| Date of Status Change | Record Sequence | Active or Inactive | Primary Source | PWS Type | Population | PWS Name | 
| Current Status 10/05/2016 | 6 | A | GW | NC | 25 | PGE TIMOTHY LAKE LODGE | 
| 10/05/2016 | 5 | A | GW | NC | 25 | PGE TIMOTHY LAKE (OAK GROVE) | 
| 08/28/2015 | 4 | A | GW | NC | 35 | PGE TIMOTHY LAKE (OAK GROVE) | 
| 12/01/2010 | 3 | A | GW | NC | 200 | PGE TIMOTHY LAKE (OAK GROVE) | 
| 12/18/2001 | 2 | A | GW | NP | 200 | PGE TIMOTHY LAKE (OAK GROVE) | 
| 12/18/2001 | 1 | A | NP | 200 | PGE TIMOTHY LAKE (OAK GROVE) | 
| Population Type | Avg Daily Population | Start Month | Start Day | End Month | End Day | Effective Begin Date | Effective End Date | 
| Transient | 25 | 5 | 1 | 9 | 30 | 06/12/2015 | |
| Transient | 35 | 5 | 1 | 9 | 30 | 06/28/2010 | 06/11/2015 | 
| Transient | 200 | 5 | 1 | 9 | 30 | First Record | 06/27/2010 |