Hasselfors byalag

Lillbjörken, Toften, Testen and Teen are connected in the Norrström and Eskilstunaån catchment area, which begins in the west around the areas above Lake Ölen outside Ölsboda, and in the east around the Laxsjöarna and Borasjön.

Toften: Area 18.19 km², maximum depth of approximately 19 m. Toften is currently dominated by the pike perch population when it comes to predatory fish. Perch and pike occur as other important predatory fish. Whitefish such as roach, bream, rudd, roach, rudd, bream and rudd are also found in the lake.

The test: Area: 0.63 km², maximum depth: approx. 2–2.5 m. Locally dominant species are perch, pike and whitefish.

Teen: Area: 6 km², maximum depth: Approximately 3.5 m. Dominant fish species are pike and perch. Adjacent stationary trout stocks are found in the area.

Lillbjörken: Area: approx. 0.5 km², maximum depth: approx. 4.5 meters. The lake mainly holds species such as pike and perch.