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Lemare Dam
Dam
The Lemare dam closes the forebay in the Rivière Lemare valley.
| Structure | Type | Maximum height (m) | Crest length (m) | Volume of fill (m3) |
|---|---|---|---|---|
| Dam | Sand and gravel | 19.0 | 580 | 227,000 |
Instream flow release structure
The instream flow release structure is built into the right abutment of dike LR-34, near the dam.
During operation, the maximum spring instream flow discharged into the Rivière Lemare is 88 m3/s, which is the mean spring flood peak. The flow will be controlled to approximate the shape of the river's mean natural hydrograph (minimum of 5 m3/s).
The flow will not be controlled during the winter, when only the round bottom opening will remain open. Heating systems will de-ice the equipment prior to runoff season so that the instream flow can be controlled in the spring.
