| South Cascade Lake | |
|---|---|
  South Cascade Lake  South Cascade Lake | |
| Location | Skagit County, Washington |
| Coordinates | 48°22′16″N 121°04′04″W / 48.37111°N 121.06778°W |
| Primary inflows | South Cascade Glacier |
| Primary outflows | South Fork Cascade River |
| Basin countries | United States |
| Surface elevation | 5,297 ft (1,615 m) |
| Islands | none |
South Cascade Lake is a glacial lake in Washington. It is the source of the South Fork Cascade River. It is fed directly by the meltwater of the South Cascade Glacier.