Here’s how the notice was worded:

American shad:
American shad may only be harvested from the Connecticut River system, the southern boundary of which is a line extending between Griswold Point in Old Lyme and the outer light on the Old Saybrook breakwater. American shad fishing in all other waters is limited to catch and release only;

We are interpreting that as including the CT river tributaries such as the Farmington river (same population).