Demonstration data
Netherlands, Present
Cabauw, Present
China 1991-2001
Russia 1998-1999
West Africa 1998-1999
Mali, West Africa 1997-1998

Postbus 2176
NL-3800 CD Amersfoort

Tel: + 31 (0)33 463 74 33
Fax: + 31 (0)33 463 74 40


The here presented results are the outcome from a PEP project of NEO and Deltares.

Water storage capacity in near-real-time


The current average water storage capacity can be seen after clicking the Province of interest on the map above.


Input data

The water storage capacity of the soil is derived from the following sources: DRYMON soil water index, the soil map of The Netherlands (NHI), the 30 year average groundwater level per day of the year. The cell size of the soil moisture map and the water storage capacity is 250 m x 250 m.


Background of the derivation of the water storage capacity of the soil

1. ASCAT surface soil moisture is transfered to a Dutch projection system (RD) and a profile soil moisture calculated (SWI). A SWI map example is shown below:

The following figure shows the scaling of the SWI values for the derivation of absolute soil moisture values (theta); making use of the soil map of The Netherlands:


2. The soil moisture data is then integrated with modeled ground water levels so that the water storage capacity of the soil can be calculated, see below an example of the water storage capacity of The Netherlands:


The following figure shows how ground water level and soil moisture data combine toward the water storage capacity of the soil (1m):


3. The water storage capacity of particular areas can be followed. Below a timeseries example is shown for the Province of Utrecht (The Netherlands) for 2010:

Noord-Holland Zuid-Holland Zeeland Noord-Brabant Limburg Utrecht Gelderland Overijssel Drenthe Groningen Friesland Flevoland