📊 Week 6: Rainfall Graph Analysis - Waikato Region

Unit 10: Kai, Culture and Climate — Surviving Scarcity
Analyze rainfall data for the Waikato region and connect it to food production and scarcity.

🔢 Numeracy Integration: This activity uses data analysis, graph reading, and statistical thinking. It connects to Mathematics Level 4: Statistics and Probability.

📈 Graph 1: Annual Rainfall - Waikato Region

Draw or paste a rainfall graph here
Source: NIWA Annual Climate Summary 2024

[Graph Space]
Label: X-axis (Years), Y-axis (Rainfall in mm), Title, Data points

2024 Data from NIWA:

  • Dargaville (Northland): Driest year on record
  • Whitianga (Coromandel): Driest year on record
  • Bay of Plenty & Coromandel: Below normal (50-79% of annual normal)
  • Waikato region: Check NIWA data for specific locations

Source: NIWA Annual Climate Summary 2024

📊 2024 Climate Data from NIWA

Key Findings from NIWA Annual Climate Summary 2024:

  • 2024 was New Zealand's 10th-warmest year on record (0.51°C above average)
  • Dargaville and Whitianga: Driest year on record
  • Lumsden (Southland): Wettest year since records began (1982)
  • Drought conditions: Northland, Taranaki, Manawatū-Whanganui, Wairarapa, Wellington, Marlborough, Tasman, and Nelson
  • Four state of emergency declarations: Westland (Jan & Nov), Wairoa (June), Dunedin & Clutha (October)

Source: NIWA Annual Climate Summary 2024

1. Basic Observations

What is the average annual rainfall for the Waikato region? (Research from NIWA data)


According to NIWA 2024 data, was rainfall above, below, or near normal for your region?


Is there a trend? (Is rainfall increasing, decreasing, or staying the same over time?)


2. Patterns & Extremes (Using 2024 Data)

2024 had extreme events. Which regions had very high rainfall (flood risk)?


Which regions had very low rainfall (drought risk) in 2024?


How do these extremes connect to food production and scarcity?


3. Connection to Food

How does high rainfall (flooding) affect food production in the Waikato?



How does low rainfall (drought) affect food production?



What does this mean for food scarcity?



📈 Graph 2: 2024 Monthly Rainfall Anomalies - Aotearoa New Zealand

NIWA 2024 Monthly Rainfall Anomalies Map
Source: NIWA Annual Climate Summary 2024

2024 Monthly Rainfall Anomalies for New Zealand showing below normal (brown), normal (beige), and above normal (teal) rainfall patterns across 12 months

Legend: Brown/Orange = Below normal • Beige = Normal • Teal/Blue = Above normal

📊 Analysis Questions:

  • Which months had the most widespread below normal rainfall? What regions were affected?
  • Which months had above normal rainfall? Where did this occur?
  • What pattern do you notice between the North Island and South Island?
  • How does this connect to the state of emergency declarations (Westland, Wairoa, Dunedin & Clutha)?

[Space for your analysis notes]
Record your observations about the monthly patterns

🤔 Final Analysis: Connecting 2024 Data to Food Scarcity

Based on NIWA's 2024 Annual Climate Summary and your graph analysis, answer:

  1. 2024 had both extreme droughts AND floods. How did this affect food production?
    Think about: Dargaville (driest year), Lumsden (wettest year), state of emergency declarations


  2. NIWA reports that 8 of New Zealand's 10 warmest years have occurred since 2013. What does this trend mean for food production and scarcity in the future?


  3. How does the 2024 data connect to our unit's Big Question: "What Will We Eat Tomorrow?"
    Consider: What happens to food when there's too much rain? Too little? How do farmers adapt?


💡 Extension:
  • Compare your region's 2024 data with other regions (e.g., Dargaville vs. Lumsden)
  • Research how the 2024 drought affected specific crops or farms in your area
  • Investigate how farmers adapted to the extreme weather in 2024
  • Download the full NIWA Annual Climate Summary 2024 PDF for more detailed data