No site in New York's access file falls on Cornell Creek, so the way in is public ground and road crossings rather than a marked landing. 1 block of public land touches the river, which is where you can stand without asking — 102 acres between them, counting each unit whole rather than the part beside the water.
Ownership from PAD-US as the state publishes it. Where a block has its own page, the name links to it. "Restricted access" and "access unrecorded" are PAD-US's own words for the block, and neither one means open — check before you park.
Cornell Creek — live water temperature, regulations and access