Water that exists as water rights claims in legal documents but not in the real world is known as "paper water". California Water Impact Network
In legal and environmental research, "" is a well-known term. It refers to water that exists in legal documents and rights but does not physically exist in the reservoirs or rivers due to overallocation.
Researchers often experiment with using real water as a surface for AR. Projects like these focus on:
: Using sensors to detect ripples in real water and projecting digital "fish" or "waves" that react to the movement.
: Using the refractive properties of water droplets to trigger AR content on a smartphone. 2. AR for Water Management & Visualization
: Using AR headsets (like HoloLens) to overlay 3D models of underground water pipes onto a street view for maintenance.
There are several papers on using AR to "see" hidden water infrastructure:
