[en] This work highlights the effort made to clean up Wabamun Lake after it underwent an oil spill. It provides informative guidelines on how the impact was evaluated using the Shoreline Cleanup Assessment Technique (SCAT), and gives recommendations on the different processes involved in the cleanup. After the impacted area had been identified, the lake shoreline was divided into 7 major types and 191 segments. These segments were later examined separately to collect data on shoreline physical properties and oil contamination levels. The collected data were then used to determine which regions should have priority in the treatment process. The impacted regions were then categorized into three areas of priority, depending on the oiling levels and sensitivity of the shoreline segment. The treatment processes were followed by a post-treatment assessment phase, to evaluate the effectiveness of the treatment. Post-treatment assessment revealed that 25 segments did not meet the treatment standards and needed further cleanup.