Na is a natural thermal spring in Oregon, described in the USGS inventory as warm but without an exact temperature on record. Location and safety notes are below.

This listing comes from the USGS/NOAA thermal-springs inventory (a reference dataset compiled from records dating to the 1960s–1980s). It does not include ownership, developed-vs-primitive status, or access rights. Many U.S. thermal springs sit on private, tribal, or protected land, or are undeveloped and unsafe — always verify legal access and current conditions with the land manager before visiting, and follow Leave No Trace.