Basic HTML Version
642
Location : on left bank at the bridge.
2,045
sq.km.
Drainge Area
WATER YEAR : 2014
SOUTHERN PENINSULA EAST COAST
Khlong Tha Taphao at Mueang , Chumphon (X.180)
Lat 10 - 29 - 42 N Long 99 - 10 - 23 E
Amphoe
Mueang
Changwat
Chumphon
Ban
-
Staff gage
+0.000 m. (MSL.)
B.M.-H.D.
On left bank at the abutment of the bridge.
Elevation
5-time daily readings at 06.00, 09.00, 12.00, 15.00 and 18.00 hours.
Arithmetic mean of 5 readings
1995 to date
Rating Operation
Period of Available Gage Records
Location BM
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
+5.896 m. (MSL.)
Bench Mark
Type of Gage
1995 to date
-
1995 to date
Stable because of backwater effect.
No overbank flow.
Records fair. Stage-discharge relation defined by 22 discharge measurements made in 2014.
Period of Rating
Rated by Flot
Rated by Current Meter
Stability of Channel Regimes
Overbank Flow Conditions
General Description
Date
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Annual
----------
-----------------
1
0.13
0.16
0.03
0.18
0.41
0.35
0.82
0.74
0.61
0.99
0.70
0.37
2
0.19
0.36
0.19
0.03
0.54
0.43
0.64
0.80
0.73
1.07
0.68
0.47
3
0.15
0.08
0.06
0.06
0.40
0.39
0.79
0.78
0.79
0.98
0.51
0.43
4
0.22
0.23
0.12
0.04
0.51
0.38
0.85
0.82
1.00
0.78
0.61
0.26
5
0.16
0.35
0.18
0.04
0.52
0.24
0.95
0.68
1.03
0.87
0.71
0.38
6
0.25
0.41
0.03
0.28
0.49
0.05
1.25
0.86
1.17
0.86
0.72
0.37
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Gage Height in Meter (MSL.) Water Year April 1, 2014 to March 31, 2015
7
0.32
0.44
0.03
0.09
0.66
0.61
1.16
1.20
1.65
0.82
0.62
0.34
8
0.23
0.35
-0.04
-0.11
0.98
0.46
1.92
1.46
1.41
0.98
0.60
0.39
9
0.22
0.50
0.11
0.06
0.88
0.82
2.00
1.39
1.14
1.01
0.65
0.33
10
0.27
0.52
0.10
0.58
0.71
0.78
1.67
1.70
1.10
0.78
0.67
0.41
11
0.33
0.42
0.20
0.30
0.49
0.80
1.24
1.66
0.98
0.88
0.47
0.49
12
0.24
0.38
0.07
0.44
0.33
0.26
1.06
1.44
0.88
1.38
0.37
0.35
13
0.25
0.36
0.08
0.63
0.19
0.39
1.03
1.11
1.12
0.89
0.54
0.37
14
0.13
0.36
0.31
0.64
0.18
0.54
1.13
1.52
1.19
0.94
0.48
0.36
15
0.19
0.09
0.93
0.57
0.30
0.46
2.02
1.73
0.99
0.85
0.39
0.29
16
0.12
0.21
1.20
1.66
0.35
0.35
1.75
1.56
0.89
0.80
0.39
0.37
17
0.15
0.16
1.92
1.19
0.38
0.96
1.33
2.41
1.00
0.95
0.42
0.29
18
0.11
0.19
1.37
0.84
0.35
1.29
1.06
2.36
1.13
0.99
0.55
0.27
19
0.13
0.12
0.71
0.82
0.42
0.62
0.91
1.82
0.93
1.03
0.51
0.30
20
0.10
0.20
0.56
1.30
0.23
0.38
1.04
1.33
0.95
1.02
0.47
0.23
21
-0.07
0.22
0.32
1.12
0.22
0.39
1.25
1.01
1.18
0.94
0.46
0.33
22
0.24
0.25
0.25
1.17
0.20
0.46
1.22
0.99
1.42
0.84
0.35
0.30
23
0.27
0.19
0.54
1.53
0.24
0.39
1.10
1.05
1.42
0.92
0.32
0.32
24
0.33
0.10
1.88
1.36
0.16
0.38
1.30
1.09
1.02
0.84
0.37
0.38
25
0.31
0.11
1.39
1.36
0.13
0.36
1.27
0.99
1.04
0.54
0.31
0.50
26
0.36
0.05
0.91
1.01
0.26
1.07
1.47
0.92
1.07
0.47
0.34
0.56
27
0.32
0.03
0.50
0.89
0.06
0.87
1.48
1.11
0.98
0.45
0.35
0.55
28
0.37
0.10
0.28
0.79
0.20
0.79
1.20
0.93
0.87
0.53
0.35
0.59
29
0.06
0.01
0.10
0.78
0.42
0.81
1.39
0.77
1.21
0.69
0.62
30
0.06
0.07
0.08
0.85
0.40
0.89
0.94
0.55
0.98
0.72
0.57
31
0.19
0.70
0.31
0.94
0.96
0.79
0.46
----------
--------------
Mean
0.20
0.23
0.48
0.68
0.38
0.57
1.23
1.23
1.06
0.86
0.50
0.40
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Max
0.37
0.52
1.92
1.66
0.98
1.29
2.02
2.41
1.65
1.38
0.72
0.62
2.41
Min
-0.07
0.01
-0.04
-0.11
0.06
0.05
0.64
0.55
0.61
0.45
0.31
0.23
-0.11
2.57
m. (MSL.) ,
0.00
m. (MSL.) ,
River Bed -5.32
m. (MSL.)
6.47
m. (MSL.) ,
7.08
m. (MSL.) ,
Drainage Area 2045 Square Kilometers
at 18.00 Hours , on Nov 17 , 2014
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Left Bank Elevation
Right Bank Elevation