Basic HTML Version
328
Location : on left bank at the bridge on highway.
336
sq.km.
Amphoe
Mueang
Changwat
Phrae
Ban
Mae Lai
WATER YEAR : 2011
YOM RIVER BASIN
Nam Mae Lai at Ban Mae Lai , Phrae (Y.34)
Lat 18 - 12 - 59 N Long 100 - 12 - 36 E
Drainge Area
Water - stage recorder
+157.270 m. (MSL.)
B.M.-H.D.
On left bank about 10 meters from the top staff gage.
Elevation
Recording
Arithmetic means of 24 readings
1996 to date
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
+167.293 m. (MSL.)
Type of Gage
Bench Mark
Location BM
Rating Operation
Period of Available Gage Records
1996 to date
-
1996 to date
Fairly stable because of bakwater effect.
No overbank flow.
Records fair. Flow effected by the temporary weir about 300 meters dowmstream from the gage site.
Stage-discharge relation defined by 46 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
159.21
159.20
159.19
159.31
160.44
159.40
159.39
159.25
159.21
159.20
159.18
159.17
2
159.21
159.20
159.19
159.34
159.95
159.67
159.50
159.23
159.21
159.20
159.18
159.17
3
159.21
159.26
159.20
159.37
159.82
159.57
159.59
159.24
159.21
159.20
159.18
159.17
4
159.20
159.23
159.27
159.38
159.63
159.47
159.50
159.25
159.21
159.20
159.18
159.17
5
159.21
159.27
159.27
159.34
159.48
159.48
159.45
159.19
159.21
159.20
159.20
159.17
6
159.21
159.25
159.29
159.32
159.50
159.78
159.44
159.09
159.21
159.20
159.20
159.17
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Gage Height in Meter (MSL.) Water Year April 1, 2011 to March 31, 2012
7
159.21
159.22
159.28
159.31
159.54
159.76
159.39
159.15
159.21
159.20
159.20
159.17
8
159.21
159.23
159.27
159.30
159.91
159.71
159.37
159.25
159.20
159.20
159.20
159.17
9
159.21
159.23
159.26
159.30
159.67
159.66
159.37
159.22
159.20
159.20
159.19
159.17
10
159.22
159.26
159.25
159.30
159.53
159.63
159.34
159.24
159.20
159.20
159.19
159.17
11
159.18
159.42
159.23
159.29
160.00
159.59
159.32
159.34
159.20
159.20
159.19
159.17
12
159.19
159.30
159.23
159.30
159.87
159.56
159.31
159.26
159.20
159.20
159.19
159.17
13
159.19
159.26
159.21
159.29
159.67
159.71
159.38
159.25
159.20
159.20
159.19
159.21
14
159.19
159.24
159.19
159.29
159.58
159.78
159.38
159.24
159.20
159.20
159.19
159.27
15
159.19
159.23
159.19
159.32
159.53
159.76
159.36
159.24
159.20
159.20
159.18
159.27
16
159.19
159.23
159.20
159.37
159.50
159.64
159.47
159.24
159.20
159.20
159.19
159.27
17
159.18
159.23
159.21
159.30
159.45
159.55
159.38
159.23
159.20
159.20
159.17
159.27
18
159.19
159.24
159.21
159.30
159.55
159.44
159.37
159.23
159.20
159.19
159.17
159.27
19
159.19
159.24
159.27
159.29
159.45
159.39
159.35
159.22
159.20
159.19
159.17
159.27
20
159.19
159.24
159.26
159.30
159.53
159.43
159.31
159.22
159.20
159.19
159.17
159.27
21
159.19
159.24
159.22
159.31
159.50
159.48
159.27
159.22
159.20
159.20
159.17
159.27
22
159.18
159.23
159.22
159.30
159.49
159.43
159.27
159.22
159.20
159.20
159.17
159.27
23
159.18
159.22
159.21
159.31
159.45
159.39
159.27
159.22
159.20
159.20
159.17
159.22
24
159.21
159.22
159.21
159.32
159.41
159.45
159.27
159.22
159.20
159.20
159.17
159.22
25
159.26
159.21
159.30
159.36
159.39
159.37
159.27
159.22
159.20
159.20
159.17
159.22
26
159.24
159.19
160.00
159.33
159.42
159.37
159.25
159.22
159.20
159.20
159.17
159.17
27
159.21
159.20
159.65
159.31
159.81
159.38
159.21
159.22
159.20
159.20
159.17
159.17
28
159.20
159.22
159.43
159.31
159.61
159.41
159.17
159.22
159.20
159.19
159.17
159.17
29
159.20
159.20
159.27
159.31
159.49
159.37
159.18
159.21
159.20
159.19
159.17
159.15
30
159.22
159.20
159.25
159.30
159.44
159.40
159.25
159.21
159.20
159.19
159.15
31
159.19
160.28
159.42
159.25
159.20
159.19
159.15
----------
--------------
Mean
159.20
159.24
159.28
159.35
159.61
159.53
159.34
159.23
159.20
159.20
159.18
159.20
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Max
159.26
159.42
160.00
160.28
160.44
159.78
159.59
159.34
159.21
159.20
159.20
159.27
160.44
Min
159.18
159.19
159.19
159.29
159.39
159.37
159.17
159.09
159.20
159.19
159.17
159.15
159.09
161.13
m. (MSL.) ,
157.27
m. (MSL.) ,
River Bed 158.24
m. (MSL)
167.47
m. (MSL.) ,
167.46
m. (MSL.) ,
Drainage Area 336 Square Kilometers
at 20.00 Hours , on Jul 31 , 2011
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Right Bank Elevation
Left Bank Elevation