Alpine Lake Monitor brings modeled lake temperatures, forecasts and scientific lake information to your watch. Free to download and use. No payment, subscription, trial period or unlock code is required.
Important: the main temperature is modeled
The temperature on the main screen and glance is a Simstrat model estimate at approximately 1 m depth. It is calculated from weather inputs such as air temperature, wind, sunlight (solar radiation), humidity and precipitation, depending on the lake and model configuration. It is not a live thermometer reading. Actual water temperature at your location or near the shore can differ from the model estimate.
Temperature and trends
View modeled temperature history and forecast. The glance shows the lake name and a wide graph, with the current-time marker in the centre and one temperature value. Yellow shows modeled history; blue shows forecast. The glance uses an equal time scale on either side of the current-time marker. Missing forecast data is not invented or extended.
Find your lake
Find the nearest modeled lake or choose from an alphabetical list. If a fresh position is unavailable, the app uses the last known position saved on the watch. Save favorites and select the lake displayed in your glance: nearest, selected or a fixed lake.
More lake information
Browse lake properties, station-measured water temperature, water level, satellite turbidity, clarity, water colour and other available source metrics. Station measurements are separate from the main modeled temperature. Availability varies by lake and source. Satellite skin-temperature pages are not included. Sample times and explanatory metric details help identify what each value represents.
Languages
English, German, French and Italian. Lake names, menus and metric explanations follow your selected language where the source supplies translations.
Controls
UP and DOWN: browse metric pages.
START, MENU or tap: open lake selection and settings.
BACK: return.
Select Metric details in the menu for the full explanation.
Data and connectivity
An internet connection is needed to download new data. Cached readings remain available offline. Background refresh is requested hourly, subject to Garmin scheduling and connectivity; this does not mean that the scientific model is recalculated every hour. Alplakes model outputs are normally updated daily. Unavailable values are shown as dashes. Old glance readings are muted and prefixed with ~.
Data sources and attribution
Alplakes and Eawag: https://www.alplakes.eawag.ch/
Alplakes-produced data is provided under CC BY 4.0: https://creativecommons.org/licenses/by/4.0/
Data is selected, rounded and plotted for the watch display. In-situ data remains subject to the licence terms of the original providers. Model and source information: https://www.alplakes.eawag.ch/models
Independent, unofficial application. Not affiliated with, endorsed by or sponsored by the Alplakes project, Eawag or Garmin.
Font
Open Sans. Copyright 2020 The Open Sans Project Authors. Licensed under the SIL Open Font License 1.1.
Support
mihail@stacanov.email
