m
m
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<table class="sortable"><tr>
 
<table class="sortable"><tr>
 
<th>Soil</th>
 
<th>Soil</th>
<th>Porosity (volume/volume)</th>
+
<th>Porosity <sup>2</sup> (volume/volume)</th>
 
<th>Field capacity (volume/volume)</th>
 
<th>Field capacity (volume/volume)</th>
 
<th>Wilting point (volume/volume)</th>
 
<th>Wilting point (volume/volume)</th>
<th>Porosity minus field capacity (volume/volume)<sup>2</sup></th>
+
<th>Porosity minus field capacity (volume/volume)<sup>3</sup></th>
<th>Field capacity minus wilting point (volume/volume)<sup>3</sup></th>
+
<th>Field capacity minus wilting point (volume/volume)<sup>4</sup></th>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
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</table>
 
</table>
 
<font size=1><sup>1</sup>Sources of information include [[References for trees|Saxton and Rawls]] (2006), [http://nrcca.cals.cornell.edu/soil/CA2/CA0212.1-3.php Cornell University], [http://passel.unl.edu/pages/informationmodule.php?idinformationmodule=1130447039&topicorder=10&maxto=10 USDA-NIFA], [http://stormwater.pca.state.mn.us/index.php/File:Available_water_capacity.png Minnesota Stormwater Manual]<br>
 
<font size=1><sup>1</sup>Sources of information include [[References for trees|Saxton and Rawls]] (2006), [http://nrcca.cals.cornell.edu/soil/CA2/CA0212.1-3.php Cornell University], [http://passel.unl.edu/pages/informationmodule.php?idinformationmodule=1130447039&topicorder=10&maxto=10 USDA-NIFA], [http://stormwater.pca.state.mn.us/index.php/File:Available_water_capacity.png Minnesota Stormwater Manual]<br>
<sup>2</sup>This value may be used to represent the volume of water that will drain from a bioretention media.<br>
+
<sup>2</sup>Soil saturation is assumed to be equal to the porosity.<br>
<sup>3</sup>This value may be used to estimate the amount of water available for evapotranspiration
+
<sup>3</sup>This value may be used to represent the volume of water that will drain from a bioretention media.<br>
 +
<sup>4</sup>This value may be used to estimate the amount of water available for evapotranspiration
 
</font size>
 
</font size>
  

Revision as of 15:08, 16 January 2014

Recommended values for porosity, field capacity and wilting point for different soils.1
Link to this table.

Soil Porosity 2 (volume/volume) Field capacity (volume/volume) Wilting point (volume/volume) Porosity minus field capacity (volume/volume)3 Field capacity minus wilting point (volume/volume)4
Sand 0.43 0.17 0.025 to 0.09 0.26 0.11
Loamy sand 0.44 0.09 0.04 0.35 0.05
Sandy loam 0.45 0.14 0.05 0.31 0.09
Loam 0.47 0.25 to 0.32 0.09 to 0.15 0.19 0.06
Silt loam 0.50 0.28 0.11 0.22 0.17
Sandy clay loam 0.4 0.07
Clay loam 0.46 0.32 0.15 0.14 0.17
Silty clay loam 0.47 to 0.51 0.30 to 0.37 0.17 to 0.22 0.16 0.14
Sandy clay 0.43 0.11
Silty clay 0.47 0.05
Clay 0.47 0.32 0.20 0.15 0.12

1Sources of information include Saxton and Rawls (2006), Cornell University, USDA-NIFA, Minnesota Stormwater Manual
2Soil saturation is assumed to be equal to the porosity.
3This value may be used to represent the volume of water that will drain from a bioretention media.
4This value may be used to estimate the amount of water available for evapotranspiration