Well and borehole path
Sustained yield → demand → pump duty → pressure tank → bulk storage.
Start path →System hub / Phase 2
Wells, Storage & Rainwater
Connect source capability, pump duty, pressure control, stored water and roof collection before selecting equipment.
Keep sustained source capacity, peak demand and stored volume as separate quantities. Test dry and high-demand cases, not only annual averages.
8 tools5 guides1 demand reference
The source-to-use sequence
Source yieldDemandPump dutyPressureStorageEnd use
Balance rates and volumes separately. A source can cover daily volume but still need storage for peaks; a tank cannot correct a sustained daily deficit.
Two connected paths
Rainwater path
Roof area → rainfall yield → first flush → tank simulation → end use.
Start path →Tools on the bench
Well & Borehole Pump Sizing Planner
Build a duty point from pumping level, pressure and losses.
Use tool →Well Yield vs Demand Checker
Compare sustained source production, daily demand and peak storage.
Use tool →Pressure Tank Sizing Calculator
Convert required run time into drawdown and nominal tank volume.
Use tool →Pump Short-Cycling Analyzer
Compare observed starts with a simple drawdown cycle model.
Use tool →Water Storage Tank Sizing Planner
Balance outage demand, refill, reserve and usable volume.
Use tool →Rainwater Harvesting Yield Calculator
Estimate roof collection after runoff and system losses.
Use tool →Rainwater Tank Days-of-Supply Simulator
Step through 365 days of monthly rainfall, storage and demand.
Use tool →First Flush Diverter Sizing Calculator
Convert a local diversion rule into required volume.
Use tool →Understand the decisions
Well, Borehole & Tube Well Terminology
Use globally variable source-water terms carefully.
Read guide →Complete Well Water System Planning
Connect yield, pump duty, controls, pressure and storage.
Read guide →Pressure Tank Drawdown & Short Cycling
Understand precharge, switch settings, run time and symptoms.
Read guide →Water Storage for Demand, Outages & Refill
Separate daily demand, peak use, refill and emergency reserve.
Read guide →Rainwater Harvesting System Planning
Plan from horizontal roof area through treatment and end use.
Read guide →Check demand assumptions
Water Demand Planning Factors
Build explicit average, peak, outage and refill scenarios.
Open reference →Connect pump hydraulics
Total Dynamic Head Calculator
Combine elevation, pressure and losses.
Open pump tool →Pipe Friction Loss Calculator
Compare Hazen–Williams and Darcy–Weisbach.
Open pump tool →Pump Curve Duty Point Comparator
Interpolate and compare up to three candidates.
Open pump tool →Pump Power & Efficiency Calculator
Estimate hydraulic, shaft and input power.
Open pump tool →NPSH Available Calculator
Estimate suction head above vapor pressure.
Open pump tool →Safety and water quality
Groundwater and rainwater quality cannot be inferred from appearance or quantity. Protect source integrity, separate untreated rainwater from safe piped water, test for the intended use, and follow local well, plumbing, storage and public-health requirements. For a separately plumbed wastewater source, use the Greywater Reuse Planning workflow and preserve cross-connection controls.