DEMONSTRATION DATA OF THE NETHERLANDS
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: