Catchment size: 61 km2
Period of analysis: January 1987 to July 2025.
Comment:
No drought flow analysis provided due to unreliability of drought flow data prior to 2006.
From 2006 supplementary flows for the Wai-iti catchment are provided from the Kainui Dam. As low flows are modfied by dam releases regular river statistics do not apply and only mean and extreme values are appropriate.
| Flood Flows | Drought Flow | ||
|---|---|---|---|
| Return Period | (m3/s) | 1 day average | 7 day average |
| Annual | 47 | 0.139 | 0.153 |
| 5 Year | 63 | ||
| 10 Year | 78 | ||
| 20 Year | 95 | ||
| 50 Year | 118 | ||
| 100 Year | |||
| Extreme Recorded |
130.5 11/07/2025 |
0.098 02/02/2021 |
0.111 28/01/2021 |
Tasman District Council has exercised all reasonable skill and care in collecting and displaying this information. However, the data is provisional, and may be incorrect until checked by staff. Data should be used with caution where there are safety, monetary, or operational consequences if the data is incorrect. Note also, the data may be changed at a later time.
