Basic HTML Version
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WATER YEAR : 2013
WEST COAST - GULF BASIN
Khlong Yai at Ban Chang Laek , Prachuap Khiri Khan (Gt.11)
Lat 11 - 03 - 44 N Long 99 - 22 - 30 E
Locat on : on r g t an at t e r ge o P et Kasem H g way near t e gu epost 423.
61
sq.km.
Staff gage
+36.375 m. (MSL.)
B.M.- Highways Dept.
On right 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.
Amphoe
Bang Saphan Noi
Changwat
Prachuap Khiri Khan
Ban
Chang Laek
Gage Reading Frequency
Zero Gage at Bottom
+45.340 m. (MSL.)
Type of Gage
Bench Mark
Location BM
Drainge Area
Arithmetic mean of 5 readings
1979 to date
1980 to date
-
1980 to date
Stable.
No overbank flow.
Basis of Mean Daily Gage Height
Rated by Current Meter
Stability of Channel Regimes
Overbank Flow Conditions
Rating Operation
Period of Rating
Rated by Flot
Period of Available Gage Records
Records good. Stage-discharge relation defined by 23 discharge measurements made in 2013.
Date
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Annual
----------
-----------------
1
37.06
37.18
37.11
37.12
37.22
37.13
37.30
37.25
37.38
37.05
36.99
36.97
2
37.06
37.16
37.13
37.12
37.21
37.13
37.28
37.24
37.35
37.05
36.99
36.97
3
37.06
37.15
37.12
37.12
37.21
37.13
37.28
37.23
37.33
37.05
36.99
36.97
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Gage Height in Meter (MSL.) Water Year April 1, 2013 to March 31, 2014
General Description
4
37.07
37.14
37.11
37.12
37.20
37.12
37.26
37.23
37.32
37.05
36.99
36.97
5
37.08
37.13
37.11
37.12
37.20
37.12
37.25
37.22
37.31
37.05
36.99
36.96
6
37.08
37.13
37.13
37.12
37.22
37.13
37.40
37.21
37.30
37.05
36.99
36.96
7
37.08
37.13
37.14
37.12
37.21
37.25
37.65
37.21
37.30
37.04
36.98
36.96
8
37.08
37.13
37.13
37.13
37.20
37.24
37.37
37.24
37.28
37.04
36.98
36.96
9
37.08
37.13
37.11
37.14
37.20
37.23
37.37
37.24
37.28
37.05
36.98
36.95
10
37.08
37.13
37.11
37.14
37.20
37.23
37.37
37.24
37.27
37.05
36.98
36.95
11
37.08
37.12
37.11
37.14
37.26
37.19
37.37
37.22
37.26
37.05
36.98
36.95
12
37 08
37 13
37 12
37 14
37 25
37 20
37 34
37 20
37 24
37 05
36 97
36 95
.
.
.
.
.
.
.
.
.
.
.
.
13
37.18
37.13
37.13
37.14
37.24
37.23
37.33
37.19
37.23
37.05
36.97
36.95
14
37.33
37.13
37.14
37.13
37.23
37.22
37.33
37.18
37.23
37.04
36.97
36.95
15
37.45
37.16
37.15
37.13
37.22
37.22
37.32
37.18
37.22
37.04
36.97
36.94
16
37.33
37.17
37.15
37.13
37.20
37.21
37.32
37.26
37.20
37.03
36.97
36.94
17
37.24
37.20
37.15
37.12
37.18
37.20
37.31
37.79
37.18
37.03
36.97
36.94
18
37.16
37.17
37.15
37.12
37.18
37.18
37.31
37.62
37.17
37.02
36.96
36.94
19
37.10
37.20
37.15
37.13
37.17
37.24
37.31
37.37
37.16
37.01
36.96
36.94
20
37.07
37.17
37.15
37.14
37.16
37.45
37.31
37.34
37.13
37.01
36.96
36.94
21
37.06
37.15
37.15
37.15
37.14
37.52
37.28
37.33
37.11
37.01
36.96
36.94
22
37.06
37.15
37.16
37.17
37.14
37.80
37.28
37.38
37.11
37.01
36.96
36.94
23
37.06
37.14
37.16
37.19
37.14
37.66
37.27
38.53
37.10
37.00
36.96
36.95
24
37.06
37.14
37.16
37.23
37.14
37.69
37.26
38.65
37.10
37.00
36.96
37.11
25
37.06
37.14
37.16
37.26
37.13
37.66
37.26
38.32
37.09
37.00
36.96
37.12
26
37.06
37.14
37.15
37.26
37.13
37.59
37.25
37.97
37.08
37.00
36.97
37.06
27
37.08
37.14
37.15
37.24
37.13
37.52
37.25
37.56
37.08
36.99
36.97
37.05
28
37.15
37.13
37.13
37.22
37.13
37.43
37.25
37.50
37.07
36.99
36.97
37.05
29
37.14
37.12
37.13
37.19
37.14
37.35
37.26
37.47
37.07
36.99
37.04
30
37.13
37.12
37.12
37.20
37.14
37.33
37.26
37.41
37.07
36.99
37.04
31
37.11
37.22
37.13
37.25
37.06
36.99
37.03
----------
--------------
Mean
37.12
37.14
37.14
37.16
37.18
37.32
37.31
37.46
37.20
37.03
36.97
36.98
Max
37.45
37.20
37.16
37.26
37.26
37.80
37.65
38.65
37.38
37.05
36.99
37.12
38.65
Min
37.06
37.11
37.11
37.12
37.13
37.12
37.25
37.18
37.06
36.99
36.96
36.94
36.94
39.09
m. (MSL.) ,
36.38
m. (MSL.) ,
River Bed 36.84
m. (MSL.)
44.70
m. (MSL.) ,
43.42
m. (MSL.) ,
Drainage Area
61
Square Kilometers
at 20.00 Hours , on Nov 23, 2013
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Right Bank Elevation
Left Bank Elevation
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