The Dewdney-Alouette Regional District was a regional district in the Lower Mainland

Lower Mainland

The Lower Mainland is a name commonly applied to the region surrounding and including Vancouver, British Columbia, Canada. As of 2007, 2,524,113 people live in the region; sixteen of the province's thirty most populous municipalities are located there.While the term Lower Mainland has been...

 of British Columbia

British Columbia

British Columbia is the westernmost of Canada's provinces and is known for its natural beauty, as reflected in its Latin motto, Splendor sine occasu . Its name was chosen by Queen Victoria in 1858...

, Canada

Canada

Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

, comprising the district municipalities of Pitt Meadows, Maple Ridge

Maple Ridge, British Columbia

Maple Ridge is a District Municipality in British Columbia, located in the northeastern section of Metro Vancouver. Maple Ridge has a population of approximately 68,949.-History:...

 and Mission

Mission, British Columbia

Mission, the core of which was formerly known as Mission City, is a district municipality in the province of British Columbia, Canada. It is situated on the north bank of the Fraser River overlooking the City of Abbotsford and with that city is part of the Central Fraser Valley. Mission is the...

 and uncincorporated areas east to the Harrison River

Harrison River

The Harrison River is a short but large tributary of the Fraser River, entering it near the community of Chehalis, British Columbia. The Harrison drains Harrison Lake and is the de facto continuation of the Lillooet River, which feeds the lake....

 and north to the southern end of Lillooet Lake

Lillooet Lake

Lillooet Lake is a lake in British Columbia, Canada about 25 km in length and about 33.5 square kilometres in area. It is about 95 km downstream from the source of the Lillooet River, which resumes its course after leaving Little Lillooet Lake, aka Tenas Lake...

. The regional district was partitioned when the Metro Vancouver was expanded to take in Pitt Meadows and Maple Ridge; the regional district's eastern half was combined with the former Central Fraser Valley Regional District

Central Fraser Valley Regional District

The Central Fraser Valley Regional District was a regional district in the province of British Columbia, Canada, located in the Lower Mainland region, south of the Fraser River and west of Chilliwack...

 and the Regional District of Fraser-Cheam

Regional District of Fraser-Cheam

The Regional District of Fraser-Cheam, commonly called the Fraser-Cheam Regional District, was a regional district in the province of British Columbia, Canada, surrounding the Fraser River from Chiliwack to just south of Lytton. It was created in 1967 but rescinded in 1995. Its area is now part...

 to form the Fraser Valley Regional District

Fraser Valley Regional District

The Fraser Valley Regional District is a regional district in British Columbia, Canada. The FVRD covers an area of 13,361.74 km²...

.