Geographic Spread Map
Interactive map showing the spread of ash dieback across Irish counties from first detection in 2012 to present day.
About This Map
This interactive map visualizes the geographic spread of ash dieback disease across Ireland's 26 counties.
How to use: Select a year to see the disease progression. Click on any county marker for detailed information.
Marker size and color indicate infection severity, from gray (not detected) to red (high severity).
Key Findings
• First detected in Leitrim (2012)
• Spread to all 26 counties by 2016
• Current average severity: ~75%
• Wind-dispersed spores enable rapid spread