Versatile Soil Moisture Budget

The Versatile Soil Moisture Budget (VSMB) is a soil water budget model that is continuous and deterministic in nature and was developed by AAFC. It is based on the premise that the water available for plant growth is gained by precipitation or irrigation, and lost through evapotranspiration and runoff as well as lateral and deep drainage. The daily net loss or gain is added or subtracted from the water already present in the rooting zone. Water is withdrawn simultaneously, but at different rates, from different soil depths, depending on the potential evapotranspiration, the stage of crop development, the water release characteristics of each soil layer and the available water.

Data and Resources

Additional Info

Field	Value
Last Updated	April 17, 2026, 22:06 (UTC)
Created	April 17, 2026, 22:06 (UTC)
contact_email	agri-geomatics-agrog@agr.gc.ca
contact_person	{"en": "Government of Canada; Agriculture and Agri-Food Canada; Science and Technology Branch,agri-geomatics-agrog@agr.gc.ca", "fr": "Gouvernement du Canada; Agriculture et Agroalimentaire Canada; Direction générale de la science et de la technologie,agri-geomatics-agrog@agr.gc.ca"}
criticality_level	[]
data_dictionary	EPSG:3857,http://www.epsg.org/,8.3.4
geographic_scope	[]
open_canada_collection	fgp
open_canada_date_published	2017-05-05 00:00:00
open_canada_keywords	{"en": ["Soil Moisture", "Crops", "Agriculture", "Farmlands", "Precipitation", "Temperature"], "fr": ["humidité du sol", "Cultures", "Agriculture", "Terre agricole", "Précipitation", "Température"]}
open_canada_subject	["nature_and_environment", "science_and_technology"]
sensitivity_level	unrestricted
title_fr	Modèle adaptatif du bilan hydrique des sols
update_frequency	as_needed