The River at Saint- Sulpice
Waterfall Venoge in the Tine de Conflens 46.6566.494
The Venoge is an approximately 36 km long northern tributary of Lake Geneva and thus belongs to the catchment area of the river. They drained a section of the West Swiss plateau, which belongs mainly to the region Gros de Vaud. The entire catchment area of the Venoge located within the Canton Vaud.
With six sources Venoge rises on the outskirts of L' Isle at around 660 m above sea level. M. at the foot of the Jura. She is captured and accumulated in the field of L' Isle and forms an elongated pond at the edge of Castle Park. Even within L' Isle joins from the left of the creek Chergeaule. The sources of this stream is located on the slope of the Jura in the forest below the pass, crossing the Col du Mollendruz. The Chergeaule flows through the erosion valley Combe à Berger on Jura south slope and reaches the foot of the Jura plateau L' Isle, where it unites with the Venoge.
Below L' Isle Venoge the flows initially to the northeast in a slightly sunken into the plateau valley that usually has a flat valley floor of approximately 200 m wide. To the west of La Sarraz opens in the rock basin by Tine de Conflens from the right of the Veyron, the most important tributary of the Venoge who has traveled a longer path to its mouth as the Venoge itself after this confluence followed by a 1 km long gorge through the Jurakalkfelsen before the valley opens at La Sarraz.
The Venoge now flows eastward into the broad valley beyond ( approximately 460 m above sea level. M. ), which is only by the bolt of the Mormont from the north adjacent Orbeebene separately ( in the catchment area of the Rhine ). From now on, the slope of the river is to the mouth of Lake Geneva usually less than 0.5 %. In the valley at Eclépens the last significant change in the flow direction takes place; the Venoge turns here to the south.
The lower reaches of the Venoge is located in a 0.5 to 1 km wide valley that is sunk in some cases more than 100 m into the surrounding plateau of Gros de Vaud. In Cossonay and Penthalaz the valley is populated and is at Aclens a larger commercial and industrial zone, otherwise moves the Venoge with numerous meanders in a largely unspoilt and lined with extensive riparian valley. From the west ends here with the Senoge another important tributary.
In Bussigny -pres-Lausanne on the western edge of the town Lausanne Venoge joins the Lake Geneva area. The valley widens, now has bigger settlement zones and is crossed by the main modes of transport (rail and highway), which run along the north shore of Lake Geneva. Nevertheless, the flow is accompanied to its mouth by a riparian forest belt. With a slightly advanced into the lake alluvial the Venoge opens at an altitude of 372 m above sea level. M. between the villages Préverenges and Saint-Sulpice (VD ) ( approximately 7 km west of Lausanne ) finally into Lake Geneva.
Among the important places along the Venoge include L' Isle, La Sarraz Cossonay and Bussigny -pres-Lausanne. For long sections of the river moves in a natural or at least close to nature held bed. Apart from a short stretch at L' Isle, the section between La Sarraz and Cossonay was only wedged and straightened in a channel bed.
The first recorded mention of the river took place in the year 814 under the name Venobia. Later, the names Venubia (937 ) Vinogia appeared ( in the 12th century), Venopia ( 1313 ) and Venogy ( 1316 ). The etymology of the river name is unclear; probably derived the word originally from the Celtic language.
In the 16th century, was founded in Pompaples on the Talwasserscheide between the catchment areas of the Rhône and Rhine a mill ( Moulin Bornu ). For this part of the water of the Nozon was derived in a channel and to the mill. Below the mill divides the channel: one part flows back to Nozon and hence to the Rhine, but the other flows south to Venoge. A small proportion of the water Venoge so comes from the catchment area of the Nozon.
At the time of the Thirty Years' War, the project was to connect the Rhone and the Rhine in the area in the Swiss Plateau by a waterway. In the catchment area of the Rhône therefore the lower reaches of the Venoge between Eclépens and Lake Geneva, should be developed into a navigable waterway. The connection with the Orbe should be to build the Entrerocheskanals produced by the Mormont. From 1638 to 1648 the canal was built and the channeled section of the Venoge from Mormont up to Cossonay. But financial difficulties prevented the expansion of the portion of Venoge between Cossonay and Lake Geneva, where several locks should have been created. The transport of goods was therefore in the area of non-upgraded parts piece across the street, so the connection never played an important role.
Since the Middle Ages the water power of the Venoge has been used in various places for the operation of mills and sawmills. Shortly after 1850, with the construction of the railway line Yverdon- les- Bains - started Lausanne, which was opened on 7 May 1855, always runs between Eclépens and Bussigny -pres-Lausanne in the valley of the Venoge.
Today there are projects to renature the Venoge between La Sarraz and Cossonay and to bring the valley back to a more natural state.