqua del fiume aveva rasentato la soglia dei 28 gradi.
Il rilevamento fatto dall'UFAM domenica mattina
Lo evidenziano i dati trasmessi dall'Ufficio federale dell'ambiente (UFAM). Seguono, nella graduatoria delle temperature fluviali attualmente più elevate, la Limmat e l'Aar, con rispettivamente 24,5 e 23,7 gradi. In Romandia il fiume attualmente più caldo è la Broye con 22,8 gradi.
ARi
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