The Owendoher River (Irish: An Dothra Bheag, i.e. "The Little Dodder") is a small river in southern County Dublin, Ireland, the largest tributary of the River Dodder, and a part of the River Liffey system.
The Owendoher rises in two main branches. The larger branch flows from Glendoo / Glencullen valley, and meets the second, in turn formed from two streams, one sometimes called Kilakee Stream, from the slopes of Killakee Mountain, and the other Glendoo Stream, from west of Glendoo Mountain. The two branches merge near Rockbrook Cemetery, along with another small stream from Woodbrook and Piperstown, and the Owendoher flows north to Ballyboden, and on to Rathfarnham, receiving the Whitechurch Stream.
The Owendoher joins the River Dodder south of Bushy Park near the former settlement of Butterfield, just south west of Rathfarnham village.
There were historically a number of mills on the Owendoher and its tributaries; none now operate.
As the Owendoher now passes, in its lower reaches, through heavily developed areas, it features many bridges - from where the river joins with the River Dodder to its source in the south:
Road bridge - Dodder View Road - R112Road bridge - Butterfield Avenue - R114Pedestrian bridge - Glenbrook Park to Willbrook RoadService road bridge - Otterbrook housing developmentPedestrian bridge - Fairbrook Lawn to Willbrook RoadRoad bridge - Fairbrook Lawn to Willbrook Road/Ballyboden RoadService road bridge (gated) - beside Boden Wood housing development to Ballyboden RoadService road bridge - Boden Wood housing development to Ballyboden RoadService road bridge - Edenbrook Court housing development to Ballyboden RoadPedestrian bridge - Willowbank Drive to Ballyboden RoadRoad bridge - Ballyroan Road to Ballyboden Road - R817Abandoned bridgeService road bridge - Hillside Park housing development to Ballyboden RoadService road bridge - Owendoher Lodge housing development to Ballyboden RoadService road bridge - Private residenceService road bridge - Owendoher Haven housing development to Ballyboden RoadRoad bridge - Ballyboden Way to Taylors Lane/Ballyboden Road - R113Road bridge - Scholarstown Road to Ballyboden Road - R115Service road bridge - Springvale housing development to Edmonstown RoadPedestrian bridge - Springvale housing development to Edmonstown RoadPedestrian bridge (wooden) - Crossing at old clothes millPedestrian bridge (wooden) - 2nd crossing at old clothes millRoad bridge - M50Service road bridge - Private residenceService road bridge - Edmonstown national school to Edmonstown RoadRoad bridge - Edmonstown Road - R116Service road bridge - Kilmashogue CemeteryService road bridge - Private residenceRoad bridge - Tibradden RoadRoad bridge - Cruagh Road (lower end) - R116Road bridge - Cruagh Road (upper end) - R116Road bridge - Pine Forest Road - R116
