This study, analyzing the sustainable use of fisheries in Lake Marmara, was conducted in Golmarmara, a town of Manisa. The study makes use of contingent valuation method to calculate the monetary values which fishers who are actively using the lake are willing to pay in order for a sustainable use of the lake. For this purpose, data were collected through face-to-face interviews made with 55 of the 130 commercial fishers active in the lake. Variables affecting fishers' acceptance of extra payment were found to be: knowing the lake is a natural protection zone, education, experience in fishing, income, vessel ownership and retirement status. Of the 55 fishers interviewed, 96% (53 fishers) believe that the lake is under a threat in terms of fisheries while 50 fishers (90%) are willing to pay for the sustainability and improvement of the fisheries in the lake (18,681 TRY ($6,912) in total per year). The calculated willingness to pay (WTP) per fisher averages 143.7 TRY per year. With this study, fishers have proven that they will take on responsibility in creating the required data and budget to establish a sustainable fisheries management and prepare management plans.