Basic HTML Version
290
Location : on left bank at Amphoe Sam Ngao.
9,930
sq.km.
Drainge Area
WATER YEAR : 2011
WANG RIVER BASIN
Wang River at Ban Chiang Rai , Tak (W.23)
Lat 17 - 22 - 01 N Long 99 - 06 - 55 E
Amphoe
Sam Ngao
Changwat
Tak
Ban
Chiang Rai
Staff gage
+141.291 m. (MSL.)
B.M.-H.D.
On left bank near the gage site.
Elevation
5-time daily readings at 06.00, 09.00, 12.00, 15.00 and 18.00 hours.
Arithmetic means of 5 readings.
2001 to date
Rating Operation
Period of Available Gage Records
Location BM
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
+148.844 m. (MSL.)
Bench Mark
Type of Gage
2001 to date
-
2001 to date
Stable.
Overbank flow starts at elevation +147.560 m. (MSL.), records are channel flow only.
Records very good.Stage-discharge relation defined by 24 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
142.27
142.72
143.33
143.83
143.05
145.61
147.57
143.43
142.65
142.28
142.09
142.20
2
142.37
142.71
143.21
143.68
144.63
145.45
146.73
143.52
142.78
142.28
142.10
142.22
3
142.48
142.63
143.06
143.37
147.72
145.97
147.89
143.41
142.77
142.28
142.58
142.20
4
142.53
142.63
143.07
143.46
148.41
145.88
148.74
143.34
142.75
142.32
142.71
142.21
5
142.44
142.98
143.29
144.25
148.82
145.43
149.03
143.28
142.73
142.33
142.79
142.29
6
142.41
143.20
143.26
144.11
148.83
144.86
149.37
143.22
142.74
142.33
142.87
142.37
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Gage Height in Meter (MSL.) Water Year April 1, 2011 to March 31, 2012
7
142.40
143.29
143.64
143.53
148.24
144.70
149.13
143.09
142.72
142.32
142.72
142.41
8
142.44
143.32
143.83
143.22
147.20
144.99
148.39
143.06
142.68
142.39
142.47
142.43
9
142.43
143.15
143.49
143.03
146.41
145.71
146.63
142.98
142.69
142.44
142.38
142.46
10
142.46
143.70
143.27
142.92
146.02
145.85
145.72
143.26
142.70
142.39
142.30
142.50
11
142.48
146.81
143.08
143.09
145.89
146.18
145.02
143.04
142.68
142.37
142.27
142.52
12
142.50
147.70
142.98
143.11
146.13
147.17
144.73
142.98
142.68
142.37
142.25
142.54
13
142.50
147.16
143.00
143.26
147.05
147.45
144.48
142.95
142.67
142.37
142.21
142.54
14
142.42
145.72
142.96
143.01
146.94
147.67
144.15
143.01
142.66
142.37
142.21
142.46
15
142.31
145.14
142.87
142.82
146.50
147.65
143.82
142.99
142.63
142.37
142.31
142.66
16
142.26
145.03
142.72
142.85
146.05
147.55
144.06
143.09
142.57
142.35
142.27
142.61
17
142.24
144.71
142.60
143.57
146.02
147.53
144.27
143.05
142.49
142.37
142.67
142.55
18
142.21
144.64
142.53
144.23
145.65
147.01
144.97
143.00
142.43
142.38
142.77
142.48
19
142.19
145.49
142.63
144.20
145.87
146.30
145.49
143.00
142.46
142.36
142.86
142.42
20
142.19
145.60
142.80
143.97
146.22
145.79
144.77
143.04
142.34
142.34
142.85
142.41
21
142.24
145.04
142.81
143.68
146.18
145.75
144.31
143.03
142.33
142.35
142.66
142.48
22
142.44
144.63
142.80
143.33
146.61
145.33
144.01
143.02
142.23
142.33
142.54
142.46
23
142.66
144.16
142.76
143.27
146.72
145.62
143.86
142.92
142.27
142.32
142.49
142.40
24
142.79
143.85
142.62
143.13
145.87
145.72
143.60
142.89
142.28
142.31
142.44
142.32
25
142.76
143.65
142.52
142.95
144.59
145.15
143.63
142.84
142.25
142.28
142.38
142.27
26
142.85
143.56
142.51
142.94
144.63
145.99
143.53
142.77
142.32
142.20
142.33
142.21
27
142.98
143.68
142.77
143.20
146.27
146.12
143.42
142.74
142.28
142.14
142.28
142.20
28
142.73
143.77
143.74
143.43
146.29
146.62
143.34
142.68
142.26
142.34
142.23
142.19
29
142.58
143.72
144.42
143.32
146.13
147.28
143.26
142.65
142.28
142.14
142.20
142.22
30
142.68
143.55
144.30
143.04
145.69
147.63
143.24
142.64
142.27
142.12
142.32
31
143.27
142.94
145.71
143.22
142.32
142.09
142.38
----------
--------------
Mean
142.47
144.23
143.10
143.38
146.33
146.20
145.30
143.03
142.51
142.31
142.46
142.38
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Max
142.98
147.70
144.42
144.25
148.83
147.67
149.37
143.52
142.78
142.44
142.87
142.66
149.37
Min
142.19
142.63
142.51
142.82
143.05
144.70
143.22
142.64
142.23
142.09
142.09
142.19
142.09
149.38
m. (MSL.) ,
141.29
m. (MSL.) ,
River Bed 140.78
m. (MSL)
147.55
m. (MSL.) ,
148.66
m. (MSL.) ,
Drainage Area 9930 Square Kilometers
at 06.00 Hours , on Oct 23 , 2011
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Left Bank Elevation
Right Bank Elevation