Basic HTML Version
306
Location : on left bank about 1 kilometer downstream from Sop Ngao.
5,394
sq.km.
WATER YEAR : 2012
YOM RIVER BASIN
Yom River at Ban Huai Sak , Phrae (Y.20)
Lat 18 - 35 - 06 N Long 100 - 09 - 16 E
Drainge Area
Amphoe
Song
Changwat
Phrae
Ban
Huai Sak
Water - stage recorder
+181.000 m. (MSL.)
B.M.-H.D.
Near the automatic gage building.
Elevation
Recording
Arithmetic mean of 24 readings
1971 to date
Rating Operation
Period of Available Gage Records
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
+193.552 m. (MSL.)
Type of Gage
Bench Mark
Location BM
1972 to date
-
1972 to date
Fairly stable because of backwater effect.
No overbank flow.
Records good. Mae yom weir situated about 15 kilometers above site.
Stage-discharge relation defined by 45 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
181.77
182.19
182.86
181.97
182.74
183.37
184.03
183.05
182.87
182.03
182.21
181.83
2
181.76
182.05
182.69
181.98
182.66
183.25
184.19
182.70
182.60
182.01
182.25
181.82
3
181.81
182.00
183.15
181.98
182.65
184.16
183.66
182.57
182.73
181.98
182.14
181.80
4
181.86
182.00
183.24
182.27
183.07
185.22
183.52
182.61
182.63
181.97
182.12
181.82
5
181.87
181.94
182.83
182.97
182.79
186.51
183.93
182.69
182.48
181.96
182.09
181.87
6
181.86
182.10
183.52
184.08
182.65
185.30
184.19
182.80
182.40
181.95
182.04
181.96
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Gage Height in Meter (MSL.) Water Year April 1, 2012 to March 31, 2013
7
182.13
183.41
183.16
183.31
182.57
185.67
185.48
182.79
182.35
181.97
182.01
181.95
8
182.28
184.13
183.26
182.79
182.51
185.53
184.15
182.68
182.32
181.96
181.97
181.95
9
182.27
183.52
183.36
182.56
183.54
185.39
183.58
182.53
182.23
181.96
181.94
182.04
10
182.35
183.52
184.20
182.52
186.35
185.79
183.30
182.47
182.26
181.96
181.91
181.91
11
182.28
183.01
183.60
182.61
185.27
185.27
183.14
182.44
182.25
181.95
181.89
181.88
12
182.11
182.51
183.07
182.45
184.38
184.48
183.01
182.42
182.22
181.95
181.87
181.86
13
182.02
182.33
182.80
182.29
183.79
184.07
182.97
182.40
182.21
181.93
181.86
181.83
14
181.97
182.22
182.60
182.32
183.38
185.25
183.02
182.55
182.20
181.92
181.85
181.75
15
181.94
182.15
182.44
182.29
183.20
187.57
182.89
182.85
182.19
181.93
181.83
181.73
16
181.90
182.11
182.37
182.32
183.38
185.96
182.83
182.54
182.18
181.94
181.82
181.72
17
181.89
182.37
182.33
182.28
183.19
184.57
182.77
182.43
182.17
181.93
181.80
181.72
18
181.86
182.80
182.27
182.20
183.09
183.97
182.91
182.38
182.14
181.93
181.83
181.72
19
181.84
182.35
182.22
182.43
183.03
183.62
182.86
182.37
182.12
181.93
181.81
181.73
20
181.86
182.24
182.20
182.51
182.92
183.47
182.78
182.37
182.12
181.91
181.82
181.73
21
181.90
182.19
182.16
182.35
183.97
183.85
182.68
182.34
182.09
181.91
181.87
181.71
22
181.86
182.20
182.15
182.28
184.99
183.57
182.67
182.36
182.08
181.89
181.89
181.71
23
181.81
182.19
182.13
182.33
183.87
183.34
182.84
182.36
182.09
181.89
181.99
181.69
24
181.79
182.46
182.11
183.40
183.54
183.32
182.92
182.33
182.08
181.87
182.01
181.68
25
181.80
182.54
182.15
186.96
184.68
183.16
182.73
182.40
182.07
181.87
181.98
181.68
26
181.81
182.84
182.17
185.69
184.73
183.25
182.62
182.40
182.07
181.88
181.95
181.69
27
181.78
185.22
182.11
183.94
184.20
183.81
182.60
182.40
182.07
181.88
181.93
181.69
28
182.08
185.76
182.08
183.35
184.38
184.65
182.56
182.47
182.07
181.88
181.89
181.67
29
182.24
184.40
182.01
183.25
184.09
184.98
182.51
183.64
182.06
181.87
181.66
30
182.13
183.65
182.00
183.10
183.96
184.71
182.47
183.57
182.05
181.89
181.66
31
183.13
182.88
183.75
182.68
182.04
182.02
181.65
----------
--------------
Mean
181.96
182.82
182.64
182.89
183.66
184.57
183.18
182.60
182.24
181.93
181.95
181.78
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Max
182.35
185.76
184.20
186.96
186.35
187.57
185.48
183.64
182.87
182.03
182.25
182.04
187.57
Min
181.76
181.94
182.00
181.97
182.51
183.16
182.47
182.33
182.04
181.87
181.80
181.65
181.65
187.92
m. (MSL.) ,
181.00
m. (MSL.) ,
River Bed 179.46
m. (MSL.)
193.51
m. (MSL.) ,
193.64
m. (MSL.) ,
Drainage Area 5394 Square Kilometers
at 14.00 Hours , on Sep 15 , 2012
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Right Bank Elevation
Left Bank Elevation