Catchment size: 479 km2
Period of analysis: 01 April 1981 to 31 December 2019.
Comment: This site is principally for flood warning. Drought analysis is from 1986.
| Flood Flows | Drought Flow | ||
|---|---|---|---|
| Return Period | (m3/s) | 1 day average | 7 day average |
| Annual | 534 | 4.135 | 4.423 |
| 5 Year | 694 | 3.299 | 3.497 |
| 10 Year | 825 | 3.015 | 3.182 |
| 20 Year | 950 | 2.806 | 2.951 |
| 50 Year | 1112 | 2.594 | 2.716 |
| 100 Year | |||
| Extreme Recorded |
1056.5 05/10/1988 |
2.411 05/03/2019 |
2.520 01/03/2019 |
Note about crossing the Dart Ford river by vehicle
If you want to cross the Dart Ford river in your car, the general rule of thumb is that conditions are often suitable when the river flow at Wangapeka at Walters Peak is less than 40 cumecs (m3/s).
This does not mean you should cross the ford when you arrive at that location however. At times the flow shown on the website can be inaccurate, or the Dart River may be flowing higher than the Wangapeka indicates, or the culverts under the ford may be choked with gravel.
Always re-assess the flow conditions across the ford once you arrive there, without being guided by the Wangapeka flow, and take a particularly conservative approach. Also view the predicted weather conditions to consider whether the ford will be passable on your return.
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.
