Also consider giving Sentinel-1 a look, if you haven't already. C-band synthetic aperture radar, about 20 m ground resolution in its land imaging mode. Radar im

Also consider giving Sentinel-1 a look, if you haven't already. C-band synthetic aperture radar, about 20 m ground resolution in its land imaging mode. Radar imagery works really well for water detection, and since it penetrates clouds it works all-weather day-or-night. Nominal revisit is about every 2 days at the mid latitudes, although one of the two spacecraft failed so it's currently about every 4 days until ESA can launch a replacement. The Alaska Satellite Facility (a NASA center) provides a graphical search tool and APIs for accessing Sentinel-1 data, as well as a bunch of tutorials. https://asf.alaska.edu/ https://asf.alaska.edu/