El Dorado County: lake and river algae advisories

21 waters in El Dorado County appear in the state's harmful algal bloom records. Waters whose latest record is an advisory come first.

Waters in El Dorado County and what the state's latest record says
Water	Latest record
Big Meadow Creek	Caution advisory, last posted Jul 16, 2021. No all-clear recorded.
Cat Creek	Algal mat alert sign, last posted Jun 4, 2024. No all-clear recorded.
General Creek	Algal mat alert sign, last posted Sep 3, 2026. No all-clear recorded.
Heavenly Valley Creek	Algal mat alert sign, last posted Sep 5, 2025. No all-clear recorded.
Lake Baron	Caution advisory, last posted Dec 13, 2021. No all-clear recorded.
Lake Tahoe	Caution advisory, last posted Oct 7, 2026. No all-clear recorded.
Silver Fork American River	Caution advisory, last posted Nov 1, 2021. No all-clear recorded.
Star Lake	Caution advisory, last posted Aug 31, 2020. No all-clear recorded.
Tahoe Keys Lagoon	Warning advisory, last posted Aug 21, 2026. No all-clear recorded.
Taylor Creek	Algal mat general awareness sign, last posted Jul 30, 2025. No all-clear recorded.
Trout Creek	Caution advisory, last posted Jul 31, 2026. No all-clear recorded.
Upper Truckee River	Caution advisory, last posted Aug 7, 2026. No all-clear recorded.
Big Silver Creek	The state's latest record, from Aug 18, 2025, recommends no advisory.
Cascade Creek	The state's latest record, from Aug 4, 2022, recommends no advisory.
Folsom Lake	Reports on file, with no advisory level the state has classified.
Grass Lake Creek	Reports on file, with no advisory level the state has classified.
Meeks Creek	The state's latest record, from Sep 16, 2026, recommends no advisory.
Round Lake	The state's latest record, from Nov 3, 2020, recommends no advisory.
Sly Park Creek	The state's latest record, from Aug 21, 2026, recommends no advisory.
Tallac Creek	The state's latest record, from Jul 25, 2024, recommends no advisory.
Wrights Lake	The state's latest record, from Jul 9, 2018, recommends no advisory.