Planetscope sensors observe in wavelength regions that allow for retrieval of the turbidity of water in both inland and coastal waters.
Several spectral indices have proved useful for the retrieval and mapping of chlorophyll a levels in inland waters, with this being indicative of algal biomass.
The high temporal frequency of planetscope observations allows for regular monitoring of water levels (e.g., in reservoirs) by combining water extent and bathymetric information, allows water depth to be routinely estimated.
Sedimentation and runoff.
e.g., from Septic tanks
Detection as a result of, for example, rainfall