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Collins at Drop Structure

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Flow for last 7 days at Collins at Drop Structure (NCC)

Flow for last 7 days at Collins at Drop Structure (NCC)
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Note

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

Flow for last 30 days at Collins at Drop Structure (NCC)

Flow for last 30 days at Collins at Drop Structure (NCC)

River flow history

Catchment size: 17.6 km2

Period of analysis: 29 September 1960 to 01 July 2023.

Comment:  This is a Nelson City Council site consisting of a large concrete bed and channel structure.  Analysis is for full period of record apart from period between 1994 and 1999 when site was not operational.

  Flood Flows Drought Flow
Return Period  (m3/s)  1 day average 7 day average
 Annual 31.2 0.056 0.064
 5 Year 41.8 0.043 0.047
 10 Year 54.4 0.038 0.042
 20 Year 68.5 0.035 0.037
 50 Year 90.2 0.031 0.033
 100 Year 109.3 0.029 0.031
 Extreme Recorded

123.4

05/02/2022

0.030

01/05/2001

0.031

28/04/2001

 

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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.