| Date of Status Change | Active or Inactive | Primary Source | PWS Type | Population | PWS Name | 
| Current Status 07/27/2022 | A | GW | NC | 30 | YAMHILL CO PKS-ED GRENFELL PK | 
| 01/12/2005 | A | GW | NC | 30 | YAMHILL CO.PKS-ED GRENFELL PK. | 
| Population Type | Avg Daily Population | Start Month | Start Day | End Month | End Day | Effective Begin Date | Effective End Date | 
| Transient | 30 | 4 | 1 | 9 | 30 | 06/06/2017 | |
| Transient | 30 | 5 | 1 | 9 | 30 | First Record | 06/05/2017 |