]> 2026-04-28T17:47:10+00:00 Case study:Restoring the River Doquette to its original bed 500 en Doquette.pdf Case study description by ONEMA (French National Agency for Water and Aquatic Environments). Approved 0.0011 2.2 2 - 5 m 0.245175 Introducing sediment Re-instatement of old course Adding sinuosity Fédération de la Manche pour la pêche et la protection du milieu aquatique Western Plains Water Agency Regional Council Fédération de la Manche pour la pêche et la protection du milieu aquatique No No Yes true 1.photo site.jpg 2.P1010562 cater.JPG 3.P1010583.JPG 4.DSCF6156.JPG 5.P1010921.JPG 6.DSCF8239.JPG The Doquette in June 2008, prior to restoration with its raised bed (on the left) and its natural bed now used as a drainage ditch (on the right). The works phase during the restoration of the Doquette in October 2008. The works phase during the restoration of the Doquette in October 2008: introduction of coarse materials in order to reconstitute the alluvial mattress of the river bed. The Doquette in October 2008, after the restoration works. The Doquette in May 2009, seven months after the restoration. The Doquette after restoration in the summer of 2009. The flows have diversified. Fédération de la Manche pour la pêche et la protection du milieu aquatique 48.923076387366,-1.2431114733581 Fabien Fédération de la Manche pour la pêche et la protection du milieu aquatique Goulmy Promoting riparian vegetation 0.05 Introducing sediment,,Re-instatement of old course, Adding sinuosity, ,Promoting riparian vegetation,, 706 Doquette Doquette.jpg Complete The Doquette is a small salmonid river, tributary of the River Sienne. The river is home to brown trout and bullhead; it is also likely to be colonised by Atlantic salmon. In the 1970s, a part of the Doquette was moved into a straight channel at the edge of a field. The original bed was retained and transformed into a drainage ditch. The river, now in a “raised” position, deteriorated. The flow patterns became uniform and the habitats of the low water channel became homogenised. Since being moved, the Doquette flowed over the bedrock and could dry out during the low-flow period. In application of the multi-annual restoration and maintenance programme for the catchment area of the River Sienne, there were plans to erect fencing along the raised river. The landowner, who had two channels on his plot, requested modifications in order to avoid the erection of fencing along both the raised river and the drained river. This double intervention would indeed have posed certain problems relating to the use of this land. The local institute in collaboration with the departmental fishing federation, thus proposed to restore the Doquette to its former bed, which would then be the only section to be fenced. The original river bed was wider (mean width of 4.5 metres). 136 tonnes of aggregates were brought in from a quarry and deposited in the river. 77 tonnes of stones and pebbles (from 0 to 250 mm), were used to form the armour layer, with the remaining 59 tonnes being used to reconstitute the alluvial mattress. A connection was made with the river, while the existing connection with the straightened bed was blocked. The old, spring-fed channel was not filled in. Both banks of the restored river were fenced and a ford crossing and drinking trough were installed. Restoring the River Doquette to its original bed restoring the river doquette to its original bed 240 sienne Seine-Normandie Doquette doquette Percy percy Doquette 9 I70490000 9 1 - 10 k€ Fédération de la Manche pour la pêche et la protection du milieu aquatique 2008-10-01Z 2454740.5 2008-10-01Z 2454740.5 2012-07-31T17:32:44Z 2456140.2310648 2017-06-01T15:18:33Z 2457906.1378819 Restoring the River Doquette to its original bed 500 1 plainlist 5 [[Category:Case study]] [[Project title::!Restoring the River Doquette to its original bed]] [[Subcatchment title::Doquette]] Restoring the River Doquette to its original bed# QUERY6843686f17b0366a854c961004680737 500 [8,"smw-constraint-error-allows-value-list","Less than 10 k\u20ac","Less than 1 k\u20ac, 1 - 10 k\u20ac, 10 - 50 k\u20ac, 50 - 100 k\u20ac, 100 - 500 k\u20ac, 500 - 1000 k\u20ac, 1000 - 5000 k\u20ac, 5000 - 10000 k\u20ac, more than 10000 k\u20ac","Total cost category"] Restoring the River Doquette to its original bed# ERRc1e2da6f9b3111df6f5b76221dc63596 Case study:Restore the River Doquette to its original bed 500 en Restore the River Doquette to its original bed REDI 102 en REDI