International Glossary of Hydrology
(
Explanation of Abbreviations
)
A
abiotic
ablation
abrasion
abrupt wave
absolute humidity
absolute viscosity
absorption band
absorption loss
abstraction
abyssinian well
accelerated flow
acceptance capacity
accretion
accumulation
accumulative precipitation gauge
accuracy
acid rain
acidity of water
acidizing
active basin area
active sensing system
actual density of soil
actual evaporation
actual evapotranspiration
adhesive water
admissible concentration limit
advancing front
advection
aeration
aerobic condition
affluent
afflux
aggradation
aggressive water
air humidity
air moisture
air-entry value
air-line correction
alarm level
albedo
algal bloom
alkaline water
alkalinity of water
alluvial
alluvial channel
alluvial deposit
alluvial fan
alluvial plain
alluvium
altitude
anaerobic condition
analogue
analogue model, analog model (A)
analytical hydrology
anchor ice
anemometer
angularity correction
annual exceedence series
annual flood
annual flow
annual maximum series
annual minimum series
annual runoff
annual series
annual storage
annual storage capacity
anoxic
antecedent precipitation index
antecedent soil moisture
antidunes
apparent velocity
applied hydrology
approach channel
aquiclude
aquifer
aquifer test
aquifuge
aquitard
area of influence
area-elevation curve
areal precipitation
areal reduction factor (of rainfall)
arheic
arid zone
arid-zone hydrology
aridity
arithmetic mean
armouring; armoring (A)
artesian aquifer
artesian basin
artesian head
artesian spring
artesian well
artificial precipitation
artificial recharge
artificial replenishment
aspect
atmometer
atmospheric humidity
attached groundwater
aufeis
auger sampler
autocorrelation
autocorrelation coefficient
automatic station
autoregressive process
autoregressive series
available head
available soil moisture
available storage capacity
avalanche
average
average interstitial velocity
average velocity
average year
avulsion
axisymmetric flow
B
backblowing
backwashing
backwater curve
baffle
balancing reservoir
bank (left, right)
bank storage
bankfull discharge
bankfull stage
bankhead
bar
barrage
barrier
base flow
base level of erosion
base runoff
base station
base-width (of a flood hydrograph)
basin
basin response
beach
beam angle
beam width
Beaufort scale
bed load
bed material
bed profile
bed sediment
bed-load discharge
bed-load trap
bed-material load
belt of fluctuation
bench-mark
bench-mark station
bend
benthon
benthos
bifurcation
bifurcation ratio
bio-assay
biochemical oxygen demand (BOD)
biomass
blind drainage
BOD
bog
boil
border ice
border spring
bored well
bottom current
bottom ice
bottom land
boundary conditions
boundary of saturation
Boussinesq's approximation
Bowen ratio
brackish water
braided channel
braided river
braided stream
breakthrough curve
brightness
brine
broad-crested weir
brook
bubble gauge; bubble gage (A)
bubbling pressure head
bulk density of soil
bund
buoyancy
buried streambed
bypass channel
C
cableway
calibration
calibration tank
calving
canal
canyon
capacity
capillarity
capillary action
capillary conductivity
capillary diffusion (of water)
capillary fringe
capillary hysteresis
capillary interstice
capillary migration
capillary pore
capillary potential
capillary pressure
capillary rise
capillary suction
capillary water
capillary-tube model
capture
carbonate hardness
carryover storage
cascade
catabolism
cataract
catchment
catchment area
catchment response
catchwork
celerity
channel
channel detention
channel flow
channel frequency
channel network
channel precipitation
channel scour
channel storage
chemical gauging
chemical oxygen demand (COD)
clear overflow weir
climate
climatic change
climatic region
climatic year
climatological station
climatological station for hydrological purposes
clogging
closed lake
cloud seeding
cloud top temperature
cloudburst
coagulation
coastal river
coastal stream
COD
coefficient of compressibility (of water)
coefficient of consolidation
coefficient of determination
coefficient of groundwater discharge
coefficient of hydraulic conductivity
coefficient of intrinsic permeability
coefficient of roughness
coefficient of rugosity
coefficient of transmissivity
coefficient of variation
coliform count
collector well
colloidal suspension
colour composite; color composite (A)
compensating reservoir
complete control
complete freeze-up
composite unit hydrograph
composite water sample
compound cross section
compound hydrograph
compound weir
conceptual hydrological model
condensation
conditional probability
cone of depression
confidence band
confidence belt
confidence interval
confidence level
confidence limits
confined aquifer
confining bed
confining layer
confining stratum
confluence
conjugate image
conjunctive use
connate water
conservative pollutants
consolidation
constant-rate dilution gauging
consumptive use
contact angle
contact spring
contamination
continental hydrology
continuity equation
continuous stream
contour (-line)
contracted weir
contraction coefficient
control
control section
control well
convective precipitation
conveyance
correction
correlation
correlation coefficient
correlogram
coulee
covariance
creek
crest
crest gauge; crest gage (A)
crevasse; crevass (A)
critical capillary head
critical depth
critical discharge
critical flow
critical gradient
critical tractive force
critical velocity
cross section (of a stream)
cross-correlation
crossover
cryology
cryosphere
culvert
cumulative precipitation gage
cup-type current meter
current meter
cut-off; cutoff
cyclonic precipitation
D
daily storage
dam
darcy
Darcy coefficient
Darcy's formula
Darcy's law
data archiving
data bank
data base
data collection platform (DCP)
data collection system
data processing
datum level
dead storage
dead water
debris
debris cone
decay
decay rate
deep percolation
deep seepage
degradation
degree-day
delta
dendrohydrology
density
density current
denudation
depletion
depletion curve
depletion rate
depression spring
depression storage
depth (total) of runoff
depth-area curve
depth-area-duration analysis
depth-duration curve
depth-integration sediment sampling
depth-velocity integration method
desalination
desalting
design flood
design storm
detention basin
detention reservoir
detention storage
deterministic hydrology
deterministic system
detrital fan
detritus
detritus
dew
dewatering
dewatering coefficient
dewpoint
diffusion
diffusion coefficient (in porous media)
diffusion well
diffusivity (of an aquifer)
dike
dike
dilution gauging; dilution gaging (A)
dimensional analysis
dimensionless variable
dipping rod
direct flow
direct runoff
directional hydraulic conductivity
discharge
discharge coefficient
discharge hydrograph
dispersion coefficient
dispersive flux
dispersivity
disposal well
distorted model
distribution graph
disturbed soil sample
ditch
diversion of water
divide
divining
divining rod
doline
double float
double mass curve
downstream
dowsing
dowsing rod
drag
drain
drainage
drainage area
drainage basin
drainage coefficient
drainage density
drainage divide
drainage flood
drainage pattern
draw-off; drawoff (A)
drawdown
drawdown curve
drift
driven well
driving head
drizzle
drought
drought index
dry year
dunes
Dupuit's approximation
duration curve
dynamic hydrology
dynamic pressure
dynamic viscosity
dynamic water level
dystrophic water
E
earthquake flood
ebb
echo sounder
economic yield (of aquifer)
ecosystem
eddy
eddy-correlation method
eddy-flux method
eddy-transfer method
effective capacity
effective evaporation
effective evapotranspiration
effective permeability
effective porosity
effective rainfall
effective velocity
effective well radius
effluent
effluent seepage
effluent stream
electric analogue model; electric analog model (A)
electrical conductivity of water
electro-chemical gauging
electro-osmosis
electrolyte
elevation
embankment
emergency spillway
empirical flood formula
endorheic
endorheic lake
energy balance
energy budget
energy gradient
energy head
energy slope
engineering hydrology
enrichment
entrainment
envelope curve
enveloping curve
environmental tracer
ephemeral lake
ephemeral stream
epilimnion
Epper effect
equilibrium drawdown
equilibrium line of glacier
equipotential line (or surface)
erosion
error
estavel
estuary
euphotic zone
eutrophic lake
eutrophication
evaporation (of water)
evaporation opportunity
evaporation pan
evaporation rate
evaporative capacity
evaporimeter
evapotranspiration
evapotranspirometer
exorheic
expected value
experimental basin
experimental watershed (AU)
exsurgence
extreme rainfall
extreme value distribution
extreme value series
F
fall
fall diameter
fall velocity
fall-stage-discharge relation
falling limb
fallout
false colour picture; false color picture (A)
fast ice
fathometer
fault spring
fetch
field
field capacity
field capillary (moisture) capacity
filter pack
filtration
filtration
filtration spring
fines
fingering
firm yield
firn (snow)
firn-limit
firn-line
fissure spring
fissured rock model
five-point method
flash flood
flashy stream
flat-V weir
float
float gauge; float gage (A)
floating pan
flood
flood channel
flood control
flood crest
flood forecasting
flood frequency
flood hydrograph
flood marks
flood plain
flood probability
flood proofing
flood protection
flood routing
flood warning
flood wave
flood-control reservoir
flood-control works
flooded area
flooding
floodwall
floodway
flow line
flow net
flow pattern
flow velocity
flow-duration curve
flowmeter
flowmeter logging
fluid line
fluidization
flume
flushing
fluvial dynamics
fluvial morphology
foehn
foggara
ford
forebay
forecast
forecast (warning) lead time
forecast updating
forecast verification
forecasting error
fork
fossil water
fracture porosity
fracture spring
frazil ice
free acidity
free aquifer
free groundwater
free nappe
free space maximum range equation
free surface flow
free water content of snow
free weir
freeboard
freeze-up
freezing point
frequency analysis
frequency curve
frequency distribution
fresh/salt-water interface
freshet
freshwater
freshwater barrier
freshwater head
freshwater lens
friction losses
front
frontal precipitation
frost
Froude number
FSMR equation
full meander
fully penetrating well
funicular water
G
gaining stream
Galton distribution
gauge datum; gage datum (A)
gauge height; gage height (A)
gauge zero; gage zero (A)
gauging section; gaging section (A)
gauging site; gaging site (A)
Gaussian distribution
geohydrology
geostationary satellite
geothermal gradient
geyser
Ghyben-Herzberg lens
glacier
glacier flood
glacier ice
glaciology
global circulation
global water balance
graded stream
gradex method
grading
grain size
grains of ice
granular ice
gravel pack
gravitational water
gravity flow
gravity spring
grease ice
groin
gross interception loss
ground data
ground ice
ground track
ground truth
groundwater
groundwater basin
groundwater dam
groundwater dating
groundwater depletion curve
groundwater divide
groundwater flow
groundwater hydrology
groundwater level
groundwater mining
groundwater mound
groundwater overexploitation
groundwater recession
groundwater recharge
groundwater reservoir
groundwater runoff
groundwater station
groundwater storage
groundwater surface
groundwater table
groyne
gulch
gully
guttation
gutter
H
hail
halocline
hanging dam
hard pan
hard water
hardness (of water)
head
head loss
headrace
headwaters
heat balance
heat budget
heat capacity
heat-capacity method
heavy water
Hele-Shaw analogue; Hele-Shaw analog (A)
Hele-Shaw model
high water
histogram
historical data
hoarfrostf
hodograph method
homothermy
hook gauge; hook gage (A)
humid zone
hurricane
hydraulic conductivity
hydraulic grade line
hydraulic gradient
hydraulic head
hydraulic jump
hydraulic mean depth
hydraulic radius
hydraulic radius model
hydraulic resistivity
hydraulic structures
hydraulics
hydrodynamic dispersion
hydrogen-ion concentration
hydrogeochemistry
hydrogeological boundary
hydrogeology
hydrograph
hydrographical degradation
hydrographical network
hydrography
hydrological advisory
hydrological cycle
hydrological drought
hydrological element
hydrological forecast
hydrological forecasting
hydrological network
hydrological observation
hydrological observing station
hydrological regime
hydrological station for specific purposes
hydrological warning
hydrological year
hydrology
hydrolysis
hydrometeor
hydrometeorology
hydrometric network
hydrometric station
hydrometry
hydrophyte
hydrosphere
hydrostatic pressure
hyetograph
hygrometer
hygroscopic coefficient
hygroscopic moisture
hygroscopic water
hygroscopicity
hypolimnion
hypsometric curve
hysteresis (in stage-discharge relation)
I
ice
ice age
ice break-up
ice cap
ice cover
ice crystals
ice dam
ice drift
ice forecast
ice gorge
ice jam
ice laying
ice pellets
ice reef
ice regime phase
ice run
iceberg
icing
image
image enhancement
imbibition
impermeable
impervious
impervious boundary
impoundment
inbank capacity
inchannel use
incised river
inclined gauge; inclined gage (A)
index of determination
induced recharge
infiltration
infiltration capacity
infiltration coefficient
infiltration gallery
infiltration index
infiltration routing
infiltration well
infiltrometer
inflow
influent seepage
influent stream
initial gradient
initial rainfall
injection tank
injection well
inland ice sheet
inlandsis
inlet
insolation
instantaneous unit hydrograph
instream use
insulated stream
intake
intake area
integral curve
integration dilution gauging
integration method
intensity-duration curve
intensity-duration-frequency curve
interception
interfacial tension
interflow
intergranular water film
intermediate belt of soil moisture
intermittent spring
intermittent stream
International Hydrological Decade (IHD)
interrupted stream
interstitial velocity
interstitial water
intertropical convergence zone (ITCZ)
intrinsic permeability
intumescence
inundation
invert
inverted capacity
irrigation
irrigation requirement
isobath
isochion
isochrone map
isogram
isohaline
isohyet
isolated porosity
isonival
isopach
isopiestic line (or surface)
isopleth
isopluvial
isotherm
isotopic tracer
isotropy
isovel
J
jetty
joint spring
juvenile water
K
kanat
karez
karst
karst hydrology
karstic river
kinematic viscosity
kurtosis
L
labelling; labeling (A)
lag-time
lagoon
lake
lake ice
lake percentage
laminar flow
land ice
landlocked lake
Laplace equation
laser
lateral inflow
leaching
leaching requirement
lead
leakage
leakage coefficient
leakage factor
leakance
leaky aquifer
leaky boundary
lethal concentration
levee
limnigraph
limnograph
limnology
lipids
litter
live storage
load-carrying capacity
local inflow
log-normal distribution
long-term hydrological forecast
longitudinal section
loop rating curve
losing stream
loss of energy
low water
low-flow channel
lower reach
lysimeter
M
macro-permeability
macrophytes
magmatic water
Markov chain
Markov process
marsh
mass curve
mass curve storage analysis
mass-transfer method
material line
matrix suction
maximum allowable concentration
(maximum) field carrying capacity
maximum instantaneous discharge
maximum permissible concentration
maximum possible flood
maximum probable flood
mean deviation
mean monthly discharge
mean sea-level
mean velocity
mean-section method
meander
meander belt
meander length
meander width
measuring flume
measuring section
measuring weir
median
medium-term (extended) hydrological forecast
meromictic lake
mesophyte
mesosaprobic
mesotrophic
mesotrophic lake
metalimnion
metamorphic water
meteorological (weather) radar
meteorology
method of images
method of small squares
microwave
mid-section method
mineral spring
minimum annual discharge
minimum annual flow
miscible displacement
mixing length
mixing ratio
mixing zone
mobile water
mode
model
model calibration
model fitting
modular flow
modulus of groundwater discharge
moisture suction
moisture tension
molecular diffusion
moment
monitor well
monitoring
monolayer
monomolecular layer
morphometrical characteristics of basin
moving boat method
mudflow
multi-annual mean
multi-annual storage
multi-annual storage capacity
multi-channel system
multiband system
multiple correlation
multiple correlation coefficient
multiple regression
multiple-objective planning
multiple-phase flow
multiple-purpose project
multispectral (line) scanner
multispectral remote sensing
muskeg
Muskingum method
n-year event
N
nadir
nappe
natural control
natural flow
natural levee
natural regulation
neap tide
near infrared
net balance (of glacier)
net budget (of glacier)
net radiation
net storm rain
neutron logging
neutron-scattering method
new snow
nominal particle diameter
non-carbonate hardness
non-modular flow
non-permanent flow
non-stationary flow
non-steady flow
non-structural flood mitigation
non-uniform flow
non-wetting liquid
non-withdrawal use
normal distribution
normal hydrological value
normals
nucleus (condensation,crystallization)
nutrient
O
observation well
off-line
old snow
old snow-line
oligosaprobic
oligotrophic
oligotrophic lake
on-line
on-line hydrological forecasting
open channel flow
optimal design
optimal yield
orographic precipitation
oscillatory wave
osmosis
osmotic pressure
ouedd
outfall
outflow
outlet
outliers
overbank flow channel
overdraft
overexploitation
overfall
overflow
overflow
overflow spring
overland flow
overturn
ox-bow
oxidation
P
pan coefficient
pancake ice
parallel-plate model
parameter
parametric hydrology
partial contraction
partial duration series
partial volume
partially penetrating well
particle size
passive sensing system
path line
Pavlovsky's approximation
peak discharge
peak flow
peak-to-mean flow ratio
peaks-over-threshold series
Pearson distribution
pellicular water
pendular water
perched groundwater
perched stream
percolation
perennial stream
perforated casing
perforated screen
periodic spring
periphyton
permafrost
permanent hardness
permanent station
permanent wilting percentage
permanent wilting point
permeability coefficient
permeameter
persistence
pF
pH
phreatic cycle
phreatic surface
phreatic water
phreatophytes
piezometer
piezometric head
piezometric surface
Pitot tube
pixel
plane flow
playa
pluviometer
PMP
point data
point gauge; point gage (A)
point precipitation
polar orbit
polder
polje
pollutant
pollution
polye
polynia
polynya
polyphase flow
pond
pondage
ponding
ponor
pore volume
porosity
porous material
porous matrix
porous medium
potamology
potential evaporation
potential evapotranspiration
potential yield
potentiometric surface
powder snow
precipitable water
precipitation
precipitation gauge; precipitation gage (A)
precipitation intensity
precipitation station
precision
pressure deficiency
pressure head
pressure ice
primary data processing
primary station
primitive water
principal climatological station
principal hydrometric station
probabilistic process
probability
probability distribution
probability of forecast
probability paper
probable (possible) maximum precipitation (PMP)
probable error
prompt subsurface flow
propeller-type current meter
psychrometer
puddle
pulse dilution gauging
pumped storage
pumping test
pumping water level
purification
Q
qanat
quantile
quantitative precipitation forecast (QPF)
quicksand
R
radar (-rainfall) equation
radial well
radioactive dating
radioactive solution gauging
radioactive tracer
radius of influence
rain
rain gauge; rain gage (A)
rain recorder
rain shadow
rain simulator
rain-gauge shield; rain-gage shield (A)
rainfall (depth)
rainfall distribution
rainfall excess
rainfall intensity
rainfall intensity pattern
rainfall intensity return period
rainfall maximization
random error
random process
random variable
random walk model
rapids
rate of accretion
rate of flow
rating
rating curve (rating table)
rating curve shift
rating flume
rating tank
rational method
raw water
reach
real-time processing
real-time transmission
receding front
recession
recharge
recharge area
recording rain gauge; recording rain gage (A)
recording stage gauge; recording stage gage (A)
recovery
recovery test
recurrence interval
redox potential (rH)
reduction
reference climatological station
reflectivity
regime channel
regional analysis
regression analysis
regression coefficient
regression curve
regression line
regulated flow
regulating reservoir
relative evaporation
relative humidity
relative permeability
relief channel
remote sensing
replenishment area
representative basin
reservoir
reservoir life expectancy
reservoir release rules
reservoir routing
reservoir rules
reservoir trap efficiency
residence time
residual
residual mass curve
residual rain
resolution
resolution cell
response function
resurgence
retarded flow
retarding basin
retarding reservoir
retention
retention curve
return flow
return period
Reynolds number
rH
rheology
rhettara
ridging
riffle
rill
rill and sheet erosion
rime
rip
ripening of snow
Rippl method (mass curve storage analysis)
ripple marks
ripples
rising limb
rising stage
risk
river
river basin
river bed
river mouth
river pool
river training
roiliness
root zone
rotten ice
runoff
runoff coefficient
runoff plot
rush of snowmelt flood
S
S-curve
safe yield
saline water
salinity
salt content
salt-dilution gauging
salt-water
salt-water encroachment
salt-water intrusion
salt-water wedge
saltation
sampling distribution
sandbox model
sanding-up
saprobic
saturated zone
saturation vapour pressure; saturation vapor pressure (A)
scanner
scanning line
scour
screw ice
sea-water intrusion
secondary data processing
secondary hydrometric station
sediment
sediment concentration
sediment discharge
sediment grading
sediment hydrograph
sediment sampler
sediment yield
sediment-carrying capacity
sedimentation
sedimentation diameter
sedimentology
seepage
seepage face
seepage spring
seepage velocity
seiche
semi-arid zone
semi-confined aquifer
semi-confining bed
semi-permeable bed
semi-pervious boundary
sensitivity
serial correlation
serial correlation coefficient
settling
settling velocity
sewage
shale ice
sharp-crested weir
sheet erosion
sheet flow
shifting bed
shifting control
shoal
shore ice
shore-line
short-term hydrological forecast
shower
shuga
sidelooking airbone radar (SLAR)
signifiance
sill
silt
silt content
silt sampler
silting-up
simulation
sink
sink hole
siphon
skewness
skimming
sleet
slope (of water surface)
slope-area method
slotted casing
sludge
sludge ice
slush
slush ice
snow
snow board
snow course
snow density
snow depth
snow gauge; snow gage (A)
snow ice
snow melt
snow patch
snow pillow
snow sampler
snow slush
snow stake
snow survey
snow tube
snow-cover
snow-coverage
snow-line
snow-mantle
snow-melt flood
snow-pack
snow-pack yield
snowdrift
snowfall
snowflakes
soaking
sodium absorption ratio (SAR)
soft water
soil drainage
soil moisture
soil moisture content
soil moisture deficiency
soil moisture deficit
soil moisture equivalent
soil moisture probe
soil moisture profile
soil moisture retention
soil moisture storage
soil moisture tension
soil salinization
soil water
solitary wave
solubility
sounding
sounding pole
sounding rod
sounding weightk
source
specific absorption
specific capacity
specific discharge (of groundwater)
specific discharge (from a basin)
specific drawdown
specific energy
specific groundwater runoff
specific humidity
specific retention
specific storage
specific yield
specific yield
spectral band
spill
spillover (AU)
spillway
spillway capacity
spillway design flood
splash
spray irrigation
spreading
spring
spring tapping
spring tide
sprinkling
spur
spurdike
spurious error
squall
squall line
stable (unstable) reach
stable channel
staff gauge; staff gage (A)
stage
stage gauge; stage gage (A)
stage hydrograph
stage-discharge relation
stagnant water
standard deviation
standard error
standard error of estimate
standard project flood
standardized variate
standing water level
standing wave
static water level
station-year method
stationary orbit
stationary process
stationary wave
statistical hydrology
steady water level
stem flow
step-drawdown test
stilling tube
stilling well
stochastic hydrology
stochastic process
stop bank
storage
storage coefficient
storage curve
storage equation
storage precipitation gauge
storage ratio
storage reservoir
storativity
storm
storm duration
storm maximization
storm runoff
storm surge
storm transposition
storm-intensity pattern
stratification
stream
stream centre line
stream frequency
stream gauging; stream gaging (A)
stream line
stream order
stream profile
stream routing
stream tube
streamflow
structural flood mitigation
subcritical flow
sublimation
sublimation of ice
submergence
subsidence
subsoil
subsurface float
subsurface flow
subterranean stream
suction
sun-synchronous satellite
sunken pan
supercooled water
supercritical flow
surface detention
surface float
surface flow
surface retention
surface runoff
surface tension
surface velocity
surface water
surface water hydrology
surge
surveillance
suspended sediment load
suspended water
swallet
swallow hole
swamp
synchronous satellite
synthetic (unit) hydrograph
systematic error
T
tabular spring
tailrace
tailwater
telemetering
temperature lapse rate
temporary hardness
tensiometer
terminal velocity
thalweg
thaw
thermal capacity
thermal infrared
thermal load
thermal spring
thermo-mineral spring
thermo-osmosis
thermocline
thermodynamic dewpoint temperature
Thiessen polygon
thin-crested weir
thixotropic
throat
throughfall
tidal channel
tidal piezometric efficiency
tidal prism
tidal range
tidal river
tide
time of concentration
time series
toe of interface
tolerance
tolerance limit
torrent
tortuosity
total acidity
total dissolved solids (tds)
total head
total load
total porosity
total storage
totalizer
totalizer precipitation gauge
trace element
tracer
tracer dilution gauging
tractive force
transition zone
translation wave
translatory wave
transmissivity
transpiration
transverse dike
trap efficiency
travel time
trend
triangular-profile weir
tributary
tritium unit (T.U.)
tropical cyclone
true value
true velocity
tsunami
turbidity
turbulent flow
turnover
turnover rate
turnover time
twin-gauge station; twin-gage station (A)
typhoon
U
unconfined aquifer
unconfined groundwater
underflow
underground stream
uniform flow
unit hydrograph
unsaturated zone
unstable channel
unstable control
unstable reach
unsteady flow
upconing
upper reach
upstream
urban hydrology
usable storage
V
V-notch weir
vadose water
valley glacier
valley storage
vapour pressure; vapor pressure (A)
variable
variance
variate
varied flow
vauclusian spring
velocity curve
velocity field
velocity head
velocity of approach
velocity rod
velocity-area method
velocity-contour method
vena contracta
vigil basins (AU)
viscosity
void ratio
vortex
W
wadi
wading measurement
wading rod
warning lead time
wash load
wash-out (precipitation)
waste water
water
water balance
water bleeding
water body
water carrying capacity
water conservation
water cycle
water deficit
water demand
water duty
water equivalent of snow
water equivalent of snow-cover
water exploitation
water film
water flooding
water hammer
water level
water loss
water management
water need
water object
water parting
water policy
water quality
water requirement
water resources
water resources assessment
water resources management system
water sampler
water surplus
water system
water table
water use
water witching
water year
water yield
water-holding capacity
water-holding capacity
water-level recorder
water-supply forecast
water-supply system
water-table aquifer
water-table contour
water-table isohypse
water-table slope
water-witching stick
watercourse
waterfall
waterlogged
watershed
watershed (AU)
watershed divide
watershed management
waterway
wave
wave propagation
weather
Weber number
wed
Weibull distribution
weighted mean
weir
well
well capacity
well development (AU)
well efficiency
well function
well hydrograph
well loss
wet year
wet-line correction
wetted area
wetted perimeter
wetting
wetting front
wetting liquid
whirlpool
wiggle stick
wilting point
wind daily run
wind set-up
wire-weight gauge; wire-weight gage (A)
withdrawal
world water balance
Y
yield (water)
Z
zonality of hydrological phenomena
zone of aeration
zone of dispersion
zone of fluctuation
zone of influence
zone of suspended water
