Table 3 Function relations between the mean depth (h) and gravel coverage degree (Cr) and flow discharge (Q) and slope gradient (J) under different conditions.

From: Effects of Simulated Gravel on Hydraulic Characteristics of Overland Flow Under Varying Flow Discharges, Slope Gradients and Gravel Coverage Degrees

Cr

Equation

R2

NSE

n

 

Cr = 0%

\(h=0.00060{Q}^{0.408}\,\sin \,{J}^{-0.181}\)

0.984

0.965

40

(11)

Cr ≠ 0%

\(h=0.00048{(1-Cr)}^{-1.941}{Q}^{0.399}\,\sin \,{J}^{-0.383}\)

0.978

0.930

120

(12)

All slopes

\(h=0.00046{(1-Cr)}^{-2.472}{Q}^{0.402}\,\sin \,{J}^{-0.333}\)

0.974

0.922

160

(13)

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