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How to Calculate Infiltration Rate
How to Calculate Infiltration Rate. Occurring only if open space is present in the soil, infiltration is the process by which gravity and capillary action pull water into the soil. Typical units for infiltration rates are inches per hour or millimeters per hour. Ease of entry, storage capacity, transmission rate and current moisture levels affect...
Occurring only if open space is present in the soil, infiltration is the process by which gravity and capillary action pull water into the soil. Typical units for infiltration rates are inches per hour or millimeters per hour. Ease of entry, storage capacity, transmission rate and current moisture levels affect the infiltration rate. By calculating infiltration rates, you can design drainage systems to minimize flooding and stagnant water, thereby reducing the risk that mosquitoes will breed in stagnant pools or rotting plant roots.
Things You'll Need
Rule
Timer
Fork (optional)
Dig a hole that is at least 30 centimeters deep with your hands or a fork. Take care not to compact the sides while digging.
Fill the hole with water and wait for it to drain completely.
Fill the hole with water and use a ruler to measure the depth of water in the hole immediately after filling in millimeters, centimeters or inches.
Measure the depth of the water remaining in the hole after 15 minutes in millimeters, centimeters or inches.
Multiple by the number 2 the difference in the initial depth of water in the hole and the depth after 30 minutes to obtain the infiltration rate in millimeters, centimeters or inches per hour.
