Page 374 - yearbook2011

Basic HTML Version

340
Location : on right bank at the bridge on road.
317
sq.km.
WATER YEAR : 2011
YOM RIVER BASIN
Nam Mae Ta at Ban Nam Rin , Phrae (Y.44)
Lat 18 - 09 - 32 N Long 99 - 56 - 35 E
Drainge Area
Amphoe
Long
Changwat
Phrae
Ban
Nam Rin
Water - stage recorder
+147.695 m. (MSL.)
B.M.-H.D.
Near automatic gage building
Elevation
Recording
Arithmetic means of 24 readings
2011 to date
Rating Operation
Period of Available Gage Records
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
+156.872 m. (MSL.)
Type of Gage
Bench Mark
Location BM
2011 to date
-
2011 to date
Fairly stable because of backwater effect.
No overbank flow.
Records fair. Stage-discharge relation defined by 29 discharge measurements made in 2011.
Remark
beginning on 1
st
May 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 *******
149.23
148.77
148.69
151.45
149.07
149.09
148.93
148.40
148.26
148.26
148.26
2 *******
148.83
148.65
148.65
150.82
149.16
149.57
148.87
148.40
148.26
148.26
148.26
3 *******
148.78
148.61
148.67
150.12
149.12
149.63
148.77
148.39
148.26
148.26
148.26
4 *******
148.73
148.70
148.93
149.44
149.06
149.29
148.74
148.38
148.26
148.26
148.26
5 *******
148.93
148.82
148.68
149.20
149.29
149.11
148.69
148.37
148.26
148.26
148.26
6 *******
148.71
149.40
148.57
149.12
149.26
149.02
148.64
148.36
148.26
148.26
148.26
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Gage Height in Meter (MSL.) Water Year April 1, 2011 to March 31, 2012
7 *******
148.73
149.12
148.56
149.21
149.32
148.99
148.58
148.35
148.26
148.26
148.26
8 *******
148.66
148.82
148.54
149.47
149.19
149.06
148.52
148.34
148.26
148.26
148.26
9 *******
149.13
148.78
148.53
149.36
149.33
149.12
148.51
148.33
148.26
148.26
148.26
10 *******
150.19
148.70
148.56
149.78
149.25
149.16
148.51
148.32
148.26
148.26
148.26
11 *******
149.48
148.63
148.77
150.91
149.16
149.17
148.50
148.32
148.26
148.26
148.26
12 *******
148.98
148.62
148.55
149.83
149.09
149.17
148.50
148.31
148.26
148.26
148.26
13 *******
148.75
148.60
148.59
149.44
149.31
149.16
148.49
148.30
148.26
148.26
148.26
14 *******
148.69
148.58
148.61
149.27
149.42
149.18
148.47
148.30
148.26
148.26
148.26
15 *******
148.65
148.56
148.79
149.18
149.48
149.22
148.45
148.29
148.26
148.26
148.26
16 *******
148.65
148.56
149.29
149.12
149.39
149.27
148.44
148.28
148.26
148.26
148.26
17 *******
148.91
148.59
148.86
149.41
149.24
149.24
148.43
148.28
148.26
148.26
148.26
18 *******
149.29
148.57
148.66
149.18
149.18
149.18
148.43
148.27
148.26
148.26
148.26
19 *******
148.92
148.50
148.67
149.13
149.18
149.16
148.43
148.27
148.26
148.26
148.26
20 *******
148.87
148.49
148.61
150.17
149.13
149.13
148.42
148.26
148.26
148.26
148.26
21 *******
148.82
148.48
148.61
150.03
149.10
149.11
148.42
148.26
148.26
148.26
148.26
22 *******
148.67
148.51
148.61
149.52
149.04
149.08
148.42
148.26
148.26
148.26
148.26
23 *******
148.61
148.53
148.66
149.30
149.20
149.05
148.42
148.26
148.26
148.26
148.26
24 *******
148.61
148.54
148.61
149.19
149.05
149.01
148.42
148.26
148.26
148.26
148.26
25 *******
148.61
148.55
148.83
149.22
149.01
149.00
148.41
148.26
148.26
148.26
148.26
26 *******
148.62
149.62
148.72
149.22
148.99
149.00
148.41
148.26
148.26
148.26
148.26
27 *******
148.61
149.51
148.59
149.32
149.00
148.99
148.41
148.26
148.26
148.26
148.26
28 *******
148.61
149.39
148.52
149.21
149.33
148.98
148.40
148.26
148.26
148.26
148.26
29 *******
148.61
148.97
148.50
149.12
149.66
148.97
148.40
148.26
148.26
148.26
148.26
30 *******
149.51
148.79
148.50
149.07
149.23
148.96
148.40
148.26
148.26
148.26
31
149.18
149.54
149.07
148.96
148.26
148.26
148.26
----------
--------------
Mean
*******
148.89
148.77
148.69
149.54
149.21
149.13
148.51
148.30
148.26
148.26
148.26
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Max
*******
150.19
149.62
149.54
151.45
149.66
149.63
148.93
148.40
148.26
148.26
148.26
151.45
Min
*******
148.61
148.48
148.50
149.07
148.99
148.96
148.40
148.26
148.26
148.26
148.26 *******
152.40
m. (MSL.) ,
147.70
m. (MSL.) ,
River Bed 147.79
m. (MSL)
155.66
m. (MSL.) ,
156.94
m. (MSL.) ,
Drainage Area 317 Square Kilometers
at 07.00 Hours , on Aug 1 , 2011
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Right Bank Elevation
Left Bank Elevation