Stanley Park’s Beaver Lake is an important part of its ecology and a popular recreational site.
However, it is becoming overrun with silt, leaving the lake’s water levels low and depleted due to clearcut logging, the introduction of invasive species such as fragrant lilies, and the construction of the Stanley Park causeway in 1938 among other trails and roads.
The lake had shrunk from an area of 6.7 hectares in 1938 to 3.9 hectares in 1997 with more than 70 percent of its surface currently covered by water lilies and other plants.

The lake provides a habitat for several at risk species in British Columbia, including coastal cutthroat trout, blue dasher dragonflies, and great blue herons.

In January 2011, the Stanley Park Ecological Action Plan was created and one of the main issues that needed to be addressed was the state of Beaver Lake.
A part of that action called for the dredging of the lake in order to restore it as there was the threat that it would fill in completely by 2020 without intervention.
It was last dredged in 1929.
The planning for the enhancing of Beaver Lake is underway with open houses held by consultants AquaTerra Environmental that have already taken place to discuss its future with the public.
Currently, no action plans have been made other than being made part of the Vancouver Park Board 2012-2014 Capital Plan.
Stanley Park’s Beaver Lake is an important part of its ecology and a popular recreational site. However, it is becoming overrun with silt, leaving the lake’s water levels low and depleted due to clearcut logging, the introduction of invasive species such as fragrant lilies, and the construction of the Stanley Park causeway in 1938 among other trails and roads. The lake had shrunk from an area of 6.7 hectares in 1938 to 3.9 hectares in 1997 with more than 70 percent of its surface currently covered by water lilies and other plants. 
The lake provides a habitat for several at risk species in British Columbia, including coastal cutthroat trout, blue dasher dragonflies, and great blue herons.
In January 2011, the Stanley Park Ecological Action Plan was created and one of the main issues that needed to be addressed was the state of Beaver Lake. A part of that action called for the dredging of the lake in order to restore it as there was the threat that it would fill in completely by 2020 without intervention. It was last dredged in 1929. The planning for the enhancing of Beaver Lake is underway with open houses held by consultants AquaTerra Environmental that have already taken place to discuss its future with the public. Currently, no action plans have been made other than being made part of the Vancouver Park Board 2012-2014 Capital Plan.
Stanley Park Ecology Society