| Pirie–Torrens corridor | |
| Pushpin Map: | Australia South Australia |
| Subdivision Type1: | Country |
| Subdivision Name1: | Australia |
| Subdivision Type2: | State |
| Subdivision Name2: | South Australia |
| Subdivision Type3: | Region |
| Subdivision Name3: | Far North |
| Length: | 59km (37miles) |
| Discharge1 Location: | Port Augusta |
| Discharge1 Avg: | 0.5m3/s |
| Source1: | Lake Torrens |
| Source1 Coordinates: | -31.941°N 137.771°W |
| Source1 Elevation: | 30m (100feet) |
| Mouth: | Spencer Gulf |
| Mouth Location: | Emeroo |
| Mouth Coordinates: | -32.4043°N 137.7545°W |
| Mouth Elevation: | 0m (00feet) |
| Tributaries Right: | Sandy Creek |
The Pirie–Torrens corridor is an approximately 59km (37miles) long intermittent watercourse that serves as the only natural outlet of Lake Torrens, a large normally endorheic salt lake in central South Australia.
Only on two recorded occasions — in 1836, and again in March 1989 — has Lake Torrens filled high enough to flow out through the corridor to its outlet at the head of the Spencer Gulf.[1] [2] The corridor likely flowed in 1897.[3]