Term No. | Term Name/Term Description | Action |
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685 |
Geohydrology, Hydrogeology or Groundwater hydrology | The branch of hydrology that deals with groundwater, its occurrence and movements and its replenishment and depletion; the properties of rocks that control groundwater movement and storage and the methods of investigation and utilization of groundwater...... | | Similar Terms |
858 |
Groundwater runoff | That part of the runoff which has passed into the ground, becomes groundwater, and is discharged into a stream channel as spring or percolation water (illustrated)...... | | Similar Terms |
974 |
| Similar Terms |
975 |
Groundwater province | An area characterized by a general similarity in the mode of occurrence of groundwater. | | Similar Terms |
977 |
Groundwater | The subsurface water that occurs in the zone of saturation. | | Similar Terms |
988 |
| Similar Terms |
996 |
| Similar Terms |
997 |
| Similar Terms |
998 |
| Similar Terms |
999 |
Perched water, or Perched groundwater | Groundwater of a limited aquifer embedded in different depths but lower than Verkhovodka, on small impermeable or relatively impermeable lenses...... | | Similar Terms |
1000 |
Semiperched groundwater | Groundwater that has a greater pressure head than an underlying body of groundwater, from which it is not separated by any unsaturated rock...... | | Similar Terms |
1001 |
Fixed groundwater | Water held in saturated material with interstices so small that it is permanently attached to the pore walls or moves so slowly that it is usually not available as a source of water for pumping...... | | Similar Terms |
1005 |
Attached groundwater | That portion of groundwater adhering to the pore walls. It is assumed to be equal in amount to the residual water left after drainage and is measured by specific retention...... | | Similar Terms |
1019 |
Groundwater flow | 1 - Flow in an aquifer. 2 - That portion of the discharge of a stream which is derived entirely from groundwater, through spring or seepage water. Groundwater flow usually forms the major part of the base flow...... | | Similar Terms |
1025 |
Groundwater reservoir | 1 - A reservoir in which groundwater is stored. The water may enter in the reservoir natural means (seepage, infiltration, etc.) or by the action of men (injection wells, spreading etc.) 2 - Aquifer...... | | Similar Terms |
1031 |
Groundwater artery | A more or less tubular body of permeable or impermeable material saturated with water that is under artesian pressure. | | Similar Terms |
1032 |
Groundwater divide | 1 - A line on a water table on each side of which the water table slopes downward in a direction away from the line. 2 - The boundary of the cone of pumping depression...... | | Similar Terms |
1055 |
Fault dam spring | Groundwater discharge to the earth`s surface above a reverse fault, the depressed bedrock block being covered with a thick deposit of alluvium and the raised block presenting a barrier to the flow of groundwater...... | | Similar Terms |
1067 |
| Similar Terms |
1076 |
Groundwater cascade | Descent of groundwater on a steep hydraulic gradient to a lower and flatter water-table slope. A cascade occurs below a groundwater barrier or dam which may develop effluent seepage above it, and at the contact of less permeable material with more permeable material downslope...... | | Similar Terms |
1077 |
Groundwater dam | A natural or artificial body of material that is impermeable or has only low permeability and which occurs below the surface in such a position that it impedes the horizontal movement of groundwater and consequently causes a pronounced difference in the level of the water table on its opposite sides...... | | Similar Terms |
1079 |
Groundwater ridge | A ridge-shaped feature of a water table, usually due to excessive seepage of surface water from the area overlying the ridge...... | | Similar Terms |
1080 |
Interstream groundwater ridge | A ridge in the water table formed between two effluent streams, produced by percolation towards the surface streams with the development of a residual groundwater ridge between them (illustrated). ..... | | Similar Terms |
1081 |
| Similar Terms |
1082 |
Groundwater trench | A trench-shaped depression of the water table caused by effluent seepage into a stream or drainage ditch or by movement of groundwater to a thalweg underlying a stream...... | | Similar Terms |