Spot

Stage (m)

Stage-discharge rating curve

Data used year/No. of data

Remark

Bongdong

0.15 ≤ h ≤ 0.31

Q = 10.261 × (h − 0.150)^2.006

2006/2

2008/32

Low stage extrapolation estimation equation

01/01 00:00

~/07/01 10:20

After 09/25 19:10

0.31 < h ≤ 0.40

Q = 533.345 × (h − 0.270)^2.363

Extrapolated when less than or equal to 0.32 m

0.40 < h ≤ 1.65

Q = 80.847 × (h − 0.182)^1.933

0.32 ≤ h ≤ 0.56

Q = 259.175 × (h − 0.320)^2.134

07/01 10:30

~09/25 19:00

0.56 < h ≤ 1.65

Q = 80.847 × (h − 0.182)^1.933

Entire period

1.65 ≤ h ≤ 7.75

Q = 57.255 × (h − 0.050)^2.313

Extrapolated when greater than or equal to 2.36 m