| Date of Status Change | Record Sequence | Active or Inactive | Primary Source | PWS Type | Population | PWS Name | 
| Current Status 04/04/2022 | 4 | A | GW | NC | 100 | ODF NEHALEM FALLS CG | 
| 04/04/2022 | 3 | A | GW | NP | 10 | ODF NEHALEM FALLS CG | 
| 07/18/2014 | 2 | A | GW | NC | 35 | ODF NEHALEM FALLS CG | 
| 08/14/2008 | 1 | A | GW | NC | 50 | ODF NEHALEM FALLS CG | 
| Population Type | Avg Daily Population | Start Month | Start Day | End Month | End Day | Effective Begin Date | Effective End Date | 
| Transient | 100 | 1 | 1 | 12 | 31 | 04/04/2022 | |
| Transient | 10 | 1 | 1 | 12 | 31 | 11/10/2015 | 04/03/2022 | 
| Transient | 10 | 5 | 15 | 9 | 30 | 05/08/2014 | 11/09/2015 | 
| Transient | 35 | 5 | 8 | 10 | 8 | 06/19/2008 | 05/08/2014 | 
| Transient | 50 | 6 | 1 | 10 | 31 | 08/26/1997 | 06/18/2008 |