3. DRAINAGE BOUNDARY DEFINITION

4. HYMOS COMPONENTS HYMOS IS A COLLECTION OF MANY INDIVIDUAL COMPONENTS NETTER HYMOS ODS Server Graph Server Database Database Server User Interface: Database- Manager

5. Codification in HYMOS

6. 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

7. Equidistant time series data Station - j Type aa. Type ab. Type ba Time interval 1 Time interval 2 Time interval 3. Time interval j

8. Non-equidistant time series data Station - j Type pp. Type pq. Type qq

9. Directory Structure in HYMOS Hymos Programs & System Database Files DRIVE - XPATH...HYMOS4 ACCESS DATA BACKUP FIXED REPORTS SYSTEM UTILS DRIVE - y. DRIVE - z PATH...HYMOS DATABASESCAT1.DAT CAT2.DAT CAT3.DAT etc. SABARMATI.RAW DB MAPS PATH...XXX DIRECTORYBAS1.DAT BAS2.DAT BAS3.DAT etc.

10. 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

11. Non-equidistant time series code Station - j Type pp. Type pq. Type qq Station Code + Data Type Code SERIES CODE

12. 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

13. 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

14. Time interval & time label UnitCode Calendar Time YEAR MONTH DAY HOUR MINUTE 1 2 3 4 5

15. Time interval Time interval unit + Divider Time interval Time interval unit : YEAR MONTH DAY HOUR 1 2 3 4 Divider : 1 - 99 Examples : Yearly data1, 1 Daily data3, 1 8 Hourly data3, 3

16. Exercise - t ime interval Time intervals –Seasonal –Monthly –Decade (10 days) –Weekly –15 minute –10 minute –Half daily –3 hourly

17. Answers –Time intervals Unit, Divider Seasonal (4 seasons)1,4 Monthly2,1 or 1,12 Decade (10 days)2,3* Weekly 1,52* 15 minute4,4 10 minute4,6 Half daily3,2 3 hourly3,8

18. Basic time interval Basic time interval unit + Multiplier Basic time interval Basic time interval unit : Month Day Hour Minute 2 3 4 5 Multiplier : 1 - 99 Examples : Decade2, 3 Weekly1, 52 Pentad2, 6 3,10 3, 7 ?? Data T.IB.T.I

19. Cyclic Series - Unequal intervals/ Non-standard timings Cyclic Series Unequal time intervals E.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 ?? Data T.IB.T.I Non-standard timings E.g., Day’s observations at 0830 hrs.

20. Time Label Year>1850 + Month1-12 + Day1-28, 29, 30, 31 + Hour0-23 + Subdivision index 1-99 = Position inside time unit –I–If any of the above is not in use, then it is = 0

21. 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, 2 1985, 7, 0, 1 1980, 2, 1, 10, 1 1980, 2, 1, 10, 2 1985, 1, 7, 11, 4

22. Exercise - time interval & time label  T Basic  TTime label 4 seasons, 2nd season of 1991 June 1895 3rd Decade August 1956 6 - 10 May 1972 21 April 1947 1,40,01991,0,0,0,2 2,10,01895,6,0,0,1 2,33,101956,8,0,0,3 2,63,51972,5,0,0,2 3,10,0 1947,4,21,0,1

23. Exercise - time interval & time label  T Basic  TTime 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 4,60,0 1985,1,31,0,5 4,20,0 1967,3,5,18,2 4,600,0 1991,4,22,9,6 1,523,7 1980,0,0,0,14 4,40,0 1960,2,29,0,1