Basic HTML Version
318
Location : on left bank at the bridge on highway.
336
sq.km.
WATER YEAR : 2012
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
Amphoe
Mueang
Changwat
Phrae
Ban
Mae Lai
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 mean of 24 readings
1996 to date
Rating Operation
Period of Available Gage Records
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
+167.293 m. (MSL.)
Type of Gage
Bench Mark
Location BM
1996 to date
-
1996 to date
Fairly stable.
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 2012.
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
159.15
159.17
159.33
159.22
159.38
159.54
159.39
159.30
159.22
159.22
159.25
159.22
2
159.15
159.17
159.46
159.24
159.37
159.42
159.47
159.28
159.22
159.22
159.25
159.22
3
159.15
159.17
159.34
159.24
159.37
159.50
159.51
159.27
159.22
159.20
159.25
159.22
4
159.15
159.17
159.34
159.25
159.35
159.47
159.58
159.27
159.22
159.20
159.25
159.21
5
159.15
159.17
159.30
159.32
159.32
159.51
159.45
159.27
159.22
159.20
159.25
159.17
6
159.16
159.17
159.27
159.32
159.32
159.58
159.54
159.21
159.22
159.20
159.25
159.17
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Gage Height in Meter (MSL.) Water Year April 1, 2012 to March 31, 2013
7
159.17
159.29
159.27
159.30
159.32
159.64
159.56
158.36
159.22
159.20
159.25
159.17
8
159.17
159.34
159.27
159.30
159.32
159.63
159.46
158.32
159.22
159.20
159.25
159.19
9
159.19
159.39
159.27
159.27
159.45
159.83
159.40
158.32
159.22
159.20
159.25
159.21
10
159.22
158.69
159.27
159.27
159.47
159.68
159.36
158.32
159.22
159.20
159.25
159.21
11
159.02
158.62
159.27
159.27
159.47
159.82
159.35
158.32
159.22
159.20
159.25
159.21
12
159.19
158.16
159.27
159.27
159.39
159.60
159.36
158.88
159.22
159.21
159.25
159.21
13
159.17
157.28
159.27
159.27
159.33
159.54
159.34
159.27
159.22
159.22
159.25
159.21
14
159.17
157.27
159.27
159.27
159.30
159.52
159.32
159.27
159.22
159.22
159.25
159.21
15
159.17
157.27
159.27
159.27
159.30
159.55
159.34
159.23
159.22
159.22
159.25
159.21
16
159.17
157.48
159.27
159.27
159.30
159.45
159.32
159.22
159.22
159.22
159.25
159.22
17
159.17
158.96
159.27
159.27
159.32
159.42
159.30
159.20
159.22
159.22
159.25
159.22
18
159.17
159.18
159.22
159.28
159.32
159.38
159.30
159.20
159.22
159.22
159.25
159.22
19
159.17
159.26
159.22
159.32
159.32
159.41
159.30
159.22
159.22
159.22
159.25
159.22
20
159.17
159.46
159.22
159.32
159.34
159.37
159.30
159.22
159.22
159.22
159.24
159.22
21
159.17
159.36
159.24
159.32
159.89
159.36
159.30
159.22
159.22
159.22
159.22
159.22
22
159.17
159.31
159.24
159.30
159.58
159.35
159.30
159.22
159.22
159.22
159.22
159.22
23
159.17
159.25
159.22
159.30
159.57
159.34
159.30
159.22
159.22
159.22
159.22
159.22
24
159.17
159.27
159.24
159.62
159.56
159.32
159.30
159.22
159.22
159.22
159.22
159.22
25
159.17
159.32
159.24
160.00
159.48
159.32
159.30
159.22
159.22
159.22
159.22
159.17
26
159.17
159.28
159.24
159.69
159.52
159.32
159.30
159.26
159.22
159.22
159.22
159.17
27
159.17
159.32
159.24
159.53
159.80
159.34
159.30
159.25
159.22
159.22
159.22
159.17
28
159.17
159.32
159.24
159.47
159.87
159.34
159.29
159.25
159.22
159.22
159.22
159.17
29
159.17
159.30
159.24
159.46
159.88
159.35
159.29
159.25
159.22
159.22
159.17
30
159.17
159.34
159.22
159.43
159.87
159.33
159.29
159.24
159.22
159.22
159.17
31
159.35
159.45
159.58
159.29
159.22
159.25
159.17
----------
--------------
Mean
159.16
158.94
159.27
159.36
159.47
159.47
159.36
159.08
159.22
159.21
159.24
159.20
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Max
159.22
159.46
159.46
160.00
159.89
159.83
159.58
159.30
159.22
159.25
159.25
159.22
160.00
Min
159.02
157.27
159.22
159.22
159.30
159.32
159.29
158.32
159.22
159.20
159.22
159.17
157.27
160.23
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 02.00 Hours , on Jul 25 , 2012
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Right Bank Elevation
Left Bank Elevation