Header Side Menu Content Footer
Government of Manitoba
Agriculture
Get Started
Stay Connected
to Manitoba Agriculture

Stay Connected
to the Manitoba Government

To view PDF files, you must have a copy of the Adobe Acrobat Reader which is available as a free download:

Get Adobe Reader

Manitoba Fall Soil Moisture Survey

The amount of moisture within the root zone just prior to freeze-up provides a good indication of what can be expected in the spring.  With snow cover and freezing temperatures, soil moisture content remains relatively stable throughout the winter.  This is especially true in frozen moist soils whose pores become “sealed off”.  During the last week of October and the first week of November 2014, Manitoba Agriculture, Food and Rural Development collected soil samples from 105 sites across Agro-Manitoba. 

Each sampling site was chosen based on the soil properties that best represent each area and the most common cropping system in the region.  Soil samples were taken with a soil auger at five depths throughout the root zone: 0-15 cm, 15-30 cm, 30-60 cm, 60-90 cm, and 90-120 cm.  Samples were placed immediately in sealed containers and subsequently weighed, oven dried, and re-weighed to determine their gravimetric moisture content (mass of moisture in mass of dry soil).

Each soil sample was classified based on its similarities to well-characterized soils around Manitoba.  This enabled us to assign a bulk density, wilting point, field capacity, and available water holding capacity value (plant available water) to each depth from each sampling site.  From there, soil moisture by weight was converted to percent soil moisture by volume.  The available water and soil moisture as a percent of available water holding capacity were calculated and are shown on the maps.

Soil Moisture Survey Results

Amount of Available Soil Moisture

2016 2015 2014 2013 2012 2011 2009 2008 2007 2006 2005 2004
Available Moisture – mm of Water in the Root Zone (0 to 120cm) view view view view view view view view view view view view
Available Moisture – mm of Water in the Top Zone (0 to 30cm) view view view view view view   view view view view view
Available Moisture – mm of Water in the Sub Zone (30 to 120cm) view view view view view view   view view view view view
Percent Available Soil Moisture                
Percent of Available Water Holding Capacity in the Root Zone (0 to 120cm) view view view view view view view view view view view view
Percent of Available Water Holding Capacity in the Top Zone (0 to 30cm) view view view view view view   view view view view view
Percent of Available Water Holding Capacity in the Sub Zone (30 to 120cm) view view view view view view   view view view view view

Please note, there was no survey conducted in 2010 .


Bookmark and Share