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WATER YEAR : 2013
NAN RIVER BASIN
Nan River at Ban Hat Song Khwae , Uttaradit (N.60)
Lat 17 - 24 - 54 N Long 100 - 07 - 58 E
Locat on : on r g t an a out 1 ometer ownstream rom Wat Hat Song K wae.
18,447 sq.km.
Water - stage recorder
+48.500 m. (MSL.)
B.M.-H.D.
On right bank near the Meteorological Station.
Elevation
Recording
+57.592 m. (MSL.)
Bench Mark
Type of Gage
Amphoe
Tron
Changwat
Uttaradit
Ban
Hat Song Khwae
Drainge Area
Location BM
Gage Reading Frequency
Zero Gage at Bottom
Arithmetic mean of 24 readings
1986 to date
1986 to date
-
1986 to date
Stable.
No overbank flow.
Rated by Current Meter
Stability of Channel Regimes
Overbank Flow Conditions
Rating Operation
Period of Rating
Rated by Flot
Period of Available Gage Records
Basis of Mean Daily Gage Height
Records very good. Flow effected by Sirikit Dam reservior.
Stage-discharge relation defined by 24 discharge measurements made in 2013.
Date
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Annual
----------
-----------------
1
49.90
49.62
49.91
49.41
49.73
49.85
49.79
48.82
48.83
50.02
50.60
50.33
2
49.82
49.68
49.93
49.50
49.65
50.18
49.47
48.81
48.90
49.94
50.48
50.28
3
49.71
50.29
49.82
49.41
49.70
50.12
49.53
48.78
48.94
49.94
50.40
50.12
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Gage Height in Meter (MSL.) Water Year April 1, 2013 to March 31, 2014
General Description
4
49.69
50.16
50.09
49.42
49.47
49.62
49.95
48.83
48.96
49.99
50.49
50.42
5
49.89
50.05
50.07
49.31
49.38
49.28
49.62
48.79
48.95
49.92
50.51
50.21
6
49.75
50.01
50.19
49.44
49.28
49.26
49.35
48.76
49.14
50.02
50.30
50.12
7
49.69
49.98
50.23
49.58
49.20
49.29
49.16
48.75
49.26
50.06
50.50
50.02
8
49.54
50.06
49.96
49.72
49.24
49.27
49.06
48.73
49.12
49.95
50.49
50.06
9
49.65
49.87
50.06
50.17
49.41
49.27
48.94
48.72
49.22
49.91
50.45
49.89
10
49.64
49.88
49.97
49.97
49.70
49.35
48.94
48.76
49.35
49.98
50.34
49.87
11
49.64
49.57
50.21
50.14
49.97
49.32
48.84
48.74
49.45
49.98
50.56
50.10
12
49 72
49 46
50 03
50 06
50 23
49 15
48 78
48 88
49 36
49 97
50 61
49 90
.
.
.
.
.
.
.
.
.
.
.
.
13
49.67
49.56
50.19
49.75
49.69
49.30
48.76
48.86
49.41
49.71
50.42
49.78
14
49.46
50.38
50.11
49.53
49.56
49.43
48.74
48.92
49.45
50.20
50.48
49.82
15
49.82
50.22
49.84
49.32
49.57
50.02
48.78
48.92
49.86
50.17
50.44
49.78
16
49.34
50.43
49.66
49.48
49.34
50.50
48.75
48.99
50.02
50.02
50.45
49.78
17
49.55
50.23
49.50
49.26
49.38
50.24
48.76
48.88
49.64
50.02
50.27
49.94
18
49.76
50.17
49.52
49.42
49.28
50.10
49.15
49.12
49.51
49.90
50.66
50.07
19
49.62
50.07
49.57
49.30
49.19
49.67
49.49
48.86
49.42
49.74
50.33
50.07
20
49.64
50.04
49.60
49.34
49.06
49.26
49.68
48.92
49.98
49.99
50.58
49.98
21
49.44
50.26
49.68
49.32
49.01
49.18
49.67
48.87
50.52
50.03
50.49
49.96
22
49.61
50.05
49.67
49.27
49.10
49.11
49.49
48.86
50.15
49.94
50.52
49.98
23
49.84
49.77
49.60
49.20
50.25
49.11
49.26
48.86
49.98
50.39
50.49
49.90
24
49.67
49.85
49.61
49.24
51.28
49.03
49.16
48.83
50.15
50.48
50.23
50.00
25
49.72
49.64
49.51
49.25
50.34
48.92
49.34
48.83
49.95
50.49
50.44
50.17
26
49.54
49.81
49.49
49.30
49.66
48.90
49.35
48.96
50.00
50.53
50.57
50.04
27
49.49
49.76
49.38
49.58
49.41
49.79
49.38
48.80
49.94
50.45
50.49
50.15
28
49.47
49.90
49.34
49.52
49.26
50.85
49.13
48.85
49.99
50.45
50.38
50.18
29
49.43
49.72
49.46
49.58
49.13
51.21
49.02
48.83
49.87
50.47
50.14
30
49.47
49.75
49.36
49.67
49.09
50.44
48.96
48.82
49.93
50.50
50.09
31
49.87
49.62
49.32
48.86
50.01
50.31
50.07
----------
--------------
Mean
49.64
49.94
49.79
49.52
49.54
49.63
49.20
48.84
49.59
50.11
50.46
50.04
Max
49.90
50.43
50.23
50.17
51.28
51.21
49.95
49.12
50.52
50.53
50.66
50.42
51.28
Min
49.34
49.46
49.34
49.20
49.01
48.90
48.74
48.72
48.83
49.71
50.23
49.78
48.72
51.36
m. (MSL.) ,
48.50
m. (MSL.) ,
River Bed 44.81
m. (MSL.)
60.35
m. (MSL.) ,
59.85
m. (MSL.) ,
Drainage Area 18447 Square Kilometers
at 09.00 Hours , on Aug 24 , 2013
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Left Bank Elevation
Right Bank Elevation
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