Water in the rice fields

My question is how can I identify the presence of water in rice fields when the plant is already more than 40 cm, I can not see the water with images SENTINEL2 because the plant prevents it, but I think that with SENTINE1 I have to be able to do it Even when it’s the C band, does anyone have any ideas or suggestions? Thank you
Pedro Ruiz from Argentina

I think we only need one topic: Monitor rice with sentinel1

If your initial question was not answered, feel free to continue the discussion there. It is completely legit to ask more specifically or to wait for more answers.