When you first join TU, you are assigned to a local chapter based on your zip code. All chapters have specific geographic regions based on zip code boundaries. The only exception to this chapter assignment rule is if you were recruited by a local chapter and mailed in a new membership application form, or join online via the chapter recruitment page that prompted you with a drop-down list to select the chapter you would like.
Join Trout Unlimited by clicking here. The main Trout Unlimited Become a Member page will open in a new window.
Click on this link. The trout unlimited membership renewal page from the main TU.org site will open in a new window. Fill out the information as requested. When prompted for a chapter number, the Lewis and Clark Chapter number is 656.