Data & Resources
Description
Subsurface runoff represents the flow of water moving laterally through the surface layers of the soil. Data are available monthly from 2000 to 2026, with a spatial resolution of 11,132 meters. These data have been aggregated by Fokontany and by Communes to quantify the volume of water expressed in height-equivalents (meters), as if water were uniformly distributed over the administrative surface. An additional aggregation was also performed at the level of the 500-meter buffer zones around the IHOPE survey villages, providing village-level monthly estimates for each site.
Columns
fid
numeric id of commune or fokontany
cluster
geographic grouping of villages defined for the IHOPE survey sampling design
objectid
numeric id of village
date
date in format: YYYY-MM corresponding to year and month
new_commune
commune name after 2019
old_commune
commune name before 2019
comm_fkt
name of fokontany using standardized ‘new_commune’_’fokontany’ nomenclature
mean_subrunoff
average of subsurface runoff
units
unit in Meterfid : numeric id of commune or fokontany
cluster
geographic grouping of villages defined for the IHOPE survey sampling design
objectid
numeric id of village
date
date in format: YYYY-MM
corresponding to year and month
new_commune
commune name after 2019
old_commune
commune name before 2019
comm_fkt
name of fokontany using standardized ‘new_commune’_’fokontany’ nomenclature
mean_subrunoff
average of subsurface runoff
units
unit in Meter
Source Links
Additional Info
✍️ Author
🔧 Maintainer
🗓 Last Updated
March 16, 2026
🔹 Processing Steps
data aggregation using the spatial average of the polygon in each administrative zone