Basic HTML Version
330
Location : on left bank at the bridge.
853
sq.km.
Amphoe
Pong
Changwat
Phayao
Ban
Pa Kha
WATER YEAR : 2011
YOM RIVER BASIN
Nam Khuan at Ban Pa Kha , Phayao (Y.36)
Lat 19 - 09 - 24 N Long 100 - 19 - 36 E
Drainge Area
Staff gage
+298.568 m. (MSL.)
B.M.-H.D.
On left bank about 20 meters from the abutment of the bridge.
Elevation
3-time daily readings at 06.00, 12.00 and 18.00 hours.
Arithmetic means of 3 readings
1998 to date
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
+307.764 m. (MSL.)
Type of Gage
Bench Mark
Location BM
Rating Operation
Period of Available Gage Records
1998 to date
-
1998 to date
Fairly stable.
No overbank flow.
Records good. Flow effected by the islet at the gage site.
Stage-discharge relation defined by 47 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
300.32
300.41
300.64
301.41
302.62
302.02
302.16
300.93
300.56
300.49
300.32
300.19
2
300.32
300.39
300.59
301.29
302.34
301.84
302.13
300.89
300.56
300.49
300.27
300.21
3
300.32
300.40
300.59
301.26
301.98
301.73
301.76
300.89
300.55
300.49
300.24
300.30
4
300.30
300.47
300.59
301.18
301.74
302.04
301.57
300.89
300.55
300.45
300.24
300.35
5
300.30
300.51
300.58
301.07
301.56
302.47
301.46
300.89
300.54
300.41
300.33
300.40
6
300.29
300.68
300.99
300.99
301.47
302.31
301.39
300.89
300.53
300.35
300.38
300.47
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Gage Height in Meter (MSL.) Water Year April 1, 2011 to March 31, 2012
7
300.29
300.64
301.08
300.96
301.49
302.23
301.35
300.87
300.52
300.35
300.38
300.49
8
300.29
300.48
300.76
300.84
301.94
302.05
301.29
300.87
300.49
300.34
300.39
300.49
9
300.30
300.46
300.67
300.79
301.44
302.17
301.29
300.86
300.46
300.34
300.39
300.46
10
300.37
300.46
300.66
300.79
301.77
302.02
301.29
300.77
300.44
300.34
300.39
300.46
11
300.36
300.75
300.56
301.25
303.12
301.86
301.29
300.74
300.43
300.37
300.38
300.44
12
300.38
300.61
300.49
301.02
302.69
301.85
301.26
300.73
300.39
300.37
300.37
300.46
13
300.38
300.44
300.49
300.97
302.23
301.73
301.16
300.69
300.33
300.39
300.37
300.53
14
300.37
300.36
300.49
301.72
301.96
301.68
301.14
300.69
300.28
300.37
300.35
300.58
15
300.37
300.41
300.43
302.84
301.87
301.59
301.19
300.69
300.25
300.35
300.26
300.57
16
300.37
300.39
300.34
302.79
301.68
301.57
301.47
300.69
300.34
300.34
300.19
300.59
17
300.32
300.43
300.34
302.35
301.95
301.48
301.23
300.69
300.41
300.33
300.19
300.59
18
300.31
300.52
300.32
301.99
301.74
301.55
301.09
300.66
300.39
300.31
300.19
300.59
19
300.29
300.59
300.29
301.75
301.58
301.74
301.09
300.64
300.39
300.30
300.19
300.57
20
300.30
300.66
300.29
301.56
302.40
301.69
301.09
300.64
300.39
300.31
300.19
300.57
21
300.27
300.45
300.29
301.44
302.76
301.69
301.09
300.59
300.40
300.39
300.19
300.53
22
300.27
300.37
300.29
301.39
302.47
301.84
301.08
300.59
300.41
300.39
300.19
300.52
23
300.29
300.32
300.29
301.35
302.16
301.68
301.03
300.59
300.43
300.39
300.19
300.50
24
300.30
300.31
300.31
301.91
302.03
301.72
300.99
300.59
300.44
300.39
300.19
300.49
25
300.42
300.40
300.41
301.62
301.89
301.58
300.99
300.59
300.46
300.39
300.19
300.49
26
300.41
300.74
303.78
301.42
301.86
301.45
300.97
300.59
300.50
300.39
300.19
300.48
27
300.39
300.76
304.04
301.29
302.43
301.53
300.96
300.58
300.49
300.39
300.19
300.48
28
300.37
300.80
304.10
301.29
302.16
301.51
300.96
300.58
300.49
300.39
300.19
300.48
29
300.37
300.90
302.75
301.28
301.85
301.44
300.96
300.57
300.49
300.39
300.19
300.47
30
300.36
300.90
301.71
301.23
302.13
301.36
300.99
300.56
300.49
300.39
300.47
31
300.80
301.28
301.89
300.99
300.49
300.39
300.47
----------
--------------
Mean
300.33
300.54
300.97
301.43
302.04
301.78
301.25
300.71
300.45
300.38
300.27
300.47
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Max
300.42
300.90
304.10
302.84
303.12
302.47
302.16
300.93
300.56
300.49
300.39
300.59
304.10
Min
300.27
300.31
300.29
300.79
301.44
301.36
300.96
300.56
300.25
300.30
300.19
300.19
300.19
305.38
m. (MSL.) ,
298.57
m. (MSL.) ,
River Bed 298.94
m. (MSL)
307.38
m. (MSL.) ,
307.40
m. (MSL.) ,
Drainage Area 853 Square Kilometers
at 20.00 Hours , on Jun 26 , 2011
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Right Bank Elevation
Left Bank Elevation