NOEMA survey of CO(1–0) emission from IC 342. The distribution of the CO(1–0) peak intensity at the native angular resolution (top left) and the intensity-weighted mean CO velocity at 90 pc resolution (top right) as revealed by our new CO survey. The images show spiral arms, abundant inter-arm emission, and a velocity field that mostly reflects a regularly rotating gas disk. The bottom panels show the molecular gas traced by CO in the context of atomic gas and stars. In these panels, the CO and H I data are shown at a common ∼350 pc resolution. The bottom left panel shows a map of the total neutral gas surface density adding molecular gas surface density to atomic gas surface density from Chiang et al. (2021). The white ellipses show 1, 2, 3 × R_e and the gray dashed ellipse indicates 1 R₂₅. The lower right panel shows the azimuthally averaged mass surface density profiles for atomic gas, molecular gas, and stellar mass estimated from the near-infrared. The stellar mass distribution using HST imaging is consistent with a nuclear star cluster and an exponential disk (Carson et al. 2015), while the presented profile suffers from the resolution of the WISE data. Our NOEMA survey covers the inner molecule-dominated region where the H I emission is depressed, including the CO-bright center.