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The Lake Elsinore and San Jacinto Watershed Authority (LESJWA) was formed to improve water quality in Lake Elsinore and Canyon Lake. This organization is made up of stakeholders from around the watershed who are implementing programs such as the alum treatments to Canyon Lake. Many of these programs are grant funded and are a result of numerous lake studies.
In a balanced ecosystem, most algae are necessary to keep a body of water healthy and productive. However, excessive algae growth reduces water clarity, releases a strong odor, and suffocates aquatic life forms by depleting oxygen levels and blocking sunlight.
Refrain from going into water that is foamy, scummy, pea-green, blue-green, brownish red, or looks like floating paint.
In some situations, where lake waters are particularly stagnant and shallow as evident around lake coves, algae growth may still occur despite repeated alum treatment. Usually the algae mats in the coves will dissipate over time and drop away within 2-3 weeks.
Yes, together we can all help reduce nutrient inputs to the lake by picking up after our animals, reducing runoff from our irrigation, reducing fertilizer use, and avoid littering in our streets. All of these practices reduce the amount of pollutants that end up in Canyon Lake, which can lead to algae growth.
Canyon Lake is a drinking water reservoir that EVMWD seasonally utilizes to offset costly imported water. After proper treatment, algae does not have any negative health impacts, but can add an earthy taste to drinking water.
In recent years, algae testing has been conducted at Canyon Lake by the Southern California Coastal Water Research Project (SCCWRP) and LESJWA. These tests are not required by State or Federal law and are used for research purposes to help improve water quality.