In spite of several campaigns and infinite awareness activities, water wastage is still an avid problem. In countries like India especially in its rural areas, this problem imposes a great threat.
Is it possible to retrieve information relevant to this from the satellite image data and use it to build a systematic surveillance system for this?
If you are willing to pay the costs for high resolution imagery like Worldview or Ikonos repeatedly, it certainly is possible at an excruciating amount. With opensource image its really difficult because of the coarse resolution. You can try using Sentinel-2 which is 10m to may be monitor the drainage systems. But the problem is in the rural areas these are very narrow and would not even comprise a single pixel on certain occasions. The best would be to use UAVs for monitoring, it wouldn't require a very sophisticated sensor so you could manage your budget also.
Good discussion..
Satellite images assessment may help with data analysis to show the trend of the wasting water...It may provide great spatial and local information on the water pollution...which all lead to a systematic modelling of waste water management...However, the long-term registration of Satellite data seems necessary...
:)
Satellite imagery can be used to identify the water bodies. The spatial resolution of images will determine the smallest regions you can reliably identify.
What do you define as "wastage"? This will determine your algorithms and data specifications.
Thank you Ketan for your reply. Please Refer these images for "wastage".
My concern is how do you distinguish between a valid v/s wasted water content. For example, your first sample, which looks like a farm or field, will have a water supplying canal or pipeline as well. It will look similar. Agree that third sample is a clear wastage. What factors help you determining this (with or without satellite images)?
If water is contaminated with chemicals, there could be a way.
Thanks for your inputs Ketan. I think this question is going to be the starting phase of this critical problem. Currently I am just empty as to how I proceed with this. That is why I posted the question here to discuss on a few ideas.
For the discrimination in waste water and clear water you can determine by studying the spectral response of the two. In case of clear water the absorption in SWIR bands will be more.
Dear of course you can easy use Radar imagery to do groundwater detection
Regards
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