Lakes / Rhode Island / Providence County / Stillwater Reservoir
Stillwater Reservoir, Rhode Island
240 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Rhode Island
41.91 degrees N, 71.55 degrees W - Providence County. State and county outlines drawn from Census boundary data; the lake marker is placed by its USGS National Hydrography Dataset coordinates, not by eye. Schematic - not a survey map.
How Stillwater Reservoir Stacks Up
- Larger than 85% of the 121 lakes counted in Rhode Island.
- About 9 miles from Providence, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Stillwater Pond | Providence | 0.8 mi | 25 acres |
| Curran Lower Reservoir | Providence | 1.1 mi | 60 acres |
| Sprague Lower Reservoir | Providence | 1.3 mi | 25 acres |
| Georgiaville Pond | Providence | 2.0 mi | 96 acres |
| Waterman Reservoir | Providence | 2.8 mi | 261 acres |
| Slack Reservoir | Providence | 3.2 mi | 137 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Stillwater Reservoir
How Big Is Stillwater Reservoir?
Stillwater Reservoir covers 240 acres in Providence County, Rhode Island.
What Is the Largest Lake in Providence County?
Scituate Reservoir is the largest lake in Providence County, at 2,340 acres.
Largest Lakes in Rhode Island
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Scituate Reservoir | Providence | 2,340 acres | - |
| 2 | Worden Pond | Washington | 1,097 acres | - |
| 3 | Flat River Reservoir | Kent | 593 acres | - |
| 4 | Watchaug Pond | Washington | 574 acres | - |
| 5 | Winnapaug Pond | Washington | 476 acres | - |
All 121 Rhode Island lakes ranked by surface area
Sources: USGS NHD (The National Map NHD MapServer layer 12) named waterbodies FTYPE 390/436; counties via Census point-in-polygon lake data (ID 127687737). Verified October 30, 2026.