Basic HTML Version
634
Location : on left bank at Ban Pak Min.
510
sq.km.
Amphoe
Chawang
Changwat
Nakhon Si Thammarat
Ban
Pak Min
WATER YEAR : 2012
TAPI RIVER BASIN
Lower Khlong Chandee at Ban Pak Min , Nakhon Si Thammarat (X.257)
Lat 08 - 33 - 34 N Long 99 - 32 - 11 E
Drainge Area
Water - stage recorder
+0.000 m. (MSL.)
B.M.-H.D.
On left bank at the footpath of the bridge.
Elevation
Recording
Arithmetic mean of 24 readings
2007 to date
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
+29.438 m. (MSL.)
Type of Gage
Bench Mark
Location BM
Rating Operation
Period of Available Gage Records
2007 to date
-
2007 to date
Fairly stable.
No overbank flow.
Records fair. Stage-discharge relation defined by 24 discharge measurements made in 2012.
Rated by Current Meter
Stability of Channel Regimes
Overbank Flow Conditions
General Description
Period of Rating
Rated by Flot
Date
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Annual
----------
-----------------
1
23.11
23.35
23.66
23.24
23.20
23.82
23.95
23.36
23.70
24.63
23.08
22.98
2
23.04
23.52
23.53
23.20
23.20
23.62
23.88
23.38
23.60
24.55
23.06
22.96
3
22.97
23.31
23.44
23.33
23.18
23.46
23.81
23.44
24.17
24.16
23.04
22.94
4
22.96
23.25
23.39
23.44
23.16
23.40
23.92
23.51
24.03
24.14
23.02
22.93
5
22.98
23.29
23.45
23.56
23.13
23.56
24.04
23.76
23.98
24.04
23.01
22.92
6
23.00
23.24
23.87
23.45
23.10
23.62
24.15
23.81
23.84
23.98
23.00
22.90
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Gage Height in Meter (MSL.) Water Year April 1, 2012 to March 31, 2013
7
22.98
23.29
25.89
23.35
23.08
23.56
24.32
24.14
23.74
23.84
22.98
22.90
8
22.94
23.33
25.54
23.30
23.06
23.68
24.26
24.59
23.56
23.66
22.96
22.89
9
22.92
23.50
26.66
23.66
23.06
23.86
24.14
24.62
23.44
23.58
22.96
22.88
10
22.91
23.59
26.40
24.58
23.04
24.41
24.39
24.48
23.34
23.54
22.95
22.87
11
22.91
23.53
26.04
25.04
23.02
24.19
23.95
24.32
23.29
23.50
22.95
22.86
12
22.94
23.37
25.68
24.55
23.00
24.06
24.33
24.18
23.26
23.48
22.94
22.86
13
22.90
23.25
25.48
24.40
22.98
23.98
24.53
24.18
23.23
23.45
22.94
22.86
14
22.90
23.18
25.21
23.99
22.96
23.88
24.62
23.82
23.21
23.43
22.94
22.86
15
22.90
23.14
24.90
23.74
22.98
23.76
24.46
23.70
23.94
23.40
22.94
22.85
16
22.90
23.13
24.50
23.62
23.02
23.67
24.36
23.58
23.83
23.38
22.93
22.84
17
23.12
23.27
24.05
23.56
23.04
23.63
24.30
23.54
23.76
23.36
22.93
22.84
18
23.22
23.30
23.84
23.54
23.06
23.63
24.15
23.52
23.64
23.34
22.93
22.83
19
23.33
23.21
23.72
23.50
23.08
23.54
23.92
23.50
23.60
23.32
22.92
22.82
20
23.75
23.14
23.56
23.48
23.10
23.50
23.76
23.46
23.57
23.30
22.92
22.81
21
24.25
23.08
23.50
23.46
23.25
23.59
23.70
23.41
23.48
23.28
22.92
22.79
22
24.51
23.06
23.46
23.40
23.58
23.70
23.78
23.40
23.44
23.24
22.92
22.78
23
24.55
23.01
23.43
23.38
23.44
23.81
23.80
23.38
23.76
23.20
22.91
22.76
24
24.29
23.13
23.38
23.38
23.77
23.87
23.89
23.38
24.46
23.20
22.90
22.76
25
23.76
23.08
23.34
23.34
23.78
23.95
23.96
23.36
24.38
23.18
22.90
22.75
26
23.45
23.25
23.30
23.32
23.82
24.06
24.06
23.33
24.13
23.16
22.95
22.74
27
23.37
23.27
23.28
23.30
23.94
24.06
23.86
23.33
23.91
23.16
23.13
22.74
28
23.25
23.24
23.24
23.28
24.28
23.96
23.72
23.39
23.71
23.12
23.04
22.74
29
23.22
23.45
23.22
23.26
24.65
24.05
23.56
23.48
23.63
23.12
22.73
30
23.30
23.77
23.22
23.22
24.55
24.07
23.48
23.37
23.71
23.12
22.73
31
23.78
23.22
24.14
23.44
24.68
23.10
22.73
----------
--------------
Mean
23.29
23.30
24.21
23.58
23.38
23.80
24.02
23.69
23.74
23.51
22.97
22.83
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Max
24.55
23.78
26.66
25.04
24.65
24.41
24.62
24.62
24.68
24.63
23.13
22.98
26.66
Min
22.90
23.01
23.22
23.20
22.96
23.40
23.44
23.33
23.21
23.10
22.90
22.73
22.73
26.70
m. (MSL.) ,
0.00
m. (MSL.) ,
River Bed 21.80
m. (MSL.)
29.32
m. (MSL.) ,
29.33
m. (MSL.) ,
Drainage Area 510 Square Kilometers
at 12.00 Hours , on Jun 9 , 2012
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Right Bank Elevation
Left Bank Elevation