The Science in the Bible

Entry 38 · Section 4: Grow

Watering by Foot, and Watering by Rain

Egyptian farmers direct water through worked channels while Canaan's hills and valleys receive rain from above.

Scripture: Deut 11:10–11

HydrologyAgriculture

The same modeled 105,944 ft³ (3,000 m³) reaches a 2.47-acre (one-hectare) field through six controlled irrigation deliveries or as rainfall across the entire surface.
The same modeled 105,944 ft³ (3,000 m³) reaches a 2.47-acre (one-hectare) field through six controlled irrigation deliveries or as rainfall across the entire surface.

The question

How does the same gross water volume differ when delivered through irrigation events or rainfall?

Why it matters

Equal gross volume does not mean equal usable water because labor, timing, runoff, evaporation, and soil storage differ.

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