There are a couple different ways! One is to check this site: https://www.fs.usda.gov/working-with-us/careers, alongside your state’s conservation site for any positions. The other one, and I cannot stress this enough especially if you are still in college is to contact the internship department. They often will be able to place you, or can send you the correct information for your area. If all that fails, talk to the environmental department in your school and see if they have any ideas