Flow Thresholds Below Jindabyne
River scientists are currently undertaking studies to determine the flow thresholds for a range of riverine processes. Some preliminary flow thresholds that have been developed include:
| Discharge ML/day | River process |
|---|---|
| ~300 | Initial wetting of lower benches- old riverbed (Dalgety uplands) |
| 850 - 1,000 | Breakdown of thermal stratification (Jindabyne gorge) |
| 1,000 | Movement of fine silt from riverbed and initiating movement in unconsolidated coarse sands up to about 1.9 mm |
| 1,000 - 3,000 | Shear stress velocities across riffles are substantially greater than in pools (riffle maintenance) |
| 10,370 | Passage for Adult Australian Bass (Pinch Falls) |
| 13,350 | Passage for Juvenile Australian Bass (Pinch Falls) |
Further defining of ecological flow thresholds is currently in progress via modelling, field based studies, and flow trials. See Snowy Flow Response Monitoring and Modelling.
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