How Lake Pulse works
Lake Pulse reports measurements. It does not score, rate, rank or forecast lakes or properties.
Measured, estimated, modeled
- Measured
- A lab result, sensor reading or field reading, dated and tied to a location.
- Estimated
- A relative signal from satellite imagery or in-water fluorescence sensors. Useful for patterns and timing, not a concentration.
- Modeled
- A value calculated from measurements or from stated assumptions (for example, a scenario range). Assumptions are always published.
What we don't do
- No lake scores or grades.
- No rankings or named comparisons between lakes.
- No forecasts.
- No property ratings.
- No Lake Pulse data on real estate listings.
- No insurer use without the lake's opt-in.
Methods are public
Every product links to its methods page — lab or instrument, method, detection and reporting limits, what the value can and can't tell you, and version. Never behind a paywall. Where source details are missing, the methods page says so.
Browse the Toolbox →Corrections
See something wrong? Request a correction.Corrections add a new version with a note; nothing is silently deleted.

