glossary 3.1-3.6

Glossary of terms

3.1 Water in motion

fresh water (zoet water) - water with a low concentration of dissolved salts, for example drinking water

groundwater (grondwater) - water that is no longer visible because it has infiltrated into the ground and in rock land ice (landijs) - masses of ice which are on land ocean current (zeestroom) - movement by the wind of a large mass of seawater in a fixed direction

salt water (zout water) - water with a high concentration of dissolved salts, for example sea water

surface water (oppervlaktewater) - water that is visible

such as lakes, fens, rivers and seas

3.2 Water in balance

aquifer (aquifer) - layer that holds water underground fossil water (fossiel water) - water under the ground that

dates back from ancient times

infiltration (infiltratie) - water seeping into the ground non-renewable water resources (niet-vernieuwbaar water) - water that is not, or very slowly replenished which means that it is going to run out (an aquifer for example)

renewable water resources (vernieuwbaar water) - water that is replenished at the same rate that it is being used sustainable water management (duurzaam waterbeheer)

- water management in which renewable water resources are used

useful precipitation (nuttige neerslag) - the difference between precipitation and evaporation (the water that is left)

water balance (waterbalans) - the amount of water that

goes into and out of an area

3.3 Sometimes too much

hurricane (tropische orkaan) - a tropical storm with wind

speeds over 200 km per hour

peak discharge (piekafvoer) - time of the highest river

channel level

soil subsidence (bodemdaling) - sinking of the ground

3.4 Often too little

economic water scarcity (economisch watertekort) - with an economic water scarcity, too little has been invested to get the available water to the people

physical water shortage (fysiek watertekort) - there is too little water in an area to meet the needs of the people without disrupting nature

Make your

water stress (waterschaarste) - all the problems that arise as a result of a shortage of clean drinking water water war (wateroorlod) - an armed conflict over water between population groups within a country or betwee.

states

3.5 The sea is knocking at the front door beach nourishment (zandsuppletie) - pumping sand onto the beach to reinforce the coast (rainbowing) climate adaptation (klimaatadaptatie) - adapting the landscape to a changing climate

coastal erosion (kustafslag) - parts of the beach or dunes that are washed away during a storm

dyke ring (dijkring) - a system of flood defences (dykes, dams, dunes) and higher ground that protects the enclosed area from flooding

dynamic coastal management (dynamisch kustbeheer-coastal management in a dune area where nature is left

to run its course

foredune (zeereep) - row of dunes that are directly adjacent to a coast which act as a defence

IJsselmeer polder (Isselmeerpolder) - reclaimed parts of the former Zuiderzee

peat polder (veenpolder) - an area of peatland that has subsided so much that it is now below NAP (sea level) polder (polder) - dutch term for an area, often below sea level, surrounded by dykes in which the water level is regulated by pumping stations

reclaimed lake floor (droogmakerij) - polder created by

draining a lake or part of the sea

sea polder (zeepolder) - polder formed by building a dyke

around a salt marsh

3.6 The rivers are knocking at the back door area inside the dyke (binnendijks land) - area along a river

or by the sea that is protected by dykes area outside the dyke (buitendijks land) - area along a river or by the sea that is not protected by dykes flood plains (uiterwaard) - the area between the river and the winter dyke which is covered when the river floods riverbed (rivierbed) - the depression carved by erosion in the landscape through which a river flows when thereis sufficient water

water retention basin (retentiegebied) - area in which during high water levels, water is temporary stored to lower the river water level downstream