Case Study: Algae and Vegetation Control in Denver Lake
Keeping your lakes, ponds and fisheries ecologically balanced and looking beautiful isn’t a one-time job. It requires consistent care by highly trained lake management professionals. If you wait until a problem reveals itself to take action, chances are you’ll always be playing catch-up, which is why SOLitude believes in proactive management plans to help keep water quality issues from occurring.
Location: Denver, CO
This lake is located in Denver, CO. This park contains the Denver Zoo and the Denver Museum of Science and Nature. The 23.5-acre lake has a history of recurring filamentous algae blooms, often so notable they get the attention of the local news and media publications. SOLitude Lake Management was hired by the City of Denver in the late summer of 2016 to help create a treatment plan focusing on algae control and nutrient remediation.
Scope of Work:
In August 2016, the restoration program on this property started with filamentous algae and vegetation treatments. Due to concerns with a reduction in dissolved oxygen from the significant decaying algae and vegetation and the high-profile location, the algae treatment program was structured to occur in three separate applications.
The first treatment occurred in mid-August. Approximately seven days later, another application was performed. Significant control was achieved after these two applications so only a minor follow-up application in early September was completed for the third treatment. The project included a Phoslock application to be done after algae treatments to bind additional free reactive phosphorus released from the treatments.
The project concluded at the end of September. Water quality tests collected demonstrated that the Total Phosphorus was reduced by almost 75 % and the Free Reactive Phosphorus was reduced by almost 85% after Phoslock application. Denver City Parks representatives were very pleased with the results and relayed that they would like to complete additional applications to maintain the current improvements seen at this lake as well as other resources within other City of Denver parks.