Basic HTML Version
618
Location : on left bank at the bridge of Phet Kasem Highway near the guidepost 373.
61
sq.km.
WATER YEAR : 2011
WEST COAST - GULF BASIN
Khlong Ang Thong at Ban Ang Thong , Prachuap Khiri Khan (Gt.19)
Lat 11 - 26 - 10 N Long 99 - 33 - 54 E
Amphoe
Thap Sakae
Changwat
Prachuap Khiri Khan
Ban
Ang Thong
Drainge Area
Staff gage
+12.447 m. (MSL.)
B.M.-H.D.
On left bank at the abutment of the bridge.
Elevation
5-time daily readings at 06.00, 09.00, 12.00, 15.00 and 18.00 hours.
Arithmetic means of 5 readings
1987 to date
+17.784 m. (MSL.)
Bench Mark
Type of Gage
Rating Operation
Period of Available Gage Records
Location BM
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
1987 - 1988, 1993 to date
-
1987 - 1988, 1993 to date
Stable.
No overbank flow.
Records good. Stage-discharge relation defined by 39 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
13.10
12.99
12.75
13.13
13.41
13.24
13.28
13.30
13.22
13.19
13.20
13.26
2
13.10
12.97
12.78
13.20
13.43
13.24
13.27
13.30
13.22
13.20
13.24
13.25
3
13.10
12.96
12.78
13.34
13.40
13.25
13.26
13.29
13.21
13.24
13.28
13.25
4
13.10
12.95
12.77
13.30
13.38
13.25
13.26
13.29
13.21
13.27
13.27
13.25
5
13.10
12.93
12.76
13.29
13.36
13.25
13.25
13.29
13.21
13.27
13.27
13.25
6
13.10
12.92
12.76
13.32
13.33
13.26
13.25
13.28
13.21
13.25
13.27
13.24
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Gage Height in Meter (MSL.) Water Year April 1, 2011 to March 31, 2012
7
13.10
12.92
12.75
13.31
13.30
13.26
13.26
13.28
13.20
13.25
13.27
13.24
8
13.10
12.91
12.75
13.30
13.26
13.26
13.29
13.28
13.25
13.24
13.27
13.24
9
13.10
12.93
12.75
13.30
13.23
13.25
13.29
13.27
13.50
13.23
13.26
13.23
10
13.10
12.95
12.76
13.29
13.23
13.25
13.28
13.27
13.48
13.23
13.26
13.23
11
13.10
12.94
12.76
13.28
13.22
13.27
13.29
13.27
13.43
13.23
13.25
13.23
12
13.10
12.92
12.76
13.28
13.25
13.29
13.31
13.27
13.43
13.23
13.25
13.25
13
13.10
12.92
12.81
13.28
13.25
13.29
13.35
13.31
13.42
13.23
13.25
13.25
14
13.10
12.92
12.81
13.28
13.25
13.29
13.33
13.47
13.41
13.23
13.25
13.25
15
13.10
12.93
12.81
13.27
13.24
13.28
13.32
13.40
13.37
13.23
13.25
13.24
16
13.10
12.93
12.83
13.27
13.23
13.28
13.32
13.38
13.33
13.23
13.24
13.24
17
13.10
12.93
12.87
13.26
13.21
13.28
13.31
13.37
13.32
13.23
13.24
13.24
18
13.10
12.94
12.90
13.25
13.21
13.29
13.30
13.33
13.30
13.23
13.24
13.24
19
13.10
12.94
12.95
13.24
13.20
13.29
13.29
13.32
13.27
13.23
13.24
13.23
20
13.10
12.93
13.28
13.24
13.20
13.29
13.27
13.31
13.25
13.22
13.27
13.23
21
13.10
12.92
13.22
13.24
13.27
13.30
13.27
13.31
13.25
13.20
13.30
13.22
22
13.10
12.92
13.17
13.24
13.27
13.30
13.27
13.30
13.24
13.20
13.29
13.22
23
13.10
12.91
13.16
13.24
13.27
13.30
13.26
13.29
13.24
13.19
13.29
13.22
24
13.10
12.90
13.15
13.25
13.26
13.30
13.27
13.29
13.23
13.18
13.29
13.22
25
13.10
12.89
13.14
13.28
13.26
13.30
13.28
13.29
13.23
13.18
13.29
13.22
26
13.10
12.88
13.13
13.28
13.26
13.30
13.28
13.26
13.22
13.17
13.28
13.19
27
13.10
12.81
13.11
13.28
13.25
13.31
13.29
13.25
13.21
13.17
13.27
13.16
28
13.10
12.75
13.11
13.29
13.25
13.30
13.33
13.24
13.21
13.17
13.27
13.12
29
13.10
12.75
13.12
13.29
13.26
13.29
13.30
13.23
13.20
13.16
13.26
13.10
30
13.10
12.75
13.16
13.31
13.25
13.29
13.30
13.23
13.20
13.15
13.10
31
12.76
13.34
13.25
13.29
13.19
13.16
13.10
----------
--------------
Mean
13.10
12.90
12.93
13.27
13.27
13.28
13.29
13.30
13.28
13.21
13.26
13.22
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Max
13.10
12.99
13.28
13.34
13.43
13.31
13.35
13.47
13.50
13.27
13.30
13.26
13.50
Min
13.10
12.75
12.75
13.13
13.20
13.24
13.25
13.23
13.19
13.15
13.20
13.10
12.75
13.53
m. (MSL.) ,
12.45
m. (MSL.) ,
River Bed 12.89
m. (MSL)
16.87
m. (MSL.) ,
16.58
m. (MSL.) ,
Drainage Area
61
Square Kilometers
at 12.00 Hours , on Dec 9 , 2011
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Left Bank Elevation
Right Bank Elevation