Basic HTML Version
658
Location : on left bank at the bridge near Wat Bang Sala, Tambon Thung Lan.
1,547
sq.km.
Drainge Area
WATER YEAR : 2011
THALE SAP SONGKHLA
Khlong U - Taphao at Ban Bang Sala , Songkhla (X.90)
Lat 06 - 55 - 39 N Long 100 - 26 - 37 E
Amphoe
Khlong Hoi Khong
Changwat
Songkhla
Ban
Bang Sala
Staff gage
+0.000 m. (MSL.)
B.M.-H.D.
On left bank about 20 meters from the top staff gage.
Elevation
5-time daily readings at 06.00, 09.00, 12.00, 15.00 and 18.00 hours.
Arithmetic means of 5 readings
1971 to date
Rating Operation
Period of Available Gage Records
Location BM
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
+11.254 m. (MSL.)
Bench Mark
Type of Gage
1971 - 1972 , 1979 to date
-
1971 - 1972 , 1979 to date
Fairly stable because of backwater effect.
No overbank flow.
Records fair. Stage-discharge relation defined by 39 discharge measurements made in 2011.
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
5.34
3.18
3.05
2.74
2.57
3.08
3.37
2.72
3.38
6.96
2.83
3.22
2
5.36
3.41
3.12
2.74
2.56
2.93
3.42
2.59
3.22
9.74
2.82
3.36
3
5.11
3.43
2.96
2.91
2.53
2.87
2.80
2.68
3.12
8.50
3.04
3.16
4
4.42
3.43
3.09
3.09
2.53
2.85
2.77
2.55
3.21
7.22
2.80
3.04
5
3.82
3.41
3.06
3.11
2.55
2.64
2.88
2.70
3.73
5.73
2.83
3.25
6
3.35
3.25
3.03
2.95
2.49
2.92
2.87
2.69
3.69
4.38
2.79
3.44
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Gage Height in Meter (MSL.) Water Year April 1, 2011 to March 31, 2012
7
3.19
3.22
2.96
2.92
2.42
3.07
2.87
2.60
3.61
3.71
2.74
3.50
8
3.24
3.18
3.09
2.81
2.41
3.01
2.88
2.99
3.34
3.36
2.82
3.64
9
3.07
3.05
3.21
2.98
2.56
2.86
2.82
2.69
3.12
3.21
3.17
3.22
10
3.25
2.99
3.20
3.05
2.47
2.95
2.81
3.39
2.94
3.58
3.03
3.31
11
3.11
3.09
3.02
3.04
2.50
3.26
2.72
2.59
2.76
3.92
3.09
3.85
12
2.99
3.13
2.80
2.97
2.48
4.66
2.62
2.67
2.92
4.34
3.17
3.50
13
3.18
3.01
2.97
2.84
2.53
5.32
2.65
2.46
3.23
8.54
3.10
3.21
14
3.05
3.10
3.05
2.66
2.49
5.02
2.95
2.63
3.09
8.17
2.85
2.99
15
3.05
3.08
3.03
2.58
2.57
4.17
2.85
2.59
2.86
7.13
2.88
3.15
16
3.05
3.14
2.95
2.51
2.52
3.60
3.16
2.65
3.47
5.90
3.17
3.03
17
3.15
3.22
3.06
2.62
3.06
3.28
2.90
2.77
4.91
4.80
3.10
3.02
18
3.35
3.13
3.11
2.66
2.88
3.11
2.73
2.72
4.82
4.08
3.26
3.03
19
3.10
3.22
3.11
2.57
3.12
2.73
2.82
2.84
4.08
4.00
3.24
3.09
20
3.11
3.05
3.05
2.61
2.99
2.77
2.66
2.76
3.53
5.58
3.07
3.00
21
3.33
3.07
3.06
2.61
3.19
2.89
2.76
3.77
3.19
6.55
3.18
3.12
22
3.00
3.08
3.07
2.67
2.96
2.76
2.69
5.31
3.33
5.74
3.20
3.08
23
3.05
3.02
3.06
2.56
2.99
3.06
2.69
5.45
3.46
4.63
3.13
2.96
24
3.09
3.21
3.00
2.62
2.83
2.68
2.70
6.60
3.19
4.01
3.10
3.10
25
3.00
3.12
2.95
2.60
3.03
2.84
2.63
6.74
2.96
3.86
3.07
3.15
26
3.17
3.04
2.98
2.59
3.07
2.85
2.67
6.08
2.87
3.57
3.20
3.10
27
3.20
2.97
2.99
2.60
3.00
2.58
2.59
5.55
2.79
3.24
3.38
2.94
28
3.13
3.03
2.96
2.54
3.06
2.82
2.65
5.09
2.76
3.04
3.18
2.93
29
3.19
2.92
2.90
2.54
3.14
3.18
2.68
4.46
2.65
3.05
3.06
2.94
30
3.10
2.89
2.86
2.61
3.29
3.44
2.59
3.75
2.64
2.83
3.04
31
3.05
2.58
3.24
2.67
2.97
2.86
3.12
----------
--------------
Mean
3.42
3.13
3.03
2.74
2.78
3.21
2.80
3.57
3.29
5.04
3.04
3.18
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Max
5.36
3.43
3.21
3.11
3.29
5.32
3.42
6.74
4.91
9.74
3.38
3.85
9.74
Min
2.99
2.89
2.80
2.51
2.41
2.58
2.59
2.46
2.64
2.83
2.74
2.93
2.41
10.00
m. (MSL.) ,
0.00
m. (MSL.) ,
River Bed -0.80
m. (MSL)
11.28
m. (MSL.) ,
11.28
m. (MSL.) ,
Drainage Area 1547 Square Kilometers
at 02.00 Hours , on Jan 2 , 2011
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Left Bank Elevation
Right Bank Elevation