In this case the regional district of Campbell River is serving as the umbrella organization and the overall administration for a variety of community groups which have joined together to submit a comprehensive plan to improve the habitat for chinook, coho and steelhead in the Campbell River area.
Campbell River is located in Florida.
Nothing in the text specifies what state it's in, or if it's even in the USA, therefore we don't know without using external knowledge. I'm not sure why this was difficult honestly.
( z1 be-located-at :ARG1 ( z2 city :name ( z3 name :op "Campbell" :op "River" ) ) :ARG2 ( z4 state :name ( z5 name :op "Florida" ) ) )