💧 Spring-Fed Pump Station: Storage Tank, Leak and Grid Limit (2D cross-section)

2D cross-section of a hill-town water station: a spring-limited pump lifts water to a storage tank that feeds the town and leaks through a sqrt(h) orifice. Change pump speed, capacity, lift, tank area, demand, leakage and the grid power limit, add a demand peak or a pipe joint leak, and watch the tank settle to its equilibrium level. Same helper module as the 3D page, with five in-page numerical checks.