The city and the Yukon government continue to work on implementing an effective stormwater management system in Whistle Bend, the city said today on its website.

The primary function of the pond is to collect and store stormwater from Whistle Bend. It’s the first stage of the overall system that will include outfall infrastructure as more people make Whistle Bend home.

The statement said algae growth in stormwater ponds is normal but managing the nutrient (phosphorus and nitrogen) loads, which result in algae production, is an important part of ensuring a healthy aquatic ecosystem.

The government is leading the development of the overall stormwater management plan while the city is responsible for the system’s operation.

The government is exploring both short- and long-term methods to reduce, treat and manage nutrient loading at the pond.

Water samples are being taken to characterize nutrient concentrations – data that will contribute to determining future strategies, which may include one or more of the following:

• reduce nutrients entering the pond;

• adding structures to inhibit algae growth;

• enhanced aeration; and/or

• additional riparian vegetation. 

The city has taken a number of measures to reduce or remove algae from the pond, including:

• adding dye to the water to reduce heat and light absorption, which promote algae growth;

• applying Algaecide to the water;

• physically removing algae from the shoreline; 

• planting aquatic vegetation to help stabilize the shoreline and provide nutrient uptake; and

• operating and repairing the existing aeration system, water fountain and intake screen, which has been overwhelmed by algae growth.

“We thank Whistle Bend residents for their patience, as we develop an understanding of the nutrient loads and sources and determine the best set of solutions for the short and long term.”