maple_ridge_township,_alpena_county,_michigan | ispartof | united_states <tsp> alpena_county_regional_airport | location | maple_ridge_township,_alpena_county,_michigan <sep> maple ridge township is a civil township of alpena county in the us state of michigan the population was 1,690 at the 2010 census 
alpena county regional airport is located in the united states in the maple ridge township. alpena county. michigan.maple ridge township alpena county michigan is a civil township