This issue includes:

• Editor’s Introduction
• From the President
• What is an Extreme event? John Hayes and Ray Boyton
  • What is an extreme event? Appendices (download separately)
• The Importance of Hydrological Data during an Extreme Event. Mark Wolf
• Korokoro Flood Warning Project. Ethan Coulston
• From The Vault – The Birth of the Australasian Hydrographer