Water level obtained with satellite altimetry
altimetry processing currently is : active
Surface variation observed with optical and radar imagery.
Water level and surface variations are combined to estimate
the total volume variation
In Situ measurments are unavailable on Hydrolare website.
Image below shows Lake Angostura in color composition.
Envisat & ERS
Click-here- to download time serie's values in text format.
Water level reference is GRACE GGM02C
When you use our data the appropriate citation is :
"Surface monitoring by satellite altimetry" pdf
Learn more about satellite availability and our processing chain.