Since September, harmful algal blooms (HABs) have been observed in both Upper Saranac Lake and Fish Creek Ponds. Although these blooms have been low-density and short-lived, they have spread widely across our waters. HABs occur when algae experience rapid growth, negatively impacting water quality and aquatic life. Some HABs produce bacteria that release toxins harmful to people, animals, and the environment. Persistent blooms are particularly concerning for regions like Upper Saranac Lake, which rely on water-based tourism.
This year’s blooms formed as the lake began to undergo seasonal mixing, bringing nutrient-rich water from the bottom to the surface. Additionally, calm winds, warm temperatures, and high solar radiation contributed to the conditions favorable for HAB development.
One of the most common questions the Upper Saranac Foundation receives during these outbreaks is: What can we do to stop them? Unfortunately, there is no immediate solution to stop a bloom once it starts. The best course of action is to recognize HABs, avoid affected areas, and report them as soon as possible. However, we can work to reduce the likelihood of future blooms by better understanding their root causes.
The exact causes of HABs are complex and often the result of multiple factors. We know that climate change plays a significant role, as rising temperatures and changes in precipitation patterns create conditions that promote algal growth. We also know that nutrients drive algal growth, and that excessive phosphorus and nitrogen is a cause of HABs. The Foundation’s watershed management efforts are focused on reducing these nutrient inputs through education and advocacy.
When we look at improving our water quality, we need to look at what’s happening on the land and take land-based actions. Preventative measures such as properly managing septic systems, reducing or eliminating lawn fertilizer use, and improving stormwater management can help decrease the likelihood of HABs.
By taking proactive steps to reduce nutrient pollution from land-based sources, we can help protect the health of the Upper Saranac Lake watershed and mitigate the risk of harmful algal blooms in the future.
For more information on HABs visit the Upper Saranac Foundation web page by clicking here.
More HABs photos from Upper Saranac Lake and Fish Creek Pond:
