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(3525) Fall, Drop, Drop structure, Fall structure, Canal weir
1 - A structure designed to secure the lowering of the water surface in a channel in a short distance, and the safe destruction of the liberated surplus energy. In Egypt, a fall or drop structure with water flowing over it and having its surface subject to atmospheric pressure is called a `canal weir`. 2 - The terms `fall` or `drop` also refer to the difference between the upstream and downstream total energy lines of a fall structure.
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Irrigation
Drainage
Dictionary - Canal Irrigation and Drainage Terms
- Drainage area, Drainage basin, River basin, Catchment area, Catchment basin, Catchment, Watershed
- Water parting, Drainage divide, Divide, Watershed divide, Watershed boundary, Topographic divide
- Yield of drainage basin, Annual yield of drainage basin
- Drainage modulus, or Drainage coefficient
- External drainage
- Canalization
- Internal drainage
- Bio-drainage
- Drainage head
- Endogenic drainage
- Allogenic drainage
- Endoreic drainage
- Areic drainage
- Exoreic drainage
- Head of a canal
- Drainage gallery
- Drainage wells
- Horizontal drainage blanket, Pervious blanket, or Drainage filter
- Canal
- Straight canals
- Slightly sinuous canals
- Moderately sinuous canals
- Very sinuous canals
- Rabi and monsoon sections of a canal
- Canal land width, or Right-of-way
- Accumulative escaping power of canal
- Parent canal
- Offtake canal
- Distributary canal
- Distributary head, Secondary canal intake, or Lateral turnout
- Sub-minor head, or Quaternary canal intake
- Fall, Drop, Drop structure, Fall structure, Canal weir
- Fayoum canal weir
- Scouring escape, Sediment escape, Silt escape, Canal Scouring sluice
- Canal overflow spillway
- Canal spillways
- Shaft and culvert canal spillway, Combined overflow spillway and culvert, Subway, Syphon
- Stand pipe and culvert canal spillway
- Siphon spillway (canal)
- Marseilles canal type outlet
- Cross-drainage work, or Drainage crossing
- Level crossing, or Level drainage device
- Culvert aqueduct with full canal banks
- Culvert aqueduct with canal bank retaining walls
- Irrigation pipe aqueduct, Pipe aqueduct, Pipe flume
- Syphon aqueduct, Drainage syphon, Cross drainage culvert
- Drainage overpasses
- Syphon, Inverted siphon, Irrigation syphon, Canal syphon, Syphon superpassage
- Venturi flume drainage crossing
- Drainage culvert, or Supply culvert
- Lift irrigation area, or Lift area
- Canal evaporation losses
- Conveyance losses, Transmission losses, Total losses, or Canal losses
- Continuous-flow irrigation
- Average supply (of a canal)
- Overload of a canal
- Night-storage irrigation system
- Intermittent-flow irrigation system
- Operation of a canal with constant volume
- Operation of a canal with volume control
- Irrigation return flow
- Change of slope (of a canal)
- Farm irrigation structures
- Cross drainage
- Inverted drainage well, or Disposal well
- Collective irrigation system
- Individual irrigation system
- Perennial irrigation
- Seasonal irrigation
- Supplemental irrigation
- Systematic irrigation
- Flow irrigation, or Gravity irrigation
- Pumping irrigation
- Inundation irrigation
- Irrigation from a storage reservoir
- Irrigation from groundwater
- Irrigation by flood water spreading
- Sailab irrigation (a term used in India and Pakistan)
- Micro basin irrigation
- Irrigation by spreading
- Irrigation
- Irrigation interval
- Irrigation dose
- Ideal irrigation interval
- Irrigation season
- Fall irrigation (USA)
- Winter irrigation (USA)
- Early irrigation (USA)
- Sub-irrigation
- Overirrigation
- Irrigation canals
- Navigation canals
- Power canals
- Double purpose canal
- Perennial canal
- Seasonal canal
- Inundation canal
- Link canal, Carrier canal, or Feeder canal
- Contour canal
- Ridge canal
- Side slope canal
- Main canal, Main line, Pipe main, or Principal canal
- Branch canal, Lateral, or Primary canal
- Distributaries, or Secondary canals
- Minors, Distributor minors, or Tertiary canals
- Sub-minors, or Quaternary canals
- Distributary canal
- Parallel canal, or Side canal
- Surface irrigation
- Flood irrigation
- Basin method of irrigation, or Irrigation by beds
- Flush irrigation
- Spate irrigation
- Border irrigation, or Border method
- Flooding from ditches, or (contour ditch irrigation)
- Corrugation irrigation
- Furrow irrigation
- Surge irrigation
- Duration of irrigation
- Secondary flow, Two discharge, or Cutback irrigation
- Primary flow irrigation (single discharge)
- Wave irrigation
- Irrigation through buried drains, Irrigation-drainage, or Vallenhove process
- Irrigation by nappe control, or Ramspol process
- Selection of irrigation parameters
- Sprinkler irrigation
- Irrigation terminal
- Irrigation device
- Perforated pipe sprinkler irrigation
- Irrigation sprinkler machine
- Centre pivot irrigation
- Lateral-move irrigation machine sprinkler method
- Solid set irrigation
- Piloting of irrigation
- Irrigation cycle
- Micro-irrigation, Localized irrigation, Drip irrigation, Trickle irrigation
- Mobile micro-irrigation
- Pulse irrigation
- Surface drip irrigation
- Buried drip irrigation
- Drip irrigation functioning by propulsions
- Micro-irrigation network
- Micro-irrigation nozzle-line
- Irrigation dose
- Semi-automatic control (of irrigation)
- Micro-irrigation system with hydraulic sequential operation
- Automatic control (of irrigation)
- Porous wall microirrigation tubing
- Proportional irrigation pump
- Irrigation water
- Irrigation water requirement, Irrigation need
- Net irrigation requirement, Farm delivery requirement, or Delta at farm
- Crop irrigation requirement
- Diversion requirement, Gross irrigation requirement, or Delta at head of main canal
- Optimum irrigation requirements
- Irrigation efficiency, Farm irrigation efficiency, Farm delivery efficiency, Water conveyance and delivery efficiency, or Overall efficiency
- Irrigation water-requirement
- Subirrigation
- Surge irrigation
- Irrigation water use efficiency
- Unit irrigation efficiency
- Economic efficiency of irrigation
- Irrigation efficiency
- Agronomic efficiency of irrigation or Agronomic productivity of irrigation
- Degree of durability of irrigation
- Drainage
- Drainage channel
- Artificial drainage
- Lowland drainage
- Agricultural land drainage
- Drainage system
- Closed-drainage area, Blind drainage area, or Non-contributing area
- Drainage benefit
- Degree of drainage
- Field drainage
- Field drainage system
- Land drainage
- Natural drainage system
- Seepage drainage
- Subsurface drainage system
- Open channel drainage
- Surface drainage
- Main drainage system
- Drainage fittings
- Drainage pump sump
- Drainage trench
- Drainage head
- Horizontal subsurface drainage system
- Natural drainage or Natural drainage capacity
- Improved drainage or Artificial drainage
- Random drainage system
- Trenchless drainage
- Open-channel drainage
- Convergent drainage pattern
- Natural drainage systems, or Random drainage systems
- Cutoff drainage system, or Intercepting drainage system
- Herringbone drainage system
- Gridiron drainage system
- Double-main drainage system
- Composite drainage system
- Grouping drainage system
- Zigzag drainage system
- Cross-slope ditch system, or Drainage-type terraces
- Drainage-density
- Drainage pattern
- Superposed drainage, Super imposed drainage or Inherited drainage
- Subsurface drainage, Under drainage, Subsoil drainage, Underground drainage, or Covered drainage
- Relief drainage system
- Convergent drainage system
- Elkington drainage system, Sink-hole drainage
- Rerolle drainage system
- Across-the-slope drainage system, or Keythrope drainage system
- Vertical drainage, or Inverted well
- Mole drainage
- Surface drainage system
- Drainage coefficient, Drainage modulus or Drainage design rate
- Drainage design rainfall
- Drainage efficiency
- Drainage season
- Angular drainage pattern
- Arterial drainage
- Canal Scraper
- Dendrite drainage
- Drainage boards (also called prefabricated drains)
- Slot drainage
- Radial drainage pattern
- Trellis drainage pattern
- Drainage density
- Vertical subsurface drainage system
- Drainage pumping station, Drainage pumping plant
- Programmed irrigation
- Fully automatic irrigation system
- Irrigation development project or system
- Drainage terrace, Drainage control terrace, Interception and diversion terrace, Runoff control terrace, or Channel terrace
- Irrigation
- Surface irrigation
- Basin Irrigation
- Overhead irrigation
- Sub‑irrigation
- Microirrigation
- Trickle irrigation
- Drip irrigation
- Total irrigation
- Supplemental irrigation
- Preplant irrigation
- Organic irrigation
- Land drainage
- Design drainage rate
- Soil drainage status
- Excessive drainage
- Imperfect drainage
- Underdrainage
- Singular layout drainage design
- Natural drainage layout
- Composite layout drainage system
- Mole drainage
- Free drainage
- Poor drainage
- Drainage basin
- Conjunctive irrigation planning
- Irrigation project
- Irrigation potential
- Assessment of irrigation charges
- Increment in land revenue, Water advantage rate, or Canal advantage rate
- Irrigation cess
- Water rate, Water charge, Irrigation rate, or Irrigation assessment
- Primary benefits, Primary effects, Direct irrigation benefits, or Direct irrigation effects
- Secondary benefits, Secondary effects, Indirect irrigation benefits, or Indirect irrigation effects
- Economic value of unit of irrigation water
- Revenue value of a unit of irrigation water
