Dear all, I work for a big irrigation district. It seems that some farmers are illegally using irrigation water from the main canals at night which is prohibited. The crop areas are around 5-20 ha and are located in the Valle del Cauca region (Southwest part of Colombia). I'd like to know if there is a way of using RADAR (Sentinel-1) or multispectral data (Sentinel-2) through Google Earth Engine to determine if some fields have been recently irrigated. Thanks in advance for any reference or tutorial you might share.
It can be done by obtaining the "Crop Water Stress Index", which requires evapotranspiration.
Check this link in case this helps
Article Near real-time agriculture monitoring at national scale at p...
The water is pumped out at night through buried pipes buried near the canal. Biogeophysical profiles (dowsing methods) must be made along the canal, or with a georadar, which locates the geophysical "anomaly" represented by the trench dug to bury the hose/pipeline. In order to objectify the detection, a narrow but strong plow "hook" must be pulled to hang the pipe. I did something like this...
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