Järviwiki: Finnish Lake Observations (SYKE)
Citizen-science and authority-maintained wiki holding basic information on every Finnish lake over 1 ha plus user-contributed observations of water level, water temperature, ice conditions and algal blooms, all available as open data with time-series graphs.
jarviwiki.fi
At a glance
- Region
- Finland (Europe)
- Coverage
- Finland
- Access
- Free
- Category
- Government
- Last updated
- 2026
What's inside
- lake water level
- ice phenology
- water temperature
What you can do with it
Typical work that data of this type supports.
- 01
Storage tracking
Follow storage and releases through the season.
Because it has: lake water level
- 02
Change over time
See how lakes and wetlands have grown or shrunk.
- 03
Risk screening
Screen projects and assets for climate risk.
Because it has: water temperature
Where AI adds value
Ideas for machine learning and AI agents built on this kind of data.
- 01
Storage from space
Estimate volume from satellite water area and altimetry.
- 02
Release decisions
Optimise releases against inflow forecasts.
- 03
Bias correction
Correct and downscale climate model output for a site.
Related water data
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- Bathymetry and Hydrology of an Emerging Periglacial Lagoon, Svalbard (Mendeley Data)Europe | Free
- BfG German Federal Waterways Data (PEGELONLINE)Europe | Free
- BODC / National Oceanography Centre Linked Systems ERDDAPEurope | Free
- Bulgaria NIMH Hydrological DataEurope | Free
- CAMELS-FI: Hydrometeorological Time Series and Landscape Properties for 320 Finnish CatchmentsEurope | Free
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