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HYDROLOGY PROJECTTechnical Assistance
HYDROLOGY PROJECTTechnical Assistance
DRAINAGE BOUNDARY DEFINITION
HYDROLOGY PROJECTTechnical Assistance
HYMOS COMPONENTS
HYMOS IS A COLLECTION OF MANY INDIVIDUAL COMPONENTS
NETTER
HYMOS
ODS Server
Graph Server
Database
Database Server
User Interface: Database- Manager
HYDROLOGY PROJECTTechnical Assistance
Codification in HYMOS
HYDROLOGY PROJECTTechnical Assistance
General Data Structure in HYMOS
• Databases ……… Stations ……… Data
Catchment - b...
Catchment - j
Station a..
Station x..
Station y
Station Particulars/History
Time series data
Current metering data
Discharge rating data
Sediment rating data
Cross section data
Relation oriented data
HYDROLOGY PROJECTTechnical Assistance
Equidistant time series data
Station - j
Type aa..
Type ab..
Type ba
Time interval 1
Time interval 2
Time interval 3
.
.
Time interval j
HYDROLOGY PROJECTTechnical Assistance
Non-equidistant time series data
Station - j
Type pp..
Type pq..
Type qq
HYDROLOGY PROJECTTechnical Assistance
Directory Structure in HYMOS• Hymos Programs & System
• Database FilesDRIVE - X PATH ... HYMOS4
ACCESS DATABACKUPFIXEDREPORTSSYSTEM UTILS
DRIVE - y....DRIVE - z
PATH ... HYMOS DATABASES CAT1.DATCAT2.DATCAT3.DATetc.
SABARMATI.RAWDB MAPS
PATH ... XXX DIRECTORY BAS1.DATBAS2.DATBAS3.DATetc.
HYDROLOGY PROJECTTechnical Assistance
Equidistant time series code
Station - j
Type aa..
Type ab..
Type ba
Time interval 1
Time interval 2
Time interval 3
.
.
Time interval j
Station Code + Data Type Code + Time Interval Code
SERIES CODE
HYDROLOGY PROJECTTechnical Assistance
Non-equidistant time series code
Station - j
Type pp..
Type pq..
Type qq
Station Code + Data Type Code
SERIES CODE
HYDROLOGY PROJECTTechnical Assistance
Special time series codes
Station - j
Type AE (annual exceedances of fixed duration)
Type AM (monthly maximum rainfall amounts)
Station Code + Data Type Code
SERIES CODE
HYDROLOGY PROJECTTechnical Assistance
Codification
• STATION– Unique set of 1 to 12 characters to identify a station
– Also, the first part of time series code
• MEASUREMENT TYPE– Instantaneous
– Accumulative
– Constant
HYDROLOGY PROJECTTechnical Assistance
Time interval & time label
Unit Code
Calendar
Time
YEAR
MONTH
DAY
HOUR
MINUTE
1
2
3
4
5
HYDROLOGY PROJECTTechnical Assistance
Time interval
Time interval unit + DividerTime interval
Time interval unit : YEARMONTH
DAYHOUR
1234
Divider : 1 - 99
Examples : Yearly data 1, 1
Daily data 3, 1
8 Hourly data 3, 3
HYDROLOGY PROJECTTechnical Assistance
Exercise - time interval• Time intervals
– Seasonal
– Monthly
– Decade (10 days)
– Weekly
– 15 minute
– 10 minute
– Half daily
– 3 hourly
HYDROLOGY PROJECTTechnical Assistance
Answers– Time intervals Unit, Divider
• Seasonal (4 seasons) 1,4
• Monthly 2,1 or 1,12
• Decade (10 days) 2,3 *
• Weekly 1,52 *
• 15 minute 4,4
• 10 minute 4,6
• Half daily 3,2
• 3 hourly 3,8
HYDROLOGY PROJECTTechnical Assistance
Basic time interval
Basic time interval unit + Multiplier
Basic time interval
Basic time interval unit :
MonthDay
HourMinute
2345
Multiplier : 1 - 99
Examples :Decade 2, 3
Weekly 1, 52
Pentad 2, 6
3,10
3, 7
??
Data T.I B.T.I
HYDROLOGY PROJECTTechnical Assistance
Cyclic Series - Unequal intervals/Non-standard timings
Cyclic Series
Unequal time intervalsE.g., 3 observations a day at 0800, 1300, 1800 hrs.
Examples :0800, 1300, 1800 hrs. 3, 3
Daily at 0830 hrs. 3, 1
Twice Daily at 0830 & 1730 hrs. 3, 2
Cyclic
Cyclic
??
Data T.I B.T.I
Non-standard timingsE.g., Day’s observations at 0830 hrs.
HYDROLOGY PROJECTTechnical Assistance
Time Label
• Year >1850
+• Month 1-12
+• Day 1-28, 29, 30, 31
+• Hour 0-23
+• Subdivision index 1-99 = Position inside time unit
– If any of the above is not in use, then it is = 0
HYDROLOGY PROJECTTechnical Assistance
Examples - time label• 30 Jan 1989
• Decade 11-20 Feb. 76
• July 1985
• 1000 - 1030 hrs, 1/2/80
• 1030 - 1100 hrs, 1/2/80
• 1145 - 1200 hrs, 7/1/85
1989, 1, 30, 0, 1
1976, 2, 0, 0, 2
1985, 7, 0, 0, 1
1980, 2, 1, 10, 1
1980, 2, 1, 10, 2
1985, 1, 7, 11, 4
HYDROLOGY PROJECTTechnical Assistance
Exercise - time interval & time labelT Basic T Time label
• 4 seasons, 2nd season of 1991
• June 1895
• 3rd Decade August 1956
• 6 - 10 May 1972
• 21 April 1947
1,4 0,0 1991,0,0,0,2
2,1 0,0 1895,6,0,0,1
2,3 3,10 1956,8,0,0,3
2,6 3,5 1972,5,0,0,2
3,1 0,0 1947,4,21,0,1
HYDROLOGY PROJECTTechnical Assistance
Exercise - time interval & time labelT Basic T Time label
• 1600 - 2000 hrs. 31 Jan. 1985
• 1830 - 1900, 5 March 1967
• 0905 - 0906 hrs. 22 Apr. 1991
• 14th Week 1980
• 2400 h 28/2 - 0015 h. 29/2 1960
4,6 0,0 1985,1,31,0,5
4,2 0,0 1967,3,5,18,2
4,60 0,0 1991,4,22,9,6
1,52 3,7 1980,0,0,0,14
4,4 0,0 1960,2,29,0,1