Lake search

Search any Finnish lake over one hectare: area, surveyed depth and a direct link to the map with the depth layers switched on. The data is the Finnish Environment Institute's Lake Register.

Content checked on 27.7.2026. Rules, permits and prices change: see the official sources linked below for current information.

Type the lake or municipality name — at least three characters. The names in the register are Finnish.

The index loads once you start typing.

Where the data comes from

The search covers every Finnish lake over one hectare from the Finnish Environment Institute's (SYKE) Lake Register: name, location, area and — for about 5,500 lakes — surveyed mean and maximum depth. The smallest ponds have no depth data at all: not every water has been surveyed.

The "To the map" link opens the spot on the map with the depth layers already switched on. Depth coverage varies from lake to lake.

Source: Finnish Environment Institute (SYKE), Lake Register, licence CC BY 4.0. Retrieved programmatically from SYKE's open interface.

Before you head out

The right to fish with a single rod without a permit (public fishing right) applies almost everywhere, but for spinning and other gear anyone aged 18 to 69 needs the state fisheries fee (eraluvat.fi), and many waters require a local permit on top of that.

Check the current bans and restrictions for a specific water at kalastusrajoitus.fi. Restrictions change during the year and vary by region.

Sources

The data comes from official sources. The links lead to the original material.

Finnish Environment Institute (SYKE): Lake Register (CC BY 4.0). All lakes over one hectare.
Depth contours on the map: SYKE depth data (CC BY 4.0), coverage varies by lake.
State fisheries fee: Eraluvat.fi, Metsähallitus.
Current fishing restrictions: Kalastusrajoitus.fi.