Basic HTML Version
304
Location : on left bank at the bridge on highway about 1.6 kilometers upstream from station Y.13
381
sq.km.
Amphoe
Ngao
Changwat
Lampang
Ban
Luang Nua
WATER YEAR : 2011
YOM RIVER BASIN
Nam Ngao at Ban Luang Nua , Lampang (Y.13A)
Lat 18 - 45 - 32 N Long 99 - 58 - 33 E
Drainge Area
Water - stage recorder
+268.300 m. (MSL.)
B.M.-H.D.
On left bank about 10 meters from the top staff gage.
Elevation
Recording
Arithmetic means of 24 readings
1988 - 1995, 2001 to date
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
+272.644 m. (MSL.)
Type of Gage
Bench Mark
Location BM
Rating Operation
Period of Available Gage Records
1988 - 1995, 2001 to date
-
1988 - 1995, 2001 to date
Stable.
No overbank flow.
Records good. 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
268.61
269.16
269.00
269.09
270.79
269.85
270.11
269.54
269.22
269.12
269.13
268.97
2
268.60
268.87
269.01
269.10
270.10
269.80
270.35
269.52
269.23
269.11
269.12
268.96
3
268.57
268.88
268.97
269.21
269.86
269.70
269.89
269.51
269.25
269.09
269.12
268.94
4
268.55
268.89
269.05
269.12
269.71
269.64
270.08
269.52
269.21
269.08
269.11
268.94
5
268.56
269.02
268.99
269.05
269.62
269.69
269.98
269.51
269.18
269.16
269.10
268.94
6
268.56
268.93
269.17
269.00
269.56
269.88
269.91
269.53
269.18
269.14
269.08
268.94
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Gage Height in Meter (MSL.) Water Year April 1, 2011 to March 31, 2012
7
268.55
268.94
269.12
268.97
269.56
269.99
269.93
269.51
269.21
269.14
269.05
268.95
8
268.57
268.87
269.05
268.94
269.50
269.83
269.90
269.48
269.24
269.12
268.97
268.90
9
268.58
268.81
269.00
269.15
269.60
269.82
269.79
269.48
269.23
269.12
268.95
268.85
10
268.58
270.06
268.99
269.14
269.57
269.84
269.80
269.48
269.23
269.10
268.95
268.84
11
268.58
269.65
268.97
269.13
270.01
269.73
269.78
269.39
269.23
269.07
268.94
268.90
12
268.71
269.22
268.95
269.05
269.88
269.97
269.79
269.30
269.21
269.11
268.93
268.96
13
268.77
269.18
268.92
268.98
269.77
270.29
269.77
269.28
269.19
269.12
268.97
268.99
14
268.72
269.25
268.88
268.98
269.62
270.08
269.75
269.29
269.18
269.11
268.96
269.01
15
268.69
269.22
268.87
269.40
269.58
269.97
269.75
269.28
269.18
269.09
268.94
269.03
16
268.63
269.26
268.88
269.35
269.54
269.88
269.75
269.26
269.19
269.12
268.93
269.02
17
268.59
269.18
268.87
269.11
269.67
269.84
269.76
269.24
269.18
269.12
269.00
269.00
18
268.62
269.18
268.88
269.04
269.65
269.83
269.80
269.21
269.18
269.09
269.03
269.00
19
268.62
269.67
268.86
269.02
269.92
269.84
269.77
269.24
269.18
269.06
268.98
269.00
20
268.60
269.62
268.83
269.09
270.04
270.11
269.72
269.28
269.10
269.07
268.97
268.93
21
268.59
269.28
268.83
269.03
270.21
270.01
269.71
269.26
269.10
269.08
268.98
268.90
22
268.59
269.18
268.80
268.98
269.99
269.93
269.71
269.26
269.09
269.07
268.97
268.91
23
268.62
269.11
268.80
268.99
269.85
269.93
269.68
269.27
269.08
269.08
268.99
268.93
24
268.78
269.08
268.79
268.97
269.99
269.92
269.67
269.28
269.12
269.09
268.97
268.95
25
269.07
269.05
268.94
268.98
269.89
269.83
269.67
269.26
269.13
269.09
268.97
268.92
26
268.99
269.05
270.02
268.97
269.94
269.80
269.65
269.21
269.10
269.10
268.96
268.90
27
268.92
269.02
269.68
268.93
269.99
269.83
269.63
269.18
269.12
269.10
268.96
268.89
28
268.97
269.01
269.57
268.96
269.87
269.87
269.62
269.17
269.11
269.10
268.98
268.91
29
268.85
269.00
269.27
268.98
269.76
269.88
269.60
269.21
269.11
269.13
268.98
268.91
30
268.80
269.02
269.15
268.93
269.76
269.92
269.58
269.21
269.11
269.13
268.93
31
269.00
269.35
269.74
269.55
269.13
269.13
268.94
----------
--------------
Mean
268.68
269.15
269.04
269.06
269.82
269.88
269.79
269.34
269.17
269.10
269.00
268.94
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Max
269.07
270.06
270.02
269.40
270.79
270.29
270.35
269.54
269.25
269.16
269.13
269.03
270.79
Min
268.55
268.81
268.79
268.93
269.50
269.64
269.55
269.17
269.08
269.06
268.93
268.84
268.55
271.19
m. (MSL.) ,
268.30
m. (MSL.) ,
River Bed 268.01
m. (MSL)
274.81
m. (MSL.) ,
274.81
m. (MSL.) ,
Drainage Area 381 Square Kilometers
at 10.00 Hours , on Aug 1 , 2011
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Right Bank Elevation
Left Bank Elevation