Off-stream reservoir
An off-stream reservoir is a reservoir that is not located along a natural watercourse and is instead supplied by a pipeline, aqueduct or the redirection of adjacent watercourse.[1] An off-stream reservoir may also serve as dry reservoirs, that is, they assist with flood mitigation and do not hold water until such time as a major flood event occurs. Most off-stream reservoirs are impounded by embankment dam walls made from rock-fill or earth-fill.[2]
Off-stream reservoirs may assist in limiting the ecological impact of a reservoir.[3]
Examples of off-stream reservoirs
[edit]- San Luis Reservoir – the largest off-stream reservoir in the United States.[4] Although it is located on a small stream, it gets the vast majority of its water from the California Aqueduct by pumping aqueduct water up-hill to the reservoir
- Sites Reservoir – a planned off-stream reservoir in California[3]
- Cardinia Reservoir – and several other reservoirs that comprise the Melbourne Water supply system, in Australia[5][6]
- Springbank Off-Stream Storage Project – completed in 2025 for flood mitigation, located in Alberta, Canada, the 70.2-megalitre (56.9 acre⋅ft) dry reservoir is fed by a 4.7-kilometre (2.9 mi) diversionary canal from the Glenmore Reservoir[7]
See also
[edit]
References
[edit]- ↑ "Dungeness Off-Channel Reservoir". Sequim official website. Washington, USA. Retrieved August 1, 2025.
- ↑ "Types of Reservoirs". Canada Water Portal. September 8, 2023. Retrieved May 12, 2026.
- 1 2 Alexander, Kurtis (January 23, 2026). "Trump administration signs off on plan for California's biggest reservoir in decades". San Francisco Chronicle. Retrieved January 26, 2026.
- ↑ "San Luis Reservoir State Recreation Area", California State Parks website.
- ↑ "Water supply: History". Melbourne Water. Archived from the original on February 15, 2009.
- ↑ Sugarloaf Pipeline South-North Transfer: Preliminary Business Case Summary (includes schematics). Department of Environment, Land, Water and Planning (Report). Victorian Government. 2016. pp. 5–6. ISBN 978-1-76047-354-9. Retrieved May 12, 2026.
This article incorporates text from this source, which is by State of Victoria available under the CC BY 4.0 license. - ↑ Coulter, Brendan (May 22, 2025). "Long-awaited Springbank off-stream reservoir now in operation". Canadian Broadcasting Corporation. Retrieved May 12, 2026.
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