Theory 059/Water & Sanitation
Harvesting Is a Storage Ratio
The claim
Rainwater harvesting yield is set by storage capacity relative to demand rather than by roof area.
01The mechanism
Yield depends on capturing events between draws; too little storage spills, and roof area only sets the upper bound.
02Predictions
- P1Yield should track the storage ratio.
- P2Enlarging roofs without storage should add little.
03Refutation
Yield tracking roof area would remove the storage term.