The Behler See is a lake in the Holstein Switzerland region of North Germany. It lies between Timmdorf (municipality of Malente

Malente

This Article is about a German location. For the DJ with the same name, see Malente .Malente is a municipality in the district of Ostholstein, in Schleswig-Holstein, Germany. It is about 5 km northwest of Eutin and 35 km north of Lübeck....

) to the east and the town of Plön

Plön

Plön is the district seat of the Plön district in Schleswig-Holstein, Germany, and has about 13,000 inhabitants. It lies right on the shores of Schleswig-Holstein's biggest lake, the Great Plön Lake, as well as on several smaller lakes, touching the town on virtually all sides...

 to the west. To the east it transitions into the Langensee

Langensee (Holstein)

The Langensee is a lake in the North German lakeland region of Holstein Switzerland.It lies on the River Schwentine between the lakes of Dieksee and Behler See . It covers an area of , is up to 8 metres deep and lies at a height of ....

, to the west into the Höftsee

Höftsee

The Höftsee is a lake in the Holstein Switzerland in North Germany.It lies on the River Schwentine east of the town of Plön between the Behler See and the Großer Plöner See.It has an area of about , is up to 16 metres deep and lies about ....

.

All these lakes are crossed from east to west by the River Schwentine.
The Behler See is named after the village of Behl in the municipality of Grebin

Grebin

Grebin is a municipality in the district of Plön, in Schleswig-Holstein, Germany....

, which lies to the north.

It has an area of 277 hectares (684.5 acre), is up to 43 metres deep and its surface elevation is about .