Lakes across the country are struggling with harmful algal blooms, low oxygen, and declining fish populations. While these problems are often obvious at the surface, many management practices are based on misconceptions that don’t address the real causes. Instead of solving the issue, they often make lakes even sicker. Chemical Treatments: A
In 2023, invasive quagga mussels were discovered in the Snake River near Twin Falls, Idaho. To stop the spread, officials carried out a large-scale chemical treatment using copper-based products. Two years later, the results show just how much damage these treatments can cause—and how little success they’ve had in eliminating the mussels. Chemical Treatments: Lethal
A closer look at how Eurasian milfoil and chemical treatments are harming aquatic life Flint Lake on Valparaiso’s north side is in trouble. Invasive aquatic weeds, especially Eurasian milfoil, have become so overgrown that they’re even interfering with fish population surveys. During a recent Department of Natural Resources (DNR) survey, biologists had to stop two



