engineering recuitment TNPSC AE Civil 2024 Test series Irrigation Engineering Water Requirement of Crops
The relation between duty D in hectares / cumec., depth of water Δ in metres and base period 'B' in days is given by -
1
∆ = \(\frac{{1.98\;B}}{D}\)
2
∆ = \(\frac{{8.64\;B}}{D}\)
3
∆ = \(\frac{{5.68\;B}}{D}\)
4
∆ = \(\frac{{\;8.64\;D}}{B}\)