The Tjärnesjöns Fiskevårdsområdesförening (Tjärnesjön Fishing Area Association) consists of all fishing rights holders in Tjärnesjön. It has its origins in the Kärnesjöns Fiskevårdsförening (Kärnesjön Fishing Area Association), which was formed in 1933. The association sells fishing licenses, rents out boats and carries out fisheries management in the lake.