What rainfall data sources does the professional planner use?

The professional planner fuses rainfall data from NASA POWER, IMD(India) AWS ground stations, Open-Meteo, and Tomorrow.io, EU covered systems ECMWF CDS ERA5, EFAS, OpenWeatherMap, and Meteostat — providing 5 to 50 years of historical analytics and near-real-time rainfall for any Indian or international project site.

Does the professional planner include predictive rainfall forecasting?

Yes. The professional planner ships two predictive horizons: a 0–16 day ECMWF IFS 9 km deterministic forecast for near-term storage & operations planning, and an up to 7-month ECMWF SEAS5 seasonal outlook (Open-Meteo proxy, capped at 217 days) for tank and recharge-pit sizing. Both are auto-converted into expected harvest volume using your roof area and runoff coefficient, and are saved with the project so results are reproducible.

Does the professional planner support IGBC and LEED compliance?

Yes. The professional mode generates a branded PDF report with satellite-verified rainfall baselines accepted by IGBC, LEED, and GRIHA certifiers for water efficiency credit submissions.

What is the difference between the basic and professional rainwater harvesting planner?

The basic planner provides a quick 3 years average rainfall stat of a single-building estimate with minimal inputs. The professional planner adds multiple Project types with various roof types, 50-year historical rainfall analytics, predictive rainfall (0–16 day ECMWF IFS forecast + 7-month SEAS5 seasonal outlook), recharge pit and hybrid system sizing, cost and payback estimation, and a branded compliance PDF.

How does predictive rainfall improve harvest volume estimates in the professional planner?

Predictive rainfall converts a static 50-year historical average into a rolling, forward-looking harvest curve. The professional planner runs the 0–16 day ECMWF IFS 9 km deterministic forecast and the 7-month SEAS5 seasonal outlook against your rooftop and catchment areas, then multiplies each mm × area × runoff coefficient to give expected litres per day, per week, and per month — so tank sizing, first-flush volume, and monsoon-window recharge are budgeted from the storm actually coming, not the storm that fell in 1998.

Do I need meteorology training to use predictive rainwater harvesting in professional mode?

No. The professional planner hides the raw grib output and surfaces three plain-English answers: expected rainfall in the next 16 days (with confidence), expected rainfall in the next 7 months (with El Niño / La Niña context), and the resulting harvest volume for your site. All values flow straight into the compliance PDF and dashboards, so you can present results to a client, MCD/BBMP officer, or CGWA auditor without opening a weather model.

Is the predictive rainfall output audit-ready for CGWA and green-building submissions?

Yes. Every predictive rainfall query is stamped with the source model (ECMWF IFS or SEAS5), issue time, spatial resolution, and the ERA5 10-year baseline used for the delta %. The professional PDF includes a Predictive Rainfall Provenance annex, so CGWA Bhu-Neer NOCAP reviewers, IGBC / GRIHA assessors, and municipal sanction desks can trace every litre of forecast harvest back to the exact model run.

Rain GEO SAT

🟢 PROFESSIONAL — MOST POPULAR

Professional Rainwater Harvesting Design with Rain GEO SAT

Smart Estimator for Homes & Small Buildings — Plan your Rainwater Harvesting System in minutes

What you get

GPS Location Auto-Fill with reverse geocoded site address
Multiple roof types & runoff coefficients
Rainfall from NASA, IMD, Open-Meteo, Tomorrow.io
5–50 year historical rainfall analytics & charts
Storage Tank, Recharge PIT & Hybrid recommendations
Environmental impact (CO₂, trees, energy savings)
Executive Summary with verified counter consistency
Cost & payback estimator for tanker savings
Auto-save projects to your dashboard when signed in
Branded PDF report with results & charts
Predictive Rainfall — 0–16 day ECMWF IFS 9 km deterministic forecast
Predictive Rainfall — up to 7-month ECMWF SEAS5 seasonal outlook
Forecast-driven harvest re-estimate & 30-day rolling tank sizing buffer

See How It Works

Slide 1: Enter site coordinates — GPS auto-fills the address automatically.
Slide 2: Choose from multiple roof types and runoff coefficients.
Slide 3: View 5 to 50 years of historical rainfall analytics and trend charts.
Slide 4: Receive Storage Tank, Recharge PIT, and Hybrid system recommendations.
Slide 5: Open the Predictive Rainfall panel — 0–16 day ECMWF IFS forecast plus 7-month SEAS5 seasonal outlook, both auto-converted to expected harvest volume.
Slide 6: Generate a branded PDF report with all results, forecast summary, and compliance charts.

Predictive Rainwater Harvesting — Professional Mode

The professional planner pairs 50-year historical rainfall with two forward-looking ECMWF models, so you size tanks and recharge pits for the rainfall that is actually coming — not the rainfall that fell a decade ago. Every forecast is auto-converted into expected harvest volume for your rooftop and catchment, and travels into the compliance PDF as an auditable annex.

0–16 day ECMWF IFS 9 km deterministic forecast — daily litres you will harvest, updated every model cycle
Up to 7-month ECMWF SEAS5 seasonal outlook — plan the full monsoon and post-monsoon recharge window in advance
Automatic mm → litres conversion using your rooftop area, catchment area, and runoff coefficient
Forecast vs 10-year ERA5 baseline delta % — spot a deficit or surplus monsoon before it hits your project
Predictive Rainfall Provenance annex in the compliance PDF (model, issue time, resolution, baseline)
One-click export for CGWA Bhu-Neer NOCAP, IGBC / GRIHA, MCD/BBMP, and municipal sanction submissions

Powered by ECMWF Open Data (IFS + SEAS5) with an ERA5 climatology baseline — the same models used by national meteorological services.

Frequently asked questions

What rainfall data sources does the professional planner use?: The professional planner fuses rainfall data from NASA POWER, IMD(India) AWS ground stations, Open-Meteo, and Tomorrow.io, EU covered systems ECMWF CDS ERA5, EFAS, OpenWeatherMap, and Meteostat — providing 5 to 50 years of historical analytics and near-real-time rainfall for any Indian or international project site.
Does the professional planner include predictive rainfall forecasting?: Yes. The professional planner ships two predictive horizons: a 0–16 day ECMWF IFS 9 km deterministic forecast for near-term storage & operations planning, and an up to 7-month ECMWF SEAS5 seasonal outlook (Open-Meteo proxy, capped at 217 days) for tank and recharge-pit sizing. Both are auto-converted into expected harvest volume using your roof area and runoff coefficient, and are saved with the project so results are reproducible.
Does the professional planner support IGBC and LEED compliance?: Yes. The professional mode generates a branded PDF report with satellite-verified rainfall baselines accepted by IGBC, LEED, and GRIHA certifiers for water efficiency credit submissions.
What is the difference between the basic and professional rainwater harvesting planner?: The basic planner provides a quick 3 years average rainfall stat of a single-building estimate with minimal inputs. The professional planner adds multiple Project types with various roof types, 50-year historical rainfall analytics, predictive rainfall (0–16 day ECMWF IFS forecast + 7-month SEAS5 seasonal outlook), recharge pit and hybrid system sizing, cost and payback estimation, and a branded compliance PDF.
How does predictive rainfall improve harvest volume estimates in the professional planner?: Predictive rainfall converts a static 50-year historical average into a rolling, forward-looking harvest curve. The professional planner runs the 0–16 day ECMWF IFS 9 km deterministic forecast and the 7-month SEAS5 seasonal outlook against your rooftop and catchment areas, then multiplies each mm × area × runoff coefficient to give expected litres per day, per week, and per month — so tank sizing, first-flush volume, and monsoon-window recharge are budgeted from the storm actually coming, not the storm that fell in 1998.
Do I need meteorology training to use predictive rainwater harvesting in professional mode?: No. The professional planner hides the raw grib output and surfaces three plain-English answers: expected rainfall in the next 16 days (with confidence), expected rainfall in the next 7 months (with El Niño / La Niña context), and the resulting harvest volume for your site. All values flow straight into the compliance PDF and dashboards, so you can present results to a client, MCD/BBMP officer, or CGWA auditor without opening a weather model.
Is the predictive rainfall output audit-ready for CGWA and green-building submissions?: Yes. Every predictive rainfall query is stamped with the source model (ECMWF IFS or SEAS5), issue time, spatial resolution, and the ERA5 10-year baseline used for the delta %. The professional PDF includes a Predictive Rainfall Provenance annex, so CGWA Bhu-Neer NOCAP reviewers, IGBC / GRIHA assessors, and municipal sanction desks can trace every litre of forecast harvest back to the exact model run.

Ready to design your rainwater harvesting project?

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