Wairoa at Irvines

Flow for last 7 days at Wairoa at Irvines

Flow for last 7 days at Wairoa at Irvines
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Note

All times are in NZ Standard Time, during Daylight Saving add one hour.

Flow for last 30 days at Wairoa at Irvines

Flow for last 30 days at Wairoa at Irvines

River Flow History

Catchment size: 462 km2

Period of analysis: 11 November 1957 to 30 April 2016.

Comment: The flow at the location Wairoa at Irvines was traditionally measured by a flow recorder located just below the confluence of the Wairoa and Lee rivers.  This recorder has been replaced by individual recorders on the Wairoa, Lee and Roding Rivers.  The flow currently published as “Wairoa at Irvines” is the sum of the three upstream tributaries, and is considered by Council to be a continuation of the original flow site.

  Flood Flows Drought Flow
Return Period  (m3/s)  1 day average 7 day average
 Annual 711.2 2.025 2.193
 5 Year 921.9 1.571 1.681
 10 Year 1065.8 1.417 1.506
 20 Year 1193.8 1.303 1.378
 50 Year 1345.9 1.188 1.249
 100 Year 1450.7 1.118 1.169
 Extreme Recorded 1466.3  25/01/1986 1.197  03/03/1973 1.292 28/02/1973
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Disclaimer

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.