Water quality trend update — 20 January 2026
Our citizen scientists have been tracking water quality across East and West Lake since mid-2025. Here’s what six months of monthly monitoring is showing us.
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The threat of excess phosphorus in our lakes
When phosphorus levels rise too high, freshwater bodies like Perry Lakes become vulnerable to toxic blue-green algal blooms.
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Water quality update — July 2025
The main threat to water quality at Perry Lakes is toxic algae. Here’s where things stand as of July 2025.
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Perry Lakes: highest water levels in 50 years
Both East and West Lakes are thriving, with water levels now the highest they’ve been since the 1970s.
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Azolla at West Lake
West Lake is becoming increasingly covered by the floating water fern Azolla pinnata — and it’s growing fast.
