The MapBiomas Water – Peru Initiative (Collection 4) aims to map the dynamics of surface water, glaciers, and snow cover across the entire country for the period 1985–2025.

METHODOLOGY FOR SURFACE WATER MAPPING

Unlike MapBiomas Land Cover and Land Use, surface water mapping is produced at a monthly time scale. The following products are available on the platform:

• Annual Surface Water
• Monthly Surface Water
• Water Body Types
• Monthly Trends
• Annual Transitions
• Annual and Monthly Frequency
• Duration of Persistence
• Last Occurrence

If you wish to consult the complete MapBiomas Water methodology, the ATBD (Algorithm Theoretical Basis Document) is available at this LINK

METHODOLOGY FOR GLACIER AND SNOW MAPPING

Glacier mapping is produced annually for the period 1985–2025 and corresponds to the same information presented in the MapBiomas Land Cover and Land Use maps. Snow cover mapping is also produced annually, covering the period 2000–2025.

The following products are available on the platform:

• Annual Extent (Glacier and Snow Cover)
• Frequency (Glacier and Snow Cover)
• Transitions (Glacier and Snow Cover)
• Persistence Duration (Snow Cover only)
• Last Occurrence (Glacier and Snow Cover)
• Area Loss by Period (Glaciers only)
• Glaciers and Glacial Lakes (Glaciers only)

To learn more about the complete glacier mapping methodology, please refer to the ATBD available at this LINK

To learn more about the complete snow cover mapping methodology, please refer to the ATBD available at this LINK