Wetlands Scientist Salary. Wetlands Scientist average salary is $42,740, median salary is $- with a salary range from $39,200 to $46,280. Wetlands Scientist salaries are collected from government agencies and companies.Each salary is associated with a real job position.etlands Scientist salary is full-time annual starting salary. Intern, contractor and hourly pay scale vary from regular exempt employee. Compensation depends on work experience, job location, bonus, benefits and other factors.