Disclaimer & Safety Notice

Nature of LakeRadar scores

LakeRadar calculates 0–100 activity ratings for fishing, boating, sailing, paddling, and swimming. These numbers are automated heuristics generated by algorithmic weighting of recent weather forecasts, wind measurements, and hydrological sensor readings.

They do not constitute a safety clearance, recreational certification, or formal guarantee. Conditions on inland lakes and reservoirs can evolve rapidly due to localized thermal winds, topographic funneling, sudden convective squalls, dam releases, and changing underwater obstructions that sensors cannot detect.

Government sources and official authority

All raw weather, wind, and alert data on LakeRadar are ingested from the National Oceanic and Atmospheric Administration (NOAA) National Weather Service (NWS). Hydrological records (water surface elevation, gauge height, and streamflow) originate from the U.S. Geological Survey (USGS) National Water Information System, with select reservoirs sourced from operating authorities (including the U.S. Army Corps of Engineers, Bureau of Reclamation, and Tennessee Valley Authority).

LakeRadar is an independent platform and is not affiliated with, endorsed by, or operated by any federal, state, or municipal government agency. If information on this website diverges from warnings issued by the National Weather Service, local emergency managers, or the on-site park ranger, the official authority is always correct.

Sensor lag, outages, and data limitations

Public hydrological and meteorological sensors are subject to equipment downtime, telemetry delays, seasonal recalibration, and mechanical fouling. While LakeRadar runs scheduled ingestion workers and flags data that has fallen behind its expected freshness window, we cannot guarantee uninterrupted real-time accuracy:

• Gauge Outages: A USGS gauge may freeze, undergo scheduled servicing, or sustain storm damage, causing water levels to report stale figures or show no current reading.
• Forecast Resolution: High-Resolution Rapid Refresh (HRRR) and Global Forecast System (GFS) numerical models reflect regional grid cells (3 km to 13 km) and may not capture microclimates on narrow coves or protected shorelines.
• Estimated Storage: Percent-full reservoir storage values are mathematical approximations derived from published elevation-capacity curves. They represent indicative estimates, not official bathymetric surveys.

Skipper and recreator personal responsibility

Everyone who visits a lake is solely responsible for their own safety and the safety of their passengers or companions. Before launching any vessel or entering the water, always:

1. Inspect the water and shoreline with your own eyes for squalls, whitecaps, debris, or sudden changes in current.
2. Check posted notices and ramp closures directly at the launch facility or state park office.
3. Wear an approved, properly fitted Personal Flotation Device (PFD / life jacket).
4. File a float plan with someone reliable on land detailing your launch point, itinerary, and expected return time.
5. Carry functional safety equipment, including sound-producing devices, lights, and marine VHF radio or reliable cellular communication.

Limitation of liability

LakeRadar and its operators provide this platform on an “as is” and “as available” basis without warranties of any kind, whether express, implied, statutory, or otherwise. Under no circumstances shall LakeRadar be liable for any direct, indirect, incidental, special, or consequential damages resulting from reliance on the data, scores, or maps presented on this website.

Related resources

For detailed explanations of our scoring formulas and freshness windows, review our Methodology. For agency licensing details, see our Data Sources Registry. For answers to frequently asked questions, visit our FAQ.