DEVELOPMENT OF HYDROLOGICAL INFORMATION SYSTEM UNDER HYDROLOGY PROJECT

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(No Transcript)
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DRAINAGE BOUNDARY DEFINITION
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HYMOS COMPONENTS

• HYMOS IS A COLLECTION OF MANY INDIVIDUAL
  COMPONENTS

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Codification in HYMOS
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General Data Structure in HYMOS

• Databases Stations Data

Catchment - b . . . Catchment - j
Station Particulars/History Time series
data Current metering data Discharge rating
data Sediment rating data Cross section
data Relation oriented data
Station a . .
Station x . .
Station y
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Equidistant time series data
Station - j
Time interval 1 Time interval 2 Time interval
3 . . Time interval j
Type aa . .
Type ab . .
Type ba
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Non-equidistant time series data
Station - j
Type pp . .
Type pq . .
Type qq
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Directory Structure in HYMOS

• Hymos Programs System
• Database Files

ACCESS DATA BACKUP FIXED REPORTS SYSTEM UTILS
DRIVE - X
PATH ...
HYMOS4
DRIVE - y . . . . DRIVE - z
PATH ...
HYMOS DATABASES
CAT1.DAT CAT2.DAT CAT3.DAT etc.
PATH ...
XXX DIRECTORY
BAS1.DAT BAS2.DAT BAS3.DAT etc.
DB MAPS
SABARMATI.RAW
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Equidistant time series code
Time interval 1 Time interval 2 Time interval
3 . . Time interval j
Type aa . .
Station - j
Type ab . .
Type ba
Station Code Data Type Code Time
Interval Code
SERIES CODE
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Non-equidistant time series code
Type pp . .
Station - j
Type pq . .
Type qq
Station Code Data Type Code
SERIES CODE
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Special time series codes
Type AE (annual exceedances of fixed
duration) Type AM (monthly maximum
rainfall amounts)
Station - j
Station Code Data Type Code
SERIES CODE
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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

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Time interval time label
Unit
Code
Calendar
YEAR
1
MONTH
2
DAY
3
Time
HOUR
4
MINUTE
5
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Time interval
Time interval
Time interval unit Divider
Time interval unit
YEAR
1
MONTH
2
DAY
3
HOUR
4
Divider
1 - 99
Examples
Yearly data
1, 1
Daily data
3, 1
8 Hourly data
3, 3
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Exercise - time interval

• Time intervals
• Seasonal
• Monthly
• Decade (10 days)
• Weekly
• 15 minute
• 10 minute
• Half daily
• 3 hourly

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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

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Basic time interval
Basic time interval
Basic time interval unit Multiplier
Basic time interval unit
Month
2
Day
3
Hour
4
Minute
5
Multiplier
1 - 99
Examples
Data
T.I B.T.I
3,10
Decade
2, 3
3, 7
Weekly
1, 52
??
Pentad
2, 6
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Cyclic Series - Unequal intervals/Non-standard
timings
Unequal time intervals E.g., 3 observations a day
at 0800, 1300, 1800 hrs.
Cyclic Series
Non-standard timings E.g., Days observations at
0830 hrs.
Examples
Data
T.I B.T.I
3, 3
Cyclic
0800, 1300, 1800 hrs.
Cyclic
3, 1
Daily at 0830 hrs.
Twice Daily at 0830 1730 hrs.
3, 2
??
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Time Label

• Year gt1850
• 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

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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
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Exercise - time interval time label
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 1
972,5,0,0,2 3,1 0,0 1947,4,21,0,1

• ?T Basic ?T Time label
• 4 seasons, 2nd season of 1991
• June 1895
• 3rd Decade August 1956
• 6 - 10 May 1972
• 21 April 1947

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Exercise - time interval time label

• 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

• ?T 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