The capacity of an aquifer to transmit water. It is dependent on the water-transmitting characteristics of the saturated formation (hydraulic conductivity) and the saturated thickness. For example, sand and gravel formations typically have greater hydraulic conductivities than sandstone formations. The sand and gravel will have a greater transmissivity if both formations are the same thickness.

the rate at which water passes through an aquifer.

A measure of the capability of the entire thickness of an aquifer to transmit water. Also known as coefficient of transmissivity.

The rate at which groundwater can flow through an aquifer section of unit width under a unit hydraulic gradient. It is the average permeability of a section of the entire aquifer at a given location multiplied by the thickness of the formation.

The rate at which water is transmitted through the total thickness of an aquifer under a unity hydraulic gradient.

The rate at which water at the prevailing kinematic viscosity is transmitted through a unit width of the aquifer under a unit hydraulic gradient.

A description of the capacity of an aquifer to transmit water. Equals the product of the aquifer thickness and the hydraulic conductivity.

This is the rate at which water is transmitted through a unit width of aquifer under a unit hydraulic gradient. It is a function of the permeability and thickness of the aquifer, and is used to judge its production potential.

A measure of the rate at which water will move through an aquifer. Transmissivity incorporates the hydraulic conductivity of the aquifer, aquifer thickness, water temperature and fluid properties to describe water movement.

The product of hydraulic conductivity and aquifer thickness; a measure of a volume of water to move through an aquifer. Transmissivity generally has the units of ft2/day or gallons per day/foot. Transmissivity is a measure of the subsurface's ability to transmit groundwater horizontally through its entire saturated thickness and affects the potential yield of wells.

The rate at which water is transmitted through an aquifer under a particular hydraulic gradient. It is a function of the permeability and thickness of an aquifer and is used to judge an aquifer's production potential.

The capacity of an aquifer to transmit water of the prevailing kinematic viscosity. T = Kb, where b = the saturated thickness of the aquifer. Dimensions are gpd/ft, or ft2/day.

The rate at which water is transmitted through a unit width of a groundwater aquifer or confining bed under a unit hydraulic gradient.

the rate of flow of water through a vertical strip of aquifer which is one unit wide and which extends the full saturated depth of the aquifer.

a property of an aquifer which defines the rate at which water moves through it.

The fractional quantity of incident radiation transmitted by matter.

A measure of the ability of a geotextile to transmit fluids within its plane.

Flow capacity of an aquifer measured in volume per unit time per unit width. Equal to the product of hydraulic conductivity times the saturated thickness of the aquifer.

Transmittance for a unit thickness sample. One may further qualify it as spectral transmissivity.

The ability of an aquifer to transmit water

1. Often the ratio of any transmitted to incident irradiance. See also transmission coefficient. 2. (Also called transmissibility.) Measure of aquifer permeability, defined as the volume of water passing through a vertical surface of unit width per unit head gradient across the surface.