What is significant? The Emerald Lake Park cultural landscape, early twentieth century and 1940s-50s plantings, the picturesque lake, rustic rubble stone and log shelters, remnant evidence of earlier structures, for its historic association with CA Nobelius and continuing association with the CA Nobelius Gembrook Nursery. Emerald Lake Park is also significant as a group of related places, with a strong relationship with the former nursery's packing shed and siding, the Gembrook Narrow Gauge Railway Line and Lakeside Station.
How is it significant? Emerald Lake Park is of historic and aesthetic significance to the Melbourne metropolitan region and possibly the State.
Why is it significant? Emerald Lake Park is of significance to the Melbourne metropolitan region and possibly the State as an excellent example of ornamental public recreation area planting largely from the 1940s-50s, set in a native forest context and surrounding a picturesque lake, with associated rustic rubble stone and log shelters typical of this era and earlier (RNE Criteria A.4, B.1, F.1); for the rarity and uncommon formation of individual mainly conifer specimens within the park as well as the superior conifer grouping on the hillside overlooking the lake and lakeside car park (RNE B.2, F.1); for its historic association with CA Nobelius (RNE H.1), and continuing association with the CA Nobelius Gembrook Nursery, as the site of the nursery's display garden and later the flax field and processing works, and close to the Nobelius Heritage Park, the former nursery's packing shed and siding (RNE A.4); and for its strategic relationship with the Gembrook Narrow Gauge Railway Line and Lakeside Station (1944-), as both a tourist and goods link with Melbourne (RNE A.4). (Last Paragraph a direct quote by Context Pty Ltd 2007 from Graeme Butler & Associates 1998 Heritage Study)