| Greendale | |
| Settlement Type: | Village in Chilliwack |
| Flag Alt: | Flag of Chilliwack |
| Shield Alt: | Chilliwack Coat of Arms |
| Pushpin Map: | Canada British Columbia |
| Pushpin Map Caption: | Location of Greendale in British Columbia |
| Coordinates: | 49.1167°N -122.05°W |
| Subdivision Type: | City |
| Subdivision Name: | Chilliwack |
| Subdivision Type1: | Province |
| Subdivision Type2: | Country |
| Established Title: | Settled |
| Established Date: | c. 1860 |
| Unit Pref: | Metric |
| Population Density Km2: | auto |
| Timezone1: | PST |
| Utc Offset1: | -8 |
| Timezone1 Dst: | PDT |
| Utc Offset1 Dst: | -7 |
| Postal Code Type: | Postal code |
| Postal Code: | V2P |
| Area Code Type: | Area code |
| Area Code: | +1-604 |
Greendale is a primarily agricultural settlement within Chilliwack, British Columbia, Canada, located east of the City of Vancouver. Greendale is located on the west side of Chilliwack, bordering the east side of the City of Abbotsford. The Vedder River forms the border between Greendale and Yarrow which lies to the South. Greendale was originally called Sumas, but got renamed in 1951 to avoid confusion with the adjoining municipality, the District of Sumas (now part of the City of Abbotsford), as well as Sumas, Washington.[1] The area was once a lake at the base of Sumas Mountain. Sumas Lake was drained in the early 1920s. Greendale has experienced two major floods, after the completed drainage, in 1894 and 1948.[1]
The Great Blue Heron Nature Reserve is located in Greendale.