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WATER YEAR : 2013
NAM MAE KOK RIVER BASIN
Nam Mae Lao at Ban Ton Yang , Chiang Rai (G.8)
Lat 19 - 47 - 32 N Long 99 - 45 - 11 E
Locat on : on e t an at t e r ge o C ang Ra - P ayao H g way, Tam on Bua Sa .
2,909
sq.km.
Water - stage recorder
+405.100 m. (MSL.)
B.M.-H.D.
On left bank about 8 meters from the top staff gage.
Elevation
Recording
Amphoe
Mae Lao
Changwat
Chiang Rai
Ban
Ton Yang
Gage Reading Frequency
Zero Gage at Bottom
+410.832 m. (MSL.)
Type of Gage
Bench Mark
Location BM
Drainge Area
Arithmetic mean of 24 readings
1994 to date
1994 to date
-
1994 to date
Fairly stable.
No overbank flow.
Basis of Mean Daily Gage Height
Rated by Current Meter
Stability of Channel Regimes
Overbank Flow Conditions
Rating Operation
Period of Rating
Rated by Flot
Period of Available Gage Records
Records fair. Mae Lao weir situated about 10 kilometers above gage site.
Stage-discharge relation defined by 43 discharge measurements made in 2013.
Date
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Annual
----------
-----------------
1
405.09
405.01
405.20
405.05
406.92
406.05
407.10
406.55
406.29
405.72
405.29
404.86
2
405.09
405.03
405.22
405.03
406.61
406.18
406.84
406.59
406.26
405.60
405.27
404.85
3
405.08
405.06
405.37
405.03
406.51
406.25
407.18
406.29
406.20
405.56
405.25
404.86
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Gage Height in Meter (MSL.) Water Year April 1, 2013 to March 31, 2014
General Description
4
405.06
405.10
405.48
405.04
406.32
405.98
407.36
406.24
406.15
405.58
405.23
404.86
5
405.07
405.21
405.42
405.09
406.12
405.91
407.12
406.25
406.12
405.54
405.21
404.84
6
405.07
405.27
405.54
405.12
406.06
406.46
406.90
406.25
406.10
405.51
405.25
404.89
7
405.07
405.28
405.59
405.09
405.92
407.26
406.84
406.20
406.10
405.44
405.27
404.88
8
405.06
405.21
405.40
405.07
405.95
407.41
406.64
406.20
406.08
405.40
405.22
404.87
9
405.04
405.14
405.36
405.07
406.68
407.40
406.42
406.20
406.08
405.42
405.19
404.87
10
405.06
405.11
405.29
405.12
407.71
407.39
406.28
406.22
406.04
405.41
405.17
404.88
11
405.06
405.10
405.37
405.51
407.68
406.93
406.25
406.20
406.03
405.40
405.13
404.88
12
405 05
405 11
405 92
405 56
407 65
406 61
406 56
406 20
406 02
405 39
405 09
404 88
.
.
.
.
.
.
.
.
.
.
.
.
13
405.05
405.09
405.63
405.28
407.46
406.61
406.08
406.20
406.18
405.35
405.06
404.88
14
405.03
405.08
405.41
405.14
406.83
406.84
406.08
406.27
406.67
405.34
404.93
404.88
15
405.02
405.05
405.21
406.45
406.51
406.77
406.06
406.76
407.08
405.34
404.97
404.87
16
405.01
405.05
405.16
406.49
406.36
406.84
406.02
406.45
406.77
405.33
404.94
404.87
17
405.00
405.06
405.14
406.00
406.23
406.79
405.99
406.26
406.54
405.30
404.90
404.87
18
405.00
405.06
405.11
405.67
406.08
406.72
406.29
406.22
406.40
405.29
404.88
404.89
19
405.01
405.06
405.09
405.51
406.01
406.48
406.88
406.52
406.20
405.29
404.88
404.89
20
405.00
405.06
405.08
405.51
405.95
406.26
407.24
407.20
406.14
405.29
404.87
404.88
21
405.00
405.06
405.09
405.71
405.84
406.13
407.59
407.02
406.11
405.30
404.87
404.87
22
405.00
405.07
405.08
405.66
406.37
406.06
407.35
406.65
406.06
405.29
404.86
404.87
23
405.00
405.06
405.06
405.75
406.65
406.06
407.17
406.45
406.01
405.30
404.86
404.87
24
405.01
405.15
405.05
405.65
406.37
405.99
407.10
406.33
405.99
405.30
404.86
404.87
25
405.01
405.43
405.05
405.53
406.33
406.11
406.94
406.29
405.96
405.30
404.85
404.89
26
405.01
405.48
405.05
405.73
406.18
406.37
406.96
406.25
405.91
405.30
404.84
404.89
27
405.01
405.42
405.06
405.53
406.10
406.60
406.72
406.24
405.89
405.31
404.83
404.89
28
405.00
405.40
405.05
406.59
406.07
407.79
406.57
406.26
405.88
405.29
404.83
404.89
29
405.01
405.38
405.05
406.87
405.98
407.93
406.51
406.24
405.86
405.29
404.89
30
405.00
405.35
405.05
407.82
405.86
407.65
406.44
406.32
405.84
405.30
404.89
31
405.28
407.44
406.01
406.77
405.83
405.29
404.89
----------
--------------
Mean
405.03
405.17
405.25
405.68
406.43
406.66
406.72
406.38
406.15
405.38
405.03
404.88
Max
405.09
405.48
405.92
407.82
407.71
407.93
407.59
407.20
407.08
405.72
405.29
404.89
407.93
Min
405.00
405.01
405.05
405.03
405.84
405.91
405.99
406.20
405.83
405.29
404.83
404.84
404.83
408.07
m. (MSL.) ,
405.10
m. (MSL.) ,
River Bed 404.78
m. (MSL.)
410.61
m. (MSL.) ,
410.59
m. (MSL.) ,
Drainage Area 2909 Square Kilometers
at 21.00 Hours , on Sep 28 , 2013
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Right Bank Elevation
Left Bank Elevation
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