Lakes / Oregon / Clackamas County
Lakes in Clackamas County, Oregon
11 lakes counted in Clackamas County - the largest is Timothy Lake at 1,400 acres.
11
Lakes Counted
1,400 acres
Largest - Timothy Lake
Clackamas County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Timothy Lake | Clackamas | 1,400 acres | - |
| 2 | Bull Run Reservoir Number Two | Clackamas | 460 acres | - |
| 3 | Bull Run Lake | Clackamas | 444 acres | - |
| 4 | Lake Oswego | Clackamas | 432 acres | - |
| 5 | North Fork Reservoir | Clackamas | 218 acres | - |
| 6 | Estacada Lake | Clackamas | 60 acres | - |
| 7 | Trillium Lake | Clackamas | 58 acres | - |
| 8 | Deardorff Reservoir | Clackamas | 57 acres | - |
| 9 | Mompano Reservoir | Clackamas | 52 acres | - |
| 10 | Faraday Lake | Clackamas | 48 acres | - |
| 11 | North Fork Reservoir | Clackamas | 44 acres | - |
Sources: USGS National Hydrography Dataset lake data; USGS. Verified October 30, 2026.