Basic HTML Version
22
Location : on right bank at the bridge of Mae Chan - Mae Sai Highway from Tambon Pa Sang.
248
sq.km.
Drainge Area
WATER YEAR : 2011
KHONG RIVER BASIN
Nam Mae Chan at Ban Hua Saphan , Chiang Rai (Kh.89)
Lat 20 - 09 - 25 N Long 99 - 51 - 45 E
Amphoe
Mae Chan
Changwat
Chiang Rai
Ban
Hua Saphan
Water - stage recorder
+406.385 m. (MSL.)
B.M.- Temporary.
On right bank at the footpath of the bridge.
Elevation
Recording
Arithmetic means of 24 readings
1993 to date
Rating Operation
Period of Available Gage Records
Location BM
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
+408.840 m. (MSL.)
Bench Mark
Type of Gage
1993 to date
-
1993 to date
Stable.
No overbank flow.
Records good. The local weir situated about 300 meters downstream from the gage site.
Stage-discharge relation defined by 43 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
406.89
406.98
406.96
406.66
407.16
407.13
407.39
407.03
407.06
406.96
406.76
406.67
2
406.89
406.95
406.92
406.64
407.33
407.14
407.30
407.03
407.06
406.92
406.65
406.69
3
406.89
407.23
406.90
406.78
407.20
407.11
407.23
407.11
407.02
406.90
406.69
406.69
4
406.88
407.10
406.93
406.72
407.17
407.27
407.23
407.13
406.89
406.92
406.69
406.69
5
406.87
406.87
406.87
406.59
406.99
407.22
407.22
407.12
406.89
406.92
406.69
406.69
6
406.89
406.88
406.81
406.73
407.05
407.59
407.22
407.14
406.81
406.91
406.77
406.69
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Gage Height in Meter (MSL.) Water Year April 1, 2011 to March 31, 2012
7
406.92
406.84
406.76
406.63
407.10
407.37
407.21
407.14
406.72
406.89
406.89
406.73
8
406.91
406.83
406.75
406.86
407.06
407.25
407.22
407.13
406.72
406.89
406.90
406.75
9
406.93
406.80
406.68
406.84
407.46
407.55
407.22
407.14
406.73
406.89
406.89
406.69
10
406.92
406.93
406.67
406.83
407.14
407.63
407.19
407.13
406.87
406.90
406.86
406.78
11
406.90
407.01
406.67
406.91
407.43
407.34
407.17
407.12
406.74
406.92
406.79
406.86
12
406.90
406.84
406.91
406.93
408.15
407.32
407.17
407.12
406.77
406.92
406.84
406.77
13
406.90
406.79
407.03
406.95
407.43
407.94
407.17
407.11
406.75
406.90
406.81
406.84
14
406.91
406.76
407.12
407.05
407.26
407.63
407.17
407.11
406.91
406.93
406.80
406.87
15
406.91
406.80
406.91
407.39
407.17
407.58
407.17
407.10
406.86
406.93
406.82
406.62
16
406.90
406.92
406.80
407.33
407.14
407.36
407.41
407.10
406.68
406.91
406.82
406.78
17
406.90
407.00
406.76
407.03
407.46
407.29
407.22
407.09
406.92
406.89
406.80
406.79
18
406.89
406.85
406.76
406.98
407.20
407.28
407.16
407.09
406.94
406.89
406.75
406.79
19
406.87
407.03
406.84
407.00
407.16
407.62
407.18
407.08
406.88
406.90
406.81
406.79
20
406.94
407.06
406.60
406.90
407.58
408.03
407.13
407.08
406.87
406.91
406.87
406.81
21
406.93
406.86
406.74
406.97
408.12
408.00
407.13
407.08
406.39
406.89
406.86
406.76
22
406.92
406.77
406.67
406.82
407.52
407.77
407.10
407.08
406.29
406.89
406.76
406.74
23
406.91
406.73
406.65
407.00
407.39
407.43
407.09
407.08
406.24
406.89
406.69
406.78
24
406.91
406.85
406.67
406.99
407.27
407.55
407.09
407.08
406.43
406.90
406.71
406.76
25
406.91
406.98
406.92
406.82
407.22
407.40
407.08
407.07
406.80
406.91
406.78
406.76
26
406.92
406.97
407.68
406.76
408.14
407.37
407.05
407.07
406.94
406.92
406.72
406.80
27
406.89
407.05
407.29
406.95
407.58
407.67
407.05
407.07
406.95
406.93
406.69
406.83
28
406.87
406.99
406.95
406.98
407.34
407.45
407.08
407.06
406.97
406.90
406.67
406.79
29
406.84
406.99
406.78
406.98
407.20
407.79
407.00
407.06
406.99
406.91
406.64
406.78
30
406.88
407.01
406.68
406.96
407.12
407.41
407.02
407.06
406.98
406.90
406.70
31
407.02
406.98
407.09
407.03
406.98
406.90
406.72
----------
--------------
Mean
406.90
406.93
406.86
406.90
407.34
407.48
407.16
407.09
406.81
406.91
406.77
406.76
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Max
406.94
407.23
407.68
407.39
408.15
408.03
407.41
407.14
407.06
406.96
406.90
406.87
408.15
Min
406.84
406.73
406.60
406.59
406.99
407.11
407.00
407.03
406.24
406.89
406.64
406.62
406.24
408.59
m. (MSL.) ,
406.39
m. (MSL.) ,
River Bed 405.89
m. (MSL)
411.67
m. (MSL.) ,
411.67
m. (MSL.) ,
Drainage Area 248 Square Kilometers
at 18.00 Hours , on Sep 20 , 2011
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Left Bank Elevation
Right Bank Elevation