Basic HTML Version
324
Location : on right bank downstream of the bridge of Pong - Chiang Muan road.
1,981
sq.km.
Drainge Area
WATER YEAR : 2011
YOM RIVER BASIN
Yom River at Ban Thung Nong , Phayao (Y.31)
Lat 18 - 57 - 28 N Long 100 - 15 - 58 E
Amphoe
Chiang Muan
Changwat
Phayao
Ban
Thung Nong
Water - stage recorder
+257.000 m. (MSL.)
B.M.-H.D.
On right bank about 5 meters from the top staff gage.
Elevation
Recording
Arithmetic means of 24 readings
1983 to date
Rating Operation
Period of Available Gage Records
Location BM
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
+266.960 m. (MSL.)
Bench Mark
Type of Gage
1996 to date
-
1996 to date
Fairly stable.
No overbank flow.
Records fair. Flow effected by the islet about 200 meters dowmstream from the gage site.
Stage-discharge relation defined by 48 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
258.03
258.38
258.74
260.18
261.83
260.33
260.40
258.69
258.28
258.06
257.96
258.14
2
258.01
258.50
258.60
259.80
261.38
260.25
261.21
258.63
258.27
258.05
257.98
258.07
3
257.99
258.47
258.54
259.68
260.86
260.01
260.47
258.60
258.27
258.05
257.98
258.03
4
257.98
259.46
258.48
259.63
260.42
260.17
260.01
258.59
258.26
258.04
257.98
258.04
5
257.97
258.98
258.44
259.35
260.06
260.71
259.76
258.58
258.26
258.04
257.97
258.08
6
257.98
259.67
259.39
259.12
259.81
261.08
259.55
258.54
258.25
258.04
257.95
258.08
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Gage Height in Meter (MSL.) Water Year April 1, 2011 to March 31, 2012
7
257.98
258.92
259.92
259.01
259.79
261.06
259.42
258.53
258.24
258.04
257.94
258.07
8
257.96
258.50
258.94
258.92
260.16
260.70
259.40
258.52
258.23
258.03
257.93
258.08
9
257.96
258.31
258.65
258.87
259.96
260.59
259.42
258.53
258.22
258.02
257.92
258.08
10
258.00
260.32
258.51
258.90
260.12
260.71
259.57
258.56
258.20
258.02
257.92
258.15
11
258.02
260.15
258.44
259.85
262.08
260.28
259.48
258.50
258.18
258.02
257.92
258.23
12
258.04
258.94
258.37
259.53
262.30
260.10
259.33
258.47
258.18
258.02
257.92
258.12
13
258.19
258.52
258.35
259.20
261.31
260.12
259.15
258.45
258.16
258.02
257.91
258.09
14
258.09
258.47
258.32
259.50
260.87
260.04
259.07
258.44
258.15
258.02
257.90
258.25
15
258.05
258.55
258.30
262.20
260.61
259.92
259.15
258.43
258.14
258.03
257.89
258.28
16
258.03
258.46
258.26
261.91
260.32
259.83
259.81
258.42
258.14
258.04
257.88
258.24
17
258.01
258.87
258.21
261.34
260.56
259.73
259.77
258.41
258.13
258.02
257.87
258.20
18
257.99
259.02
258.21
260.79
260.57
259.80
259.41
258.40
258.11
258.01
257.87
258.16
19
257.97
259.37
258.22
260.39
260.25
260.32
259.19
258.38
258.10
258.02
257.96
258.10
20
257.94
259.63
258.21
260.31
261.17
260.50
259.04
258.37
258.10
258.02
258.11
258.09
21
257.93
258.82
258.18
260.09
261.84
260.48
258.97
258.36
258.08
258.01
258.12
258.08
22
257.93
258.54
258.17
260.34
261.21
260.58
258.92
258.36
258.09
258.01
258.12
258.08
23
258.06
258.42
258.17
260.06
260.91
260.40
258.86
258.36
258.08
258.00
258.12
258.06
24
258.05
258.33
258.16
260.40
260.65
260.29
258.80
258.35
258.06
257.98
258.11
258.05
25
258.71
258.97
258.26
260.78
260.43
259.98
258.75
258.33
258.06
257.96
258.13
258.05
26
258.32
258.61
261.33
260.00
260.50
259.78
258.76
258.33
258.06
257.95
258.13
258.03
27
258.30
258.49
263.57
259.60
261.03
259.79
258.72
258.31
258.07
257.96
258.13
258.01
28
258.20
258.43
262.65
259.81
261.13
259.85
258.70
258.30
258.08
257.95
258.14
258.00
29
258.10
258.89
261.41
259.76
260.44
259.78
258.75
258.29
258.07
257.95
258.15
257.98
30
258.12
260.25
260.70
259.34
260.27
259.64
258.74
258.29
258.08
257.95
257.98
31
259.33
260.05
260.15
258.84
258.07
257.95
257.98
----------
--------------
Mean
258.06
258.92
259.06
259.96
260.74
260.23
259.34
258.44
258.15
258.01
258.00
258.09
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Max
258.71
260.32
263.57
262.20
262.30
261.08
261.21
258.69
258.28
258.06
258.15
258.28
263.57
Min
257.93
258.31
258.16
258.87
259.79
259.64
258.70
258.29
258.06
257.95
257.87
257.98
257.87
263.90
m. (MSL.) ,
257.00
m. (MSL.) ,
River Bed 253.89
m. (MSL)
267.61
m. (MSL.) ,
267.29
m. (MSL.) ,
Drainage Area 1981 Square Kilometers
at 05.00 Hours , on Jun 27 , 2011
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Left Bank Elevation
Right Bank Elevation