Lakes / Rhode Island / Kent County / Flat River Reservoir
Flat River Reservoir, Rhode Island
593 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Rhode Island
41.70 degrees N, 71.62 degrees W - Kent 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 Flat River Reservoir Stacks Up
- Ranks #3 for surface area among the Rhode Island lakes counted so far - 593 acres.
- The largest lake in Kent County among those counted.
- About 10 miles from Warwick, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Coventry Reservoir | Kent | 1.3 mi | 170 acres |
| Reynolds Pond | Kent | 2.8 mi | 32 acres |
| Lake Mishnock | Kent | 3.3 mi | 47 acres |
| Quidnick Reservoir | Kent | 3.4 mi | 172 acres |
| Tiogue Lake | Kent | 3.7 mi | 225 acres |
| Scituate Reservoir | Providence | 5.2 mi | 2,340 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Flat River Reservoir
How Big Is Flat River Reservoir?
Flat River Reservoir covers 593 acres in Kent County, Rhode Island.
What Is the Largest Lake in Kent County?
Flat River Reservoir is the largest lake in Kent County, at 593 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 127685872). Verified October 30, 2026.