The collection presents more than 25 examples of river hydromorphology restoration undertaken over the past 20 years throughout France. These actions aim to preserve river hydromorphology or to re-establish hydromorphological processes of rivers.

► Partial or total weir/dam removal

Partial or total weir/dam removal EN - AFB - 2018	Removal of the Fatou dam on the Baume River EN - Onema - 2012
Removal of the Maisons-Rouges dam over the River Vienne EN - Onema - 2010	Lowering the weir of the Houël mill on the Leff River EN - Onema - 2016
Restoration of the river continuity on the Touques Basin EN - Onema - 2015	Removing a weir and renaturalising the Iton River on the Plis industrial site in Hondouville EN - Onema - 2016
Removal of the Kernansquillec dam over the River Léguer EN - Onema - 2010	Removal of the Brosses weir on the Soanan River EN - AFB - 2018
Removal of the dam on the Allier River at Saint-Étienne-du-Vigan EN - Onema - 2015	Removal of the Ver mill weir on the Sienne River EN - AFB - 2018
Adaptive management of hydraulic structures on the Sèvre nantaise and Thouet rivers EN - Onema - 2010	Removal of twenty small structures and diversification of the main channel of the River Couasnon EN - Onema - 2010
Removal of the Cussy weir on the Maria Stream EN - Onema - 2010	Removal of the Stalapos weir on the Alagnon River EN - AFB - 2018

► Elimination or diversion of ponds along rivers

Elimination of a dike blocking a Petersbach tributary EN - Onema - 2010	Elimination of a pond along the Erve River and conservation of the historical heritage in Sainte-Suzanne-et-Chammes EN - Onema - 2016
Removal of five lakes on the Val des Choues stream EN - Onema - 2010

► Reconnection of side arms or ancient meanders

Restoration of side channels of the Loire and its tributaries EN - Onema - 2014

► River gravel input

Widening and sediment reloading of the Drac riverbed in Saint-Bonneten- Champsaur EN - Onema - 2016

► Removal of river embankment or riverbank protection

Restoring the natural dynamics of the upper Adour EN - Onema - 2010

Creation of flood channels and restoration of exchanges between the flood plain and the low-flow channel on the Vezouze EN - Onema - 2015

► Remeandering

Refilling the meanders of the Colostre EN - Onema - 2010

Restoration of the surface flows of two temporary tributaries of the upstream Clauge EN - Onema - 2010

► Reopening of a culverted watercourse

Reopening of the culverted Redon river EN - Onema - 2014

►Restoring a river to its original bed

Restoring the river continuity of the Bresle River by returning it to its original bed in Sénarpont EN - Onema - 2016	Restoring the River Doquette to its original bed EN - 2019
Returning the Fontenelle to its original bed at Saint-Wandrille-Rançon EN - Onema - 2015