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LakeQuality
B

Taylor Lake Inlet_1 Water Quality Trend

Cook County, Minnesota · 20202025 · 5 years of data

Taylor Lake Inlet_1 water quality has been stable over the 5-year window from 2020–2025, based on EPA Water Quality Portal samples. The lake holds an overall Grade B today.

Water Clarity (Secchi)

Declining
3.2 m-99.0 m20212025
20212025-10.22 m/yr

Phosphorus

Improving
22.0 µg/L5.3 µg/L20202024
20202024-2.19 µg/L/yr

Chlorophyll-a

Stable
3.5 µg/L2.0 µg/L20202024
20202024-0.03 µg/L/yr

How to read this

  • Clarity (Secchi depth): deeper visibility is better. An upward line means the water is getting clearer.
  • Phosphorus & Chlorophyll-a: lower is better. A downward line means fewer nutrients fueling algae growth.
  • Year-to-year variability is normal. Weather, sample timing, and short-window data all add noise. Look at direction, not single-year jumps.

Methodology

Each metric is calculated from EPA Water Quality Portal samples. Annual values are the median of all samples taken that year. The trend direction comes from a linear regression of those annual medians; we classify it as improving, declining, or stable when the change-per-year is below 2% of the long-run mean. The current cache spans roughly 20202025, which is a short window for climate-scale claims. Use this page to spot direction and as a launch point — link out to the EPA WQP for the raw record before citing as evidence.