Profile
At its western end, Toulouse, the canal is at an altitude of 132 metres (433 ft) and climbs to 193 metres (633 ft) at its summit level between Ocean Lock and Mediterranee Lock west of Castelnaudary before dropping down to sea level at Sète.
The graph shows the profile of the Canal du Midi from Toulouse (1), through the summit of the canal at Seuil de Naurouze (2), Castelnaudary (3), then Carcassonne (4) and Trèbes (5). The channel continues to Béziers just after Fonsérannes Lock (6), and then on to Agde (7) before flowing in to the Bassin de Thau at Sète (8).
At 193 metres (633 ft), Naurouze is the highest point of the canal with a drop of 57.18 metres (187.6 ft) between the summit and Toulouse and 189.43 metres (621.5 ft) between the summit and Sète. The longest pound is 53.49 kilometres (33.24 mi) between Argens Lock (Aude) and the Fonsérannes Lock (Hérault) while the shortest reach is 250 metres (820 ft) between two locks at Fresquel.
Read more about this topic: Locks On The Canal Du Midi
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