International Commission on Irrigation & Drainage Commission Interationale des Irrigation et du Drainage

Multilingual Technical Dictionary (MTD)
<<    Browsing page 1 of 16    >>
Term No.Term Name/Term DescriptionAction
54
Annual-flood peak series
The tabulation or graph in order of decreasing magnitude of the maximum peak floods of each year.
Similar Terms
275
Bunching, or Clustering
In a systematically oscillating pattern, where signs (or symbols) occur in concentration, they are said to be `bunching` or `clustering`......
Similar Terms
324
Engineering maps
Maps for engineering projects, designed to show accurate horizontal and vertical survey control data, natural features, engineering works and services and other specific information relating to the site or along the right of way......
Similar Terms
680
Engineering hydrology
The application of hydrological principles to problems posed by civil engineering structures.
Similar Terms
740
Ice fringe
Ice deposit of moisture, not hoarfrost, exuded from stems of plants.
Similar Terms
793
Rain recording gauge, Rain recorder, Self-registering gauge, pluviograph
A recording instrument for measuring rainfall.
Similar Terms
921
Design flood hydrograph, Inflow Design Flood
The hydrograph of flow adopted to represent limiting volumes and concentration of runoff for use in determining design capacities of spillways for dams, etc., or other hydraulic studies......
Similar Terms
942
Thomas-Fiering model
Auto-regressive scheme to generate annual and monthly flows.
Similar Terms
945
Flash flood
A flood of short duration and abrupt rise with a relatively high peak  discharge, usually resulting from a high intensity of rainfall over a small area......
Similar Terms
946
Flood stage
The elevation of the water surface fixed by local usage above which the stream is considered to be in flood.
Similar Terms
947
Maximum probable flood
Greatest flood that may be expected, taking into account all pertinent factors of location, meteorology, hydrology and terrain......
Similar Terms
948
N-Year flood
A flood which has a probability of being equalled or exceeded once every N-years or has one chance in N of occurring in any one year......
Similar Terms
949
Design flood
1 – Flood discharge taking into account economic and hydrological factors, adopted for the design of a hydraulic structure or river control work. 2 – The flood adopted to control the design of a structure. 3 – The flood against which a given area is to be protected......
Similar Terms
951
Sharp-crested flood
Flood of short duration with a relatively high peak discharge.
Similar Terms
952
Sheet flood
A flood which spreads as a thin sheet of water over a large area and is not concentrated in channels. Sheet floods are of short duration, generally being measured in minutes or hours, and the water is always muddy......
Similar Terms
953
Flood frequency
Over a period of many years, the average number of times a flood of a given magnitude is likely to occur.
Similar Terms
956
Flood wave
Rise of streamflow to a maximum crest and its subsequent recession, caused by a period of precipitation, snow melt, dam failure or hydroelectric plant release......
Similar Terms
980
Zone of weathering
The outer layer of the earth crust of the earth, including the exposed surface and that part which, as a result of porosity, cracking, and jointing, is subject to the destructive action of atmospheric influence, rain, frost and oxidation......
Similar Terms
988
Capillary groundwater, or Fringe water
Water in the capillary fringe.
Similar Terms
995
Gravity spring
1 - The localised seepage of groundwater from an outcropping aquifer. 2 - A spring whose water flows from permeable material, or from openings in a rock formation entirely under the action of gravity......
Similar Terms
1026
Water-bearing media or Water-bearing strata
A formation that contains groundwater. It is usually applied to formations from which the groundwater may be extracted by pumping, drainage, etc......
Similar Terms
1048
Spring
1 - A surface where, without the agency of man, water issues from a rock or soil on to the land or into a body of water, the place of issuance being relatively restricted in size. Springs are classified in accordance with many criteria, including character of water, geologic formation, geographical location. 2 - Pertaining to tides which have an in.....
Similar Terms
1049
Alluvial-slope spring, Boundary spring, or Border spring
A spring that occurs on the lower slope of an alluvial cone at the point where the water table slope and the surface gradient are equal. This point is often located at the point of gradation from pervious sand with a flat water table slope to less pervious alluvial material which calls for a steep slope to carry the water supplied from above......
Similar Terms
1050
Artesian spring
A spring whose water issues under artesian pressure, generally through some fissure or other opening in the confining bed that overlies the aquifer......
Similar Terms
1051
Barrier spring
A spring that occurs when a raising of the confining bed forces the groundwater to rise to ground surface.
Similar Terms
<<    Browsing page 1 of 16    >>