Basic HTML Version
6
Location : on right bank between Phu Pha Dang and Phu Phan about 2 kilometers from Ban Na Ang.
1,309
sq.km.
Drainge Area
WATER YEAR : 2011
KHONG RIVER BASIN
Huai Mong at Ban Na Ang , Udon Thani (Kh.18)
Lat 17 - 34 - 41 N Long 102 - 20 - 22 E
Amphoe
Ban Phu
Changwat
Udon Thani
Ban
Na Ang
Water - stage recorder.
+183.430 m. (MSL.)
B.M.-H.D.
On right bank at the automatic gage building.
Elevation
Recording
Arithmetic means of 24 readings
1957 to date
Rating Operation
Period of Available Gage Records
Location BM
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
+191.432 m. (MSL.)
Bench Mark
Type of Gage
1957 - 1959 , 1965 - 1966 , 1974 - 1980 , 1997 to date
-
1957 - 1959 , 1965 - 1966 , 1974 - 1980 , 1997 to date
Stable.
Overbank flow starts at elevation +190.110 m.(MSL.) , records are channel flow only.
Records good. Stage-discharge relation defined by 19 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
184.61
185.85
187.10
186.54
191.79
188.87
190.37
186.66
186.45
186.33
186.32
184.88
2
184.61
185.91
186.54
186.55
191.93
188.74
190.17
186.66
186.44
186.33
186.32
184.82
3
184.63
185.98
186.04
186.71
191.63
188.22
190.52
186.66
186.41
186.31
186.31
184.78
4
184.61
186.04
186.38
186.89
191.49
187.62
190.95
186.64
186.40
186.30
186.31
184.74
5
184.60
186.09
187.94
186.73
191.31
187.65
190.84
186.62
186.39
186.28
186.32
184.70
6
184.61
186.12
189.29
186.15
190.84
188.61
190.35
186.59
186.38
186.28
186.32
184.70
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Gage Height in Meter (MSL.) Water Year April 1, 2011 to March 31, 2012
7
184.63
186.14
190.58
185.68
190.21
189.91
189.80
186.58
186.37
186.28
186.31
184.70
8
184.66
186.17
190.87
185.41
189.27
190.17
189.21
186.56
186.34
186.27
186.29
184.61
9
184.68
186.21
190.22
185.25
188.18
190.07
188.97
186.57
186.31
186.27
186.27
184.51
10
184.71
186.25
189.56
186.43
187.16
190.03
188.49
186.66
186.29
186.28
186.24
184.38
11
184.75
186.30
189.20
188.85
186.70
189.93
187.72
186.84
186.28
186.29
186.20
184.18
12
184.80
186.36
189.08
188.93
186.70
190.06
187.31
186.78
186.26
186.28
186.16
184.00
13
184.86
186.43
189.02
188.34
187.33
190.75
187.54
186.63
186.23
186.29
186.11
183.85
14
184.91
186.49
188.82
188.01
187.60
191.69
188.28
186.57
186.21
186.30
186.06
183.81
15
184.97
186.38
187.90
188.46
187.64
191.99
188.04
186.57
186.20
186.29
185.93
183.88
16
185.02
186.37
186.98
188.49
188.35
191.82
188.11
186.54
186.22
186.28
185.92
183.95
17
185.07
186.44
186.30
187.92
188.94
191.57
187.93
186.53
186.25
186.28
185.91
184.00
18
185.12
186.55
186.30
187.53
190.28
191.22
187.52
186.51
186.28
186.28
185.76
184.06
19
185.18
186.72
186.31
187.12
190.64
190.96
187.11
186.49
186.29
186.28
185.68
184.13
20
185.25
187.04
186.32
186.52
190.72
190.83
186.91
186.48
186.30
186.28
185.61
184.23
21
185.31
187.14
186.53
186.62
190.69
190.63
186.84
186.48
186.30
186.29
185.51
184.48
22
185.35
186.72
186.36
187.36
190.67
190.45
186.52
186.48
186.30
186.31
185.41
184.87
23
185.39
186.56
186.00
188.08
190.50
190.48
186.40
186.48
186.30
186.30
185.30
184.92
24
185.46
186.39
185.71
187.64
190.01
190.26
186.63
186.47
186.30
186.29
185.24
184.89
25
185.52
186.49
186.11
188.28
189.25
189.57
186.82
186.48
186.30
186.28
185.20
184.83
26
185.57
188.16
187.66
189.79
188.67
188.88
186.75
186.47
186.30
186.28
185.15
184.76
27
185.62
190.86
188.28
189.92
188.53
189.52
186.75
186.47
186.30
186.30
185.07
184.73
28
185.67
191.37
187.81
188.23
189.04
190.90
186.75
186.46
186.29
186.31
184.99
184.71
29
185.73
190.76
187.19
186.89
189.12
191.32
186.77
186.46
186.30
186.32
184.94
184.72
30
185.79
189.79
186.77
186.82
188.97
191.04
186.76
186.46
186.31
186.33
184.72
31
188.58
189.16
188.92
186.74
186.32
186.32
184.78
----------
--------------
Mean
185.06
187.05
187.64
187.46
189.45
190.13
188.06
186.56
186.31
186.29
185.83
184.49
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Max
185.79
191.37
190.87
189.92
191.93
191.99
190.95
186.84
186.45
186.33
186.32
184.92
191.99
Min
184.60
185.85
185.71
185.25
186.70
187.62
186.40
186.46
186.20
186.27
184.94
183.81
183.81
192.03
m. (MSL.) ,
183.43
m. (MSL.) ,
River Bed 182.74
m. (MSL)
191.47
m. (MSL.) ,
190.11
m. (MSL.) ,
Drainage Area 1309 Square Kilometers
at 18.00 Hours , on Aug 1 , 2011
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Left Bank Elevation
Right Bank Elevation