Basic HTML Version
4
Location : on left bank downstream from the bridge on highway.
1,009
sq.km.
Drainge Area
WATER YEAR : 2011
SALAWIN RIVER BASIN
Huai Mae Lamao at Ban Mae Lamao , Tak (Sw.6)
Lat 16 - 45 - 36 N Long 98 - 45 - 16 E
Amphoe
Mae Sot
Changwat
Tak
Ban
Mae Lamao
Water - stage recorder
+268.470 m. (MSL.)
B.M.-H.D.
About 6.25 meters from the automatic gage buiding.
Elevation
Recording
Arithmetic means of 24 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
+278.846 m. (MSL.)
Bench Mark
Type of Gage
1971 to date
-
1971 to date
Stable.
Overbank flow starts at elevation +275.360 m. (MSL.), records are channel flow only.
Records good. Stage-discharge relation defined by 11 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
268.79
269.83
269.36
269.54
270.12
270.02
269.88
269.62
269.38
269.28
269.22
269.10
2
268.77
269.34
269.45
269.49
270.06
270.68
269.91
269.61
269.37
269.27
269.23
269.10
3
268.76
269.28
269.85
269.47
269.96
270.49
269.94
269.60
269.36
269.27
269.40
269.10
4
268.75
269.33
270.53
269.47
269.98
270.20
272.32
269.59
269.35
269.26
269.32
269.10
5
268.74
269.82
270.80
270.06
269.97
270.10
271.58
269.58
269.34
269.26
269.27
269.10
6
268.79
269.85
270.22
269.63
269.95
270.02
271.00
269.57
269.33
269.26
269.19
269.10
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Gage Height in Meter (MSL.) Water Year April 1, 2011 to March 31, 2012
7
268.85
270.10
270.49
269.47
270.10
269.98
270.62
269.56
269.32
269.25
269.18
269.09
8
268.84
269.60
269.92
269.41
269.97
269.98
270.40
269.54
269.31
269.25
269.17
269.09
9
268.83
269.41
269.72
269.36
269.88
269.93
270.24
269.53
269.31
269.24
269.16
269.09
10
268.78
269.41
269.60
269.33
269.83
270.33
270.40
269.52
269.31
269.24
269.15
269.09
11
268.76
269.31
269.53
269.52
269.85
272.12
270.12
269.51
269.31
269.24
269.15
269.18
12
268.76
269.21
269.50
269.68
270.29
274.83
270.04
269.50
269.31
269.24
269.15
269.16
13
268.95
269.15
269.53
269.71
270.09
273.28
269.99
269.49
269.31
269.24
269.14
269.16
14
268.84
269.11
269.43
269.50
269.91
272.26
269.94
269.48
269.31
269.24
269.14
269.14
15
268.78
269.43
269.36
269.50
269.91
271.82
269.93
269.47
269.30
269.24
269.14
269.11
16
268.80
269.47
269.44
269.43
271.38
271.54
270.69
269.45
269.30
269.24
269.14
269.11
17
268.80
269.59
269.51
269.42
270.71
271.22
270.11
269.45
269.30
269.23
269.13
269.08
18
268.77
269.73
269.42
269.38
270.52
271.07
270.11
269.45
269.30
269.23
269.13
269.07
19
268.75
269.58
269.43
269.51
270.90
270.91
269.99
269.44
269.30
269.23
269.12
269.06
20
268.78
269.49
269.38
269.52
270.73
270.72
269.92
269.43
269.30
269.23
269.12
269.05
21
268.80
269.43
269.33
270.16
271.24
270.56
269.88
269.43
269.30
269.23
269.12
269.05
22
268.76
269.71
269.33
270.18
270.66
270.50
269.84
269.42
269.29
269.22
269.12
269.04
23
268.74
269.40
269.29
269.94
270.40
270.40
269.81
269.42
269.29
269.22
269.12
269.04
24
268.74
269.28
269.34
269.83
270.24
270.33
269.78
269.41
269.29
269.21
269.12
269.04
25
268.77
269.22
269.65
270.00
270.13
270.20
269.76
269.41
269.29
269.21
269.11
269.05
26
268.75
269.77
269.97
269.78
270.18
270.11
269.74
269.40
269.29
269.21
269.11
269.08
27
268.85
269.40
271.08
270.10
270.20
270.06
269.72
269.40
269.29
269.20
269.11
269.13
28
268.80
269.92
270.42
269.81
270.38
270.02
269.69
269.40
269.29
269.20
269.11
269.12
29
268.89
269.60
269.92
270.58
270.05
269.98
269.70
269.39
269.29
269.19
269.11
269.09
30
269.00
269.58
269.67
269.99
270.48
269.92
269.67
269.39
269.28
269.19
269.07
31
269.33
269.87
270.15
269.64
269.28
269.19
269.04
----------
--------------
Mean
268.80
269.51
269.75
269.70
270.27
270.79
270.14
269.48
269.31
269.23
269.16
269.09
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Max
269.00
270.10
271.08
270.58
271.38
274.83
272.32
269.62
269.38
269.28
269.40
269.18
274.83
Min
268.74
269.11
269.29
269.33
269.83
269.92
269.64
269.39
269.28
269.19
269.11
269.04
268.74
275.47
m. (MSL.) ,
268.47
m. (MSL.) ,
River Bed 267.76
m. (MSL)
277.33
m. (MSL.) ,
275.35
m. (MSL.) ,
Drainage Area 1009 Square Kilometers
at 18.00 Hours , on Sep 12 , 2011
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Left Bank Elevation
Right Bank Elevation