Basic HTML Version
298
Location : on right bank about 5 meters downstream from Phathana Phak Nua 8 Bridge.
7,749
sq.km.
WATER YEAR : 2011
YOM RIVER BASIN
Yom River at Ban Nam Khong , Phrae (Y.1C)
Lat 18 - 07 - 57 N Long 100 - 07 - 42 E
Drainge Area
Amphoe
Mueang
Changwat
Phrae
Ban
Nam Khong
Water - stage recorder.
+143.500 m. (MSL.)
B.M.-H.D.
In front of the station office
Elevation
Recording
Arithmetic means of 24 readings
1979 to date
Rating Operation
Period of Available Gage Records
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
+153.972 m. (MSL.)
Type of Gage
Bench Mark
Location BM
1979 to date
-
1979 to date
Fairly stable because of backwater effect.
Overbank flow starts at elevation +153.860 m.(MSL.), records are channel flow only.
Records good. Mae yom weir situated about 76 kilometers above gage site.
Stage-discharge relation defined by 76 discharge measurements made in 2011.
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
144.27
144.78
146.06
147.33
152.84
146.61
146.71
144.79
144.37
144.09
144.43
144.24
2
144.30
145.01
145.27
146.36
153.78
147.22
148.77
144.71
144.37
144.08
144.43
144.23
3
144.27
145.14
145.02
145.99
153.69
147.15
150.23
144.70
144.37
144.05
144.44
144.23
4
144.26
145.80
144.89
145.95
152.09
146.47
149.24
144.68
144.37
144.04
144.44
144.23
5
144.25
145.87
144.95
145.91
149.15
146.45
148.26
144.65
144.35
144.05
144.44
144.26
6
144.25
145.51
145.08
145.41
147.73
147.81
147.09
144.64
144.33
144.05
144.44
144.26
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Gage Height in Meter (MSL.) Water Year April 1, 2011 to March 31, 2012
7
144.28
145.56
147.16
145.12
147.15
148.27
146.50
144.61
144.30
144.05
144.45
144.25
8
144.26
145.53
147.24
144.94
147.90
148.25
146.20
144.60
144.28
144.08
144.44
144.25
9
144.35
145.10
145.74
144.89
147.84
148.39
146.09
144.62
144.26
144.11
144.43
144.25
10
144.41
145.11
145.22
145.00
147.41
148.31
146.00
144.57
144.28
144.09
144.42
144.20
11
144.31
148.01
144.95
145.12
149.16
148.16
145.96
144.64
144.28
144.07
144.42
144.25
12
144.26
149.40
144.83
145.72
152.48
147.33
145.80
144.59
144.26
144.08
144.43
144.27
13
144.24
146.49
144.76
145.46
153.21
147.42
145.71
144.54
144.25
144.08
144.42
144.45
14
144.23
145.54
144.69
145.12
151.08
148.41
145.67
144.52
144.25
144.09
144.41
144.46
15
144.22
145.40
144.60
145.41
148.62
148.35
145.54
144.51
144.23
144.10
144.38
144.45
16
144.22
145.21
144.54
148.75
147.71
148.26
145.61
144.52
144.17
144.10
144.40
144.45
17
144.28
145.35
144.52
150.05
147.49
147.61
146.07
144.56
144.12
144.07
144.41
144.44
18
144.38
146.08
144.50
148.41
148.35
146.99
146.09
144.56
144.11
144.08
144.39
144.54
19
144.35
146.56
144.55
147.17
148.35
146.47
145.74
144.51
144.10
144.07
144.47
144.56
20
144.28
146.99
144.49
146.47
149.99
146.83
145.48
144.48
144.08
144.05
144.40
144.53
21
144.25
147.14
144.40
146.23
149.99
147.70
145.28
144.47
144.07
144.05
144.40
144.42
22
144.19
145.80
144.38
146.07
150.73
147.47
145.17
144.47
144.07
144.07
144.39
144.39
23
144.16
145.28
144.33
146.04
149.33
147.19
145.09
144.48
144.05
144.19
144.36
144.37
24
144.56
145.01
144.28
145.92
148.07
147.08
144.99
144.45
144.05
144.27
144.31
144.30
25
144.82
144.69
144.40
146.02
147.49
146.75
144.92
144.44
144.06
144.29
144.27
144.29
26
144.87
145.21
147.37
146.64
147.19
146.34
144.85
144.44
144.07
144.36
144.31
144.26
27
144.90
145.41
151.19
145.85
148.03
146.77
144.81
144.43
144.06
144.41
144.29
144.25
28
144.69
145.08
152.43
145.48
148.76
146.99
144.80
144.41
144.05
144.39
144.29
144.24
29
144.67
144.97
152.83
145.56
148.39
148.19
144.74
144.41
144.03
144.42
144.24
144.21
30
144.64
145.61
150.33
145.48
147.23
147.56
144.74
144.41
144.04
144.42
144.21
31
146.44
148.20
146.70
144.78
144.03
144.43
144.20
----------
--------------
Mean
144.38
145.78
145.97
146.20
149.29
147.43
146.03
144.55
144.18
144.15
144.39
144.32
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Max
144.90
149.40
152.83
150.05
153.78
148.41
150.23
144.79
144.37
144.43
144.47
144.56
153.78
Min
144.16
144.69
144.28
144.89
146.70
146.34
144.74
144.41
144.03
144.04
144.24
144.20
144.03
154.02
m. (MSL.) ,
143.50
m. (MSL.) ,
River Bed 141.03
m. (MSL)
153.85
m. (MSL.) ,
153.85
m. (MSL.) ,
Drainage Area 7749 Square Kilometers
at 21.00 Hours , on Aug 2 , 2011
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Right Bank Elevation
Left Bank Elevation