Water Stewardship Information Sources
| Citation | BC Hydro. 2011. Allouette Watershed: Watershed Plan Final Draft. BC Hydro. |
|---|---|
| Organization | BC Hydro |
| URL | http://fwcp.ca/app/uploads/2015/07/alouette_watershed_plan.pdf |
| Abstract/Description or Keywords | The Alouette watershed is located approximately 50 km east of Vancouver, next to the Stave watershed on the north side of the Fraser Valley (Figure 2). The Alouette watershed has a drainage area of 202 km2 that ranges in elevation from 120m to 1800m. The Alouette River (sometimes called the South Alouette River) flows predominantly southwest and discharges into the Pitt River, less than 6 km upstream of its confluence with the Fraser River. Inflows to the Alouette system come primarily from heavy rain in the fall from Pacific frontal systems and snowmelt in the spring. Average rainfall in November is close to 500 mm, but can reach 900 mm. The Alouette-Stave Falls-Ruskin generating complex includes four dams, a 1090 m long diversion tunnel and three powerhouses. Alouette Dam at the south end of Alouette Lake Reservoir provides water storage in the Alouette watershed. About 94% of the annual inflow into Alouette Lake Reservoir is diverted through the diversion tunnel to the Alouette Generating Station on the shore of Stave Lake Reservoir. At the south end of Stave Lake Reservoir are Blind Slough and Stave Falls dams, and Stave Falls Generating Station. Flows from Stave Falls Dam discharge into Hayward Reservoir. Outflow from Hayward Reservoir is controlled by Ruskin Dam, with power being generated at the Ruskin Generating Station. Water diverted from Alouette Lake Reservoir is thus used for power generation at three separate generating stations. The Alouette River system lies within the traditional territory claimed by the Katzie and Kwantlen First Nations. The lower Alouette River flows through parkland, residential area and intensive farmland; it flows through Golden Ears Provincial Park and the municipality of Maple Ridge. |
| Information Type | report |
| Regional Watershed | Lower Fraser |
| Sub-watershed if known | Alouette River |
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| Project status | complete |
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