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Eugenia Lake

A shallow Grey Highlands reservoir shaped by cottage shorelines, islands and more than a century of hydroelectric history.

Lake Eugenia is a shallow, man-made reservoir in Grey Highlands, Ontario, created in 1915 for hydroelectric generation. Around 400 residences line its shoreline, with most historically used on a seasonal basis (Harrison et al., 2025).

Location Municipality of Grey Highlands, Grey County, Ontario.

Geographic Facts

Surface Area 7.23 km²
Maximum Depth 39.9 ft
Elevation 197.8 m
Latitude 44.3268
Longitude -80.498

About the Lake

Eugenia Lake is a shallow reservoir fed primarily by the upper Beaver River and managed for hydroelectric generation. Ontario Power Generation controls the lake’s water level, including an annual winter drawdown and spring refill. The shoreline combines cottages and permanent residences with forested and wetland areas, and municipal planning documents identify approximately 400 private water and sewage systems serving the Eugenia Lake community (Harrison et al., 2025; Ontario Power Generation, n.d.; Municipality of Grey Highlands, 2024).

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Reading the shoreline

Lake Shape & Shoreline Character

Eugenia Lake has a broad, irregular reservoir shape with islands, projecting shorelines and several shallow bays. Much of the lake is shallow, while its deepest basin lies near the hydroelectric works (Harrison et al., 2025; Natural Resources Canada, 2021).

Its indented shoreline creates sheltered cottage areas around a more open central body of water. Because the lake averages only about 4.9 ft deep, water depth and seasonal water-level changes can be important considerations for boating (Harrison et al., 2025; Ontario Power Generation, n.d.).

Things to Do

Eugenia Lake supports boating, fishing, paddling and swimming, with the main municipal lake access located off Canrobert Street. Nearby Eugenia Falls Conservation Area adds a very different experience, with trails and views of the 30-metre waterfall where the Beaver River drops over the Niagara Escarpment (Municipality of Grey Highlands, n.d.-a; Grey Sauble Conservation Authority, n.d.).

Boating

The public boat launch off Canrobert Street is the only municipal public access point to Eugenia Lake; other shoreline access points are private. The lake functions as a managed hydroelectric reservoir rather than a through-navigation waterway, and Ontario Power Generation controls seasonal water levels through winter drawdown and spring refill operations (Municipality of Grey Highlands, n.d.-a; Ontario Power Generation, n.d.).

Fishing

Eugenia Lake supports fish from warm-, cool- and cold-water communities. Records reviewed for a municipal environmental study identified 20 species, including smallmouth and largemouth bass, northern pike, rainbow trout, brook trout and brown trout. This mix reflects the contrast between the lake’s extensive shallow areas and its smaller deep-water basin (Hutchinson Environmental Sciences Ltd., 2024).

Swimming

Eugenia Lake’s municipal public beach is located beside the boat launch off Canrobert Street. Grey Highlands conducts regular recreational-water testing during the summer and posts current results online. Blue-green algae blooms have also been documented, so swimmers should always follow current municipal advisories and avoid visible blooms (Municipality of Grey Highlands, n.d.-a, n.d.-b).

Nearby Communities

Eugenia, Flesherton and Kimberley

The community of Eugenia lies immediately west of the lake, while Flesherton is located to the south and serves as a nearby service community. Kimberley lies north in the Beaver Valley, within the same broader Grey Highlands landscape (Municipality of Grey Highlands, 2024).

Sources & References

Grey Sauble Conservation Authority. (2024). *Eugenia Falls Conservation Area management plan*.

Harrison, J. W., Heitman, G. C., & Parsons, B. M. (2025). Hypolimnetic photosynthesis precedes a Microcystis bloom in a temperate, oligo-mesotrophic, naturalized reservoir. *Lake and Reservoir Management*. Advance online publication.

Hutchinson Environmental Sciences Ltd. (2024). *105 Hawthorn Lane scoped environmental impact study*.

Municipality of Grey Highlands. (2022). *Comprehensive zoning by-law 2004-50: Office consolidation*.

Municipality of Grey Highlands. (2024). *Eugenia, Eugenia Lake and Beaver Valley community information sheet*.

Municipality of Grey Highlands. (n.d.-a). *Lakes*.

Municipality of Grey Highlands. (n.d.-b). *Parks, lakes, and trails*.

Natural Resources Canada. (2021, February 16). *Eugenia Lake*. *Canadian Geographical Names Database*.

Ontario Power Generation. (n.d.). *Water management*.

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Artwork and keepsakes inspired by the distinctive outline of Eugenia Lake.

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Eugenia Lake framed map featuring the lake outline

Eugenia Lake Map - Framed poster

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An Eugenia Lake framed map featuring its distinctive outline in a clean, finished design. Ready-to-display lake wall art for the cottage, home or a meaningful gift.

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