Basic HTML Version
398
Location : on left bank at the bridge.
2,170
sq.km.
Drainge Area
WATER YEAR : 2012
NAN RIVER BASIN
Nam Wa at Tha Li Bridge , Nan (N.75)
Lat 18 - 33 - 00 N Long 100 - 48 - 41 E
Amphoe
Wiang Sa
Changwat
Nan
Ban
Tha Li Bridge
Water - stage recorder
+182.805 m. (MSL.)
B.M.- H.D.
On left bank at the approach of the bridge.
Elevation
Recording
Arithmetic mean of 24 readings
2006 to date
Rating Operation
Period of Available Gage Records
Location BM
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
+196.616 m. (MSL.)
Bench Mark
Type of Gage
2006 to date
-
2006 to date
Fairly stable.
No overbank flow.
Records fair. Stage-discharge relation defined by 47 discharge measurements made in 2012.
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
184.16
184.45
184.55
184.55
186.96
186.74
185.29
184.75
184.75
184.36
184.78
184.23
2
184.16
184.39
184.68
185.03
187.08
187.61
185.24
184.75
184.68
184.36
184.63
184.23
3
184.20
184.39
184.76
185.89
186.68
187.94
185.21
184.74
184.63
184.35
184.40
184.23
4
184.27
184.44
184.82
185.81
186.80
187.62
185.19
184.80
184.61
184.34
184.30
184.22
5
184.33
184.48
184.71
185.79
186.76
187.49
185.18
184.91
184.57
184.34
184.29
184.22
6
184.44
184.49
184.62
185.76
186.14
186.75
185.43
184.79
184.55
184.34
184.28
184.22
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Gage Height in Meter (MSL.) Water Year April 1, 2012 to March 31, 2013
7
184.39
184.54
184.65
185.62
186.00
186.56
185.31
184.79
184.53
184.33
184.27
184.21
8
184.36
184.55
184.79
185.53
186.78
186.59
185.19
184.78
184.52
184.32
184.26
184.21
9
184.40
185.01
184.80
185.32
188.13
186.65
185.17
184.78
184.52
184.32
184.25
184.21
10
184.38
184.65
184.80
185.22
188.97
186.51
185.10
184.78
184.51
184.32
184.24
184.20
11
184.34
184.59
184.80
185.18
188.73
186.62
185.00
184.78
184.51
184.31
184.24
184.22
12
184.33
184.56
184.98
185.10
188.31
186.49
184.98
184.80
184.51
184.31
184.24
184.22
13
184.32
184.54
184.76
185.08
187.49
186.47
184.96
184.62
184.50
184.31
184.24
184.21
14
184.29
184.52
184.71
185.07
186.94
186.41
184.91
184.64
184.50
184.30
184.24
184.21
15
184.26
184.52
184.66
185.04
186.75
186.22
184.94
184.67
184.50
184.30
184.24
184.21
16
184.23
184.49
184.59
184.94
186.55
186.03
184.94
184.81
184.49
184.29
184.23
184.20
17
184.20
184.45
184.74
185.10
186.40
185.84
184.94
184.66
184.48
184.28
184.23
184.20
18
184.16
184.43
184.74
184.93
186.31
185.78
184.94
184.64
184.46
184.27
184.23
184.20
19
184.15
184.43
184.65
184.89
186.09
185.79
184.95
184.64
184.46
184.26
184.23
184.20
20
184.15
184.43
184.52
185.22
186.37
185.69
184.96
184.62
184.46
184.26
184.23
184.19
21
184.15
184.44
184.51
185.05
186.16
185.56
184.95
184.60
184.45
184.27
184.23
184.19
22
184.15
184.47
184.50
184.99
186.13
185.45
184.94
184.59
184.43
184.27
184.23
184.19
23
184.16
184.47
184.49
185.00
186.14
185.37
184.93
184.56
184.41
184.26
184.23
184.19
24
184.17
184.48
184.48
185.31
186.07
185.36
184.91
184.54
184.40
184.26
184.23
184.18
25
184.17
184.48
184.47
187.81
186.26
185.34
184.89
184.52
184.39
184.25
184.23
184.17
26
184.17
184.50
184.45
187.72
186.46
185.42
184.88
184.52
184.38
184.25
184.23
184.17
27
184.17
184.48
184.45
187.36
186.22
185.37
184.80
184.56
184.38
184.25
184.23
184.17
28
184.17
184.48
184.46
186.64
186.40
185.35
184.80
184.66
184.38
184.24
184.23
184.17
29
184.20
184.55
184.47
186.56
186.43
185.33
184.79
185.44
184.37
184.24
184.17
30
184.35
184.55
184.49
186.54
186.60
185.31
184.76
185.09
184.37
184.24
184.17
31
184.55
186.68
186.60
184.75
184.36
184.40
184.17
----------
--------------
Mean
184.25
184.51
184.64
185.64
186.76
186.19
185.01
184.73
184.49
184.30
184.28
184.20
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Max
184.44
185.01
184.98
187.81
188.97
187.94
185.43
185.44
184.75
184.40
184.78
184.23
188.97
Min
184.15
184.39
184.45
184.55
186.00
185.31
184.75
184.52
184.36
184.24
184.23
184.17
184.15
189.65
m. (MSL.) ,
182.80
m. (MSL.) ,
River Bed 181.32
m. (MSL.)
196.56
m. (MSL.) ,
196.49
m. (MSL.) ,
Drainage Area 2170 Square Kilometers
at 18.00 Hours , on Aug 10 , 2012
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Left Bank Elevation
Right Bank Elevation