Basic HTML Version
352
Location : on right bank about 4 kilometers downstream, Sirikit Dam Site, along Phasom - Silot road.
15,579 sq.km.
WATER YEAR : 2012
NAN RIVER BASIN
Nan River at Ban Hat Phai , Uttaradit (N.12A)
Lat 17 - 44 - 11 N Long 100 - 32 - 27 E
Drainge Area
Amphoe
Tha Pla
Changwat
Uttaradit
Ban
Hat Phai
Water - stage recorder
+69.000 m. (MSL.)
B.M.-H.D.
On right bank in front of gage observer's house.
Elevation
Recording
Arithmetic mean of 24 readings
1966 to date
Rating Operation
Period of Available Gage Records
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
+84.000 m. (MSL.)
Type of Gage
Bench Mark
Location BM
1966 to date
-
1966 to date
Fairly stable.
No overbank flow.
Records fair. Flow regulated by Sirikit Dam reservoir about 6 kilometers above gage site.
Stage-discharge relation defined by 18 discharge measurements made in 2012.
Rated by Current Meter
Stability of Channel Regimes
Overbank Flow Conditions
General Description
Period of Rating
Rated by Flot
Date
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Annual
----------
-----------------
1
70.32
71.79
71.51
71.77
71.14
70.66
70.53
72.06
72.13
72.13
72.06
71.18
2
71.83
72.29
71.41
71.84
70.88
70.53
70.61
71.86
71.49
72.59
71.95
71.43
3
71.96
71.99
71.10
72.31
70.99
70.62
70.70
71.31
71.82
73.06
71.89
71.27
4
71.96
72.10
71.38
72.61
71.18
71.23
70.84
70.93
72.24
73.00
72.20
71.26
5
72.05
71.56
71.52
72.06
70.94
71.20
70.64
71.10
71.53
72.97
72.08
71.55
6
71.87
71.73
71.38
72.21
71.61
71.19
70.51
71.19
71.86
72.01
72.07
71.77
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Gage Height in Meter (MSL.) Water Year April 1, 2012 to March 31, 2013
7
71.88
72.39
71.54
71.77
71.36
71.20
70.67
71.09
71.93
71.91
72.00
71.90
8
72.22
72.54
71.53
72.27
71.24
71.58
70.69
70.98
72.09
72.15
71.83
71.63
9
73.16
72.63
72.09
72.11
71.17
71.78
70.60
71.13
71.59
72.00
71.92
71.07
10
73.19
72.27
71.68
71.49
71.52
72.26
70.54
70.90
71.73
72.13
71.67
70.76
11
73.09
72.27
72.66
71.48
71.82
71.16
70.54
70.36
71.85
72.13
71.82
71.50
12
72.38
72.25
72.62
71.17
71.34
71.10
70.53
71.32
72.06
72.29
71.73
71.39
13
71.31
71.40
72.74
70.86
71.55
70.92
70.49
71.49
71.80
71.59
71.71
71.27
14
70.96
71.70
71.33
71.20
71.82
70.75
70.34
71.22
72.15
72.24
71.85
71.57
15
71.22
71.64
71.31
70.74
71.59
70.79
70.56
71.33
72.05
72.16
71.71
71.65
16
71.68
71.65
71.10
71.17
71.70
70.98
70.45
71.33
71.63
72.37
71.73
71.44
17
73.35
71.38
71.22
71.02
71.29
70.71
70.53
71.21
72.21
72.19
71.57
71.46
18
73.02
71.71
71.28
71.07
71.64
70.57
70.47
70.77
72.24
72.45
71.83
71.52
19
72.69
71.83
72.36
71.22
70.99
70.50
70.51
71.90
71.75
72.27
71.95
71.38
20
71.94
71.72
72.44
70.92
71.13
70.54
70.49
71.69
71.72
71.98
72.21
71.25
21
71.53
71.99
72.16
71.21
70.99
70.53
70.53
71.93
72.11
72.73
71.83
71.17
22
71.03
71.49
72.42
70.61
70.97
70.68
70.65
71.61
71.94
72.67
72.09
71.31
23
71.39
71.70
72.18
71.18
71.10
70.41
70.45
70.62
71.97
72.65
71.63
71.05
24
71.62
71.54
71.96
71.18
70.90
70.62
70.54
71.71
72.29
72.68
71.67
71.24
25
71.72
71.52
71.98
71.33
71.02
70.57
70.57
71.59
72.29
72.24
71.95
71.38
26
71.75
72.46
72.49
71.59
71.25
70.42
70.62
71.99
72.02
72.02
71.73
71.46
27
71.58
71.81
72.32
71.52
71.50
70.79
70.54
72.20
72.14
71.51
72.00
71.32
28
71.49
72.13
72.46
71.26
71.39
70.57
70.77
72.06
72.30
71.86
71.08
71.52
29
71.42
72.00
72.15
71.02
71.24
70.70
70.67
72.23
72.24
72.38
71.35
30
71.99
72.04
71.93
71.23
71.29
70.49
72.10
72.12
71.34
72.25
71.20
31
72.25
71.23
71.10
72.10
71.45
72.00
71.12
----------
--------------
Mean
71.92
71.93
71.88
71.44
71.28
70.87
70.67
71.44
71.93
72.28
71.85
71.37
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Max
73.35
72.63
72.74
72.61
71.82
72.26
72.10
72.23
72.30
73.06
72.21
71.90
73.35
Min
70.32
71.38
71.10
70.61
70.88
70.41
70.34
70.36
71.34
71.51
71.08
70.76
70.32
74.19
m. (MSL.) ,
69.00
m. (MSL.) ,
River Bed 67.15
m. (MSL.)
82.53
m. (MSL.) ,
83.71
m. (MSL.) ,
Drainage Area 15579 Square Kilometers
at 18.00 Hours , on Jan 4 , 2012
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Right Bank Elevation
Left Bank Elevation