Greater Wellington monitors rainfall, river flows and groundwater levels at more than 100 sites across the Wellington region. Every month we summarise the information collected to give a general picture of recent trends. For recent monthly summaries you can click on the following links:

• July 2008 Summary
• June 2008 Summary
• May 2008 Summary
• April 2008 Summary
• March 2008 Summary
• February 2008 Summary
• January 2008 Summary

We also produce annual reports on hydrology. The most recent annual hydrology report and annual groundwater report are for the period 2006/07.