The following is the entry for this language as it appeared in the 14th edition (2000).
It was superseded by the corresponding entry in the 15th edition (2005). See also the corresponding entry in the current edition of Ethnologue.
SIL code: ACH
ISO 639-2: nai
| Population | 10 speakers out of 800 in the ethnic group (1982 SIL), The 1990 census reports 81 speakers. |
| Region | Northeastern California. |
| Alternate names | ACHOMAWI, PITT RIVER |
| Classification | Hokan, Northern, Karok-Shasta, Shasta-Palaihninan, Palaihninan. |
| Comments | Originally there were nine dialects. All are elderly. Nearly extinct. |
