Degree of saturationof soil and water content difference
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Water content is the ratio of water weight to solids weight per unit volume. Therefore, the water content depends on the volume of voids in the sample and on the solids specific gravity. There is no single answer to your question.
The volume of water that can be stored in a unit volume of soil cannot exceed the porosity of a unit volume of soil. In practice, the volume of water in the soil sample will be less than the porosity of the soil because some air will always be present in the sample voids.
To determine the water content of a particular soil, you will have to either use average values (from tables or soil maps) to make the estimate or will need to collect a standard sample of the soil from the site and run a laboratory test to determine the parameters.
There is probably a field instrument that can be used to estimate the water content of a soil without a laboratory test. But the best estimate will come from a laboratory test.
The volume of water that can be stored in a unit volume of soil cannot exceed the porosity of a unit volume of soil. In practice, the volume of water in the soil sample will be less than the porosity of the soil because some air will always be present in the sample voids.
To determine the water content of a particular soil, you will have to either use average values (from tables or soil maps) to make the estimate or will need to collect a standard sample of the soil from the site and run a laboratory test to determine the parameters.
There is probably a field instrument that can be used to estimate the water content of a soil without a laboratory test. But the best estimate will come from a laboratory test.
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