Basic HTML Version
642
Location : on left bank at the bridge of Hat Yai - Rattaphum Highway.
1,720
sq.km.
Drainge Area
WATER YEAR : 2012
THALE SAP SONGKHLA
Khlong U - Taphao at Ban Hat Yai Nai , Songkhla (X.44)
Lat 07 - 00 - 02 N Long 100 - 27 - 32 E
Amphoe
Hat Yai
Changwat
Songkhla
Ban
Hat Yai Nai
Staff gage
+0.000 m. (MSL.)
B.M.-H.D.
On left bank about 200 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 mean of 5 readings
1967 to date
Rating Operation
Period of Available Gage Records
Location BM
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
+7.439 m. (MSL.)
Bench Mark
Type of Gage
1967 - 1972 , 1983 - 1988 , 1999 to date
-
1967 - 1972 , 1983 - 1988 , 1999 to date
Rather unstable because of backwater effect.
No overbank flow.
Records fair. Stage-discharge relation defined by 21 discharge measurements made in 2012.
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
0.38
0.28
-0.02
-0.08
-0.17
-0.02
0.36
0.38
0.83
0.89
0.37
0.74
2
0.32
0.22
-0.05
0.00
-0.02
0.05
0.11
0.32
0.93
0.83
0.36
0.64
3
0.27
0.22
-0.07
-0.07
-0.08
0.02
0.13
0.36
1.25
0.78
0.39
0.65
4
0.23
0.17
-0.06
-0.10
-0.03
0.03
0.14
0.36
1.39
0.69
0.41
0.56
5
0.23
0.10
-0.07
-0.04
-0.01
-0.02
0.07
0.33
0.79
0.70
0.36
0.64
6
0.47
0.20
-0.03
-0.01
-0.02
-0.02
0.10
0.37
0.54
0.55
0.36
0.56
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Gage Height in Meter (MSL.) Water Year April 1, 2012 to March 31, 2013
7
0.85
0.15
0.03
0.10
-0.02
-0.02
0.05
0.34
0.54
0.56
0.27
0.58
8
0.82
0.18
0.07
0.03
-0.01
0.07
0.07
0.34
0.51
0.48
0.25
0.57
9
0.65
0.20
0.05
0.06
-0.07
-0.01
0.15
0.34
0.55
0.46
0.24
0.58
10
0.38
0.18
0.00
0.00
0.02
0.07
0.17
0.32
0.47
0.52
0.28
0.42
11
0.38
0.24
0.01
-0.05
-0.02
0.10
0.23
0.32
0.58
0.52
0.44
0.38
12
0.33
0.13
0.07
-0.01
-0.01
-0.02
0.34
0.33
0.59
0.52
0.39
0.35
13
0.42
0.10
-0.01
0.02
-0.01
-0.05
0.32
0.36
0.69
0.42
0.48
0.36
14
0.40
0.10
-0.07
-0.01
-0.07
0.03
0.33
0.43
0.64
0.50
0.60
0.34
15
0.46
0.07
-0.13
-0.02
-0.02
0.01
0.38
0.39
0.71
0.55
0.36
0.34
16
0.37
0.00
-0.17
-0.06
0.02
0.06
0.45
0.33
0.70
0.55
0.43
0.27
17
0.47
0.00
-0.17
-0.08
-0.03
0.14
0.45
0.29
0.71
0.51
0.53
0.28
18
0.90
0.01
-0.17
-0.13
-0.03
0.19
0.48
0.28
0.76
0.54
0.52
0.28
19
1.74
-0.04
-0.15
-0.18
0.04
0.21
0.51
0.30
0.75
0.60
0.29
0.25
20
1.63
-0.04
-0.15
-0.14
0.03
0.15
0.51
0.48
0.69
0.51
0.35
0.26
21
1.53
-0.06
-0.17
-0.05
0.00
0.03
0.51
0.42
0.74
0.38
0.37
0.21
22
1.07
-0.10
-0.10
-0.10
0.05
0.05
0.47
0.39
0.68
0.50
0.37
0.25
23
1.18
-0.11
-0.11
-0.07
-0.07
0.02
0.51
0.37
0.77
0.45
0.34
0.24
24
0.50
-0.12
-0.06
-0.01
0.00
0.01
0.45
0.35
0.94
0.42
0.44
0.13
25
0.47
-0.12
-0.03
-0.04
-0.02
0.00
0.45
0.54
0.89
0.35
0.60
0.15
26
0.35
-0.07
0.00
-0.02
-0.10
0.02
0.44
0.74
0.77
0.43
0.70
0.20
27
0.30
0.00
-0.03
0.04
-0.04
0.17
0.44
0.81
0.74
0.41
0.70
0.23
28
0.32
0.08
-0.11
0.03
-0.07
0.51
0.41
0.89
0.72
0.35
0.71
0.17
29
0.20
-0.15
-0.10
-0.03
-0.10
0.71
0.36
0.94
0.66
0.44
0.19
30
0.32
0.02
-0.11
-0.11
0.02
0.60
0.41
0.79
0.72
0.41
0.12
31
-0.04
-0.09
0.01
0.28
0.82
0.40
0.24
----------
--------------
Mean
0.60
0.06
-0.06
-0.04
-0.03
0.10
0.33
0.44
0.74
0.52
0.43
0.36
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Max
1.74
0.28
0.07
0.10
0.05
0.71
0.51
0.94
1.39
0.89
0.71
0.74
1.74
Min
0.20
-0.15
-0.17
-0.18
-0.17
-0.05
0.05
0.28
0.47
0.35
0.24
0.12
-0.18
1.90
m. (MSL.) ,
0.00
m. (MSL.) ,
River Bed -2.66
m. (MSL.)
8.93
m. (MSL.) ,
8.94
m. (MSL.) ,
Drainage Area 1720 Square Kilometers
at 18.00 Hours , on Apr 19 , 2012
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Left Bank Elevation
Right Bank Elevation