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6)
him and his heirs forever by the King, subject to a rigorous administration and inspection of the Government, which from its revenues should preserve the Canal in good order, leaving the surplus to the Engineer & his heirs.
The point of division of the waters which flow into the Ocean and Mediterranean is near Tholouse, in the Black mountain, from whence but a moderate supply of water is obtained, conducted by a feeder called "Rigole de la Montagne„ of about 4 metres wide and half of one Metre deep, and in length 18552 metres. Of this feeder 5545 metres are excavated in granite & schist, and it passes through a tunnel at Camp Mazes 121 metres long and nearly three metres in diameter. The work of this tunnel and the deep cutting of 113 metres, at the entrance and exit of it was contracted for at 13 livres the running toise for the deep cutting and 80 livres the running toise for the tunnel. The Masonry necessary for the vault of the tunnel at 20 livres the cubic toise. 
Another feeder called "Rigole de la plaine„ of about the same width and depth, is conducted to the length of 44,571 metres.
Attempts have been made in 1669- 1675- between 1705 and 1725- in 1754 and in 1765, to render this

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"Rigole de la plaine„ useful for navigation, but all these attempts have failed notwithstanding its importance to the plain of Revel and the country adjacent, for the transportation of its grain and other products - a country through which it has a course of about 27 miles.
These Feeders of the Mountain & the Plain, together with the Reservoirs of Saint-Ferréol & Lampy and the Basin of Naurouse, constitute the principal sources of water for the Line of Navigable Canal.
The Reservoir of Saint-Ferréol, when full, has a surface of 66 Hectares, equal to about 132 acres, and its cubic content of water is 6,956,000 Cubic Metres. The reservoir is formed by a Dam across the valley of the small stream Laudot. This Dam is constructed of three parallel walls of solid masonry; About 60 metres is the distance from the centre to each outer wall, making a thickness of 120 metres. The spaces between these walls is filled with earth, clay and pebbles. The outer walls are considerably less in elevation than the centre wall.
The greatest height of this Dam or Barrier is 33 metres. This Dam has always leaked considerably.
The Reservoir of Lampy is formed by a Dam across a small valley. This Barrier is admired for the

Transcription Notes:
The tunnel at Camp Mazes refers to the tunnel through the Cammazes Ridge.