Khosla Formula - Watershed Runoff Estimator

FormulaR_M = P_M − L_M

LossL_M = 0.48 × T_M

Runoff (TCM)A × R_M(m) × 10³

NoteIf R_M < 0, Runoff = 0

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Load Saved Project

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Step 1: Location & Climate Data ?

🌎 IndiaWRIS Rainfall ☁ IMD Rainfall

Location / Place Name

Latitude

Longitude

Average Period

Monthly Rainfall & Temperature

Month	Rainfall P_M (mm) ?	Avg Temp T_M (°C) ?	Data Source

ⓘ Data auto-fetched from Open-Meteo ERA5 Reanalysis (based on IMD & global observations). Verify against IndiaWRIS or IMD CDSP and edit if needed.

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Step 2: Watershed Configuration

#	Watershed Name / ID	Area (km²)

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Watershed Runoff Comparison

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Watershed Map

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Map not loaded.
Upload the same .zip shapefile using Re-attach Shapefile above — the map will render and auto-save to NocoDB so it persists on all computers.

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Detailed Computation Table

Watershed	Area (km²)	Month	P_M (mm)	P_M (cm)	T_M (°C)	L_M (cm)	R_M (cm)	R_M (m)	Runoff (TCM)

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Summary Report

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Saved Projects (NocoDB)

Click Refresh to load saved projects.

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Enter location to fetch climate data, configure watersheds, then calculate

Or click "Load Sample Data" to see a demo with 6 watersheds

Khosla Formula — Watershed Runoff Estimator