The average supervisor salary at Avenal was $189,106 , which is 45 percent higher than the average salary for this job in California, and 108 percent higher than the national average for this job . Supervisor salaries at Avenal typically range from $166,770 to $211,443 (25th to 75th percentile). The highest reported supervisor salary was $211,442. There are 2 employees at Avenal with the job title supervisor.