Page 272 - Slide 1

238
Location : on left bank at Ban Sop Win.
389 sq.km.
WATER YEAR : 2012
PING RIVER BASIN
Nam Mae Wang at Ban Sop Win , Chiang Mai (P.82)
Lat 18 - 39 - 06 N Long 98 - 41 - 23 E
Amphoe Mae Wang Changwat Chiang Mai Ban Sop Win
Drainge Area
Water - stage recorder
+400.196 m. (MSL.)
B.M.-H.D.
On left bank about 5.00 meters from the top staff gage. Elevation
Recording.
Arithmetic mean of 24 readings
2003 to date
Bench Mark
Location BM
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
Type of Gage
+406.756 m. (MSL.)
Rating Operation
Period of Available Gage Records
2003 to date
-
2003 to date
Rather unstable by some scouring.
No overbank flow.
Records fair. Stage-discharge relation defined by 44 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
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1 401.11 401.05 401.20 401.21 401.21 401.25 401.72 401.33 401.27 401.18 401.16 401.05
2 401.12 401.07 401.17 401.18 401.19 401.32 401.59 401.32 401.26 401.16 401.17 401.05
3 401.15 401.05 401.15 401.16 401.21 401.43 401.50 401.31 401.25 401.16 401.17 401.06
4 401.21 401.09 401.14 401.16 401.23 401.35 401.57 401.31 401.25 401.16 401.14 401.10
5 401.27 401.26 401.14 401.25 401.21 401.33 401.49 401.34 401.24 401.15 401.14 401.28
6 401.18 401.29 401.42 401.35 401.21 401.32 401.58 401.31 401.24 401.15 401.13 401.17
Gage Height in Meter (MSL.) Water Year April 1, 2012 to March 31, 2013
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
7 401.20 401.63 401.17 401.36 401.20 402.56 401.51 401.31 401.21 401.15 401.11 401.13
8 401.22 401.51 401.21 401.42 401.18 402.39 401.44 401.32 401.22 401.14 401.10 401.18
9 401.20 401.38 401.27 401.55 401.25 401.90 401.45 401.30 401.17 401.14 401.09 401.17
10 401.20 401.35 401.26 401.45 401.33 401.68 401.42 401.29 401.17 401.14 401.09 401.11
11 401.17 401.21 401.18 401.29 401.28 401.74 401.39 401.27 401.21 401.14 401.09 401.10
12 401.14 401.17 401.16 401.22 401.23 401.62 401.46 401.25 401.21 401.13 401.09 401.08
13 401.13 401.15 401.15 401.24 401.22 401.52 401.47 401.32 401.21 401.13 401.09 401.08
14 401.13 401.14 401.14 401.26 401.20 401.66 401.45 401.34 401.20 401.12 401.09 401.05
15 401.13 401.14 401.14 401.19 401.19 402.03 401.42 401.31 401.20 401.12 401.09 401.05
16 401.13 401.16 401.13 401.20 401.21 401.88 401.39 401.30 401.20 401.12 401.09 401.05
17 401.13 401.15 401.13 401.18 401.21 401.93 401.37 401.28 401.20 401.13 401.09 401.05
18 401.10 401.16 401.16 401.20 401.20 401.64 401.38 401.28 401.20 401.12 401.09 401.05
19 401.07 401.18 401.15 401.20 401.19 401.55 401.36 401.28 401.19 401.13 401.09 401.05
20 401.09 401.22 401.14 401.20 401.21 401.51 401.34 401.29 401.19 401.12 401.09 401.05
21 401.10 401.20 401.22 401.20 401.23 401.55 401.34 401.31 401.19 401.12 401.09 401.05
22 401.10 401.15 401.18 401.19 401.35 401.55 401.34 401.31 401.19 401.12 401.09 401.05
23 401.08 401.13 401.17 401.18 401.39 401.53 401.33 401.28 401.18 401.12 401.09 401.05
24 401.07 401.14 401.15 401.28 401.16 401.51 401.32 401.27 401.18 401.12 401.09 401.04
25 401.06 401.16 401.14 401.59 401.17 401.53 401.32 401.27 401.18 401.12 401.09 401.04
26 401.05 401.23 401.14 401.33 401.50 401.59 401.32 401.29 401.18 401.11 401.09 401.04
27 401.05 401.26 401.13 401.27 401.35 401.47 401.32 401.31 401.18 401.10 401.09 401.04
28 401.04 401.20 401.12 401.28 401.36 401.60 401.32 401.29 401.18 401.10 401.08 401.04
29 401.04 401.17 401.16 401.30 401.37 401.71 401.31 401.27 401.18 401.11 401.04
30 401.04 401.21 401.27 401.25 401.40 401.65 401.31 401.28 401.18 401.15 401.04
31 401.30 401.23 401.34 401.31 401.18 401.17 401.04
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Mean 401.12 401.21 401.18 401.27 401.26 401.64 401.41 401.30 401.20 401.13 401.10 401.08
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Max 401.27 401.63 401.42 401.59 401.50 402.56 401.72 401.34 401.27 401.18 401.17 401.28 402.56
Min 401.04 401.05 401.12 401.16 401.16 401.25 401.31 401.25 401.17 401.10 401.08 401.04 401.04
402.98 m. (MSL.) ,
400.20 m. (MSL.) , River Bed 400.79 m. (MSL.)
405.99 m. (MSL.) ,
406.21 m. (MSL.) , Drainage Area 389 Square Kilometers
at 18.00 Hours , on Sep 7 , 2012 Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Left Bank Elevation
Right Bank Elevation