Good management of stormwater runoff from worksites is important to prevent contamination of waterways or groundwater. This page discusses stormwater runoff from industrial or trade sites. See the earthworks page for information on the stormwater management requirements for development or building sites. Best practice Plan your site carefully.
Construct drains or slope your site so that rainfall runoff doesn’t cross your working areas. This keeps uncontaminated water separate from waste water,
Good management of stormwater runoff from worksites is important to prevent contamination of waterways or groundwater. This page discusses stormwater runoff from industrial or trade sites. See the earthworks page for information on the stormwater management requirements for development or building sites. Best practice Plan your site carefully.
Construct drains or slope your site so that rainfall runoff doesn’t cross your working areas. This keeps uncontaminated water separate from waste water,
4.2.2 Flows 28
4.2.3 Discharge Volume 30
4.2.4 Timing of Peak 31
4.2.5 Summary 32
5 CONCLUSIONS AND RECOMMENDATIONS 34
LIST OF FIGURES
Figure 2-1 Waitōtara Catchment 6
Figure 3-1 Waitōtara Gauge Summary Map 9
Figure 3-2 Cumulative Hourly Rainfall Depths at Gauges – June 2015 10
Figure 3-3 Gauge Data for Hydraulic Model Calibration – June 2015 11
Figure 3-4 Tidal Boundary Conditions – June 2015 11
Figure 3-5 Cumulative Hourly Rainfall Depths at Gauges –
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December 2020 Year to Date Rainfall
millimetres
0-500
501-1000
1001-1500
1501-2000
2001-2500
2501-3000
3001-3500
3501-4000
4001-4500
4501-5000
5001-5500
5501-6000
6001-6500
2020 rainfall (January-December) - monitored sites
2020 rainfall (January-December) distribution
Taranaki’s temperature trends. Sunshine hours and wind speeds in North Taranaki have increased, while winter rainfall has decreased and severe weather events have become fewer and less intense. South Taranaki has seen an increase in spring rainfall. The Committee was told that the Resource Management Act explicitly excludes the Council from climate change regulation, but future likely consequences, particularly for rainfall, are being factored into plans and projects, most notably the recent upgrades to