Elsinore Valley Municipal Water District (EVMWD) is alerting Canyon Lake residents of the lake’s natural seasonal turnover, a process that may cause temporary changes in water color, cloudiness, or an earthy, musty, or rotten egg odor in the coming days. “These effects are a normal part of the seasonal turnover and do not pose any health risks to the community,” EVMWD said.
EVMWD observed signs of turnover during its recent weekly water quality testing.
Lake turnover is a natural occurrence that typically happens twice a year in temperate climates, including in Canyon Lake. It occurs when the lake’s surface water cools, becomes denser, and sinks, causing the lake to mix from top to bottom. This seasonal shift circulates nutrients and redistributes oxygen but may temporarily stir up sediment and release natural odors.
“We understand that changes in water appearance or scent can be concerning, but these effects are natural and short-lived, typically lasting one to two weeks,” EVMWD said.
For more information, contact EVMWD at 951-674-3146.












