WSPC03595

• File Number: 8283.200
• Description: Colorado River Basin-Colorado River Computer Models-Colorado River Decision Support System
• State: CO
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 9/30/1994
• Author: Hydrosphere
• Title: Hydrosphere Gunnison Model-Data Dictionary-Operations Code Overview-Model Solution Procedure and Sequence of Calls to Specific Procedures Flowcharts-Model Input Files-Gunnison Specific Computer Codes
• Water Supply Pro - Doc Type: Report/Study

.1. .....~,tan~ ~ ! ~
I \ ~

Data Dictionary

~ ~\\ " 't
. \-'

return tlow occurs, the source number of the return tlow. the percentage of the source
returning at that location, and the return !low fraction number. The source and return !low
fraction numbers refer to the RTNSOURCE and RTNFRACTS records applicable to that
return tlow.

RTFL

67

246 23

33 67: 50% Upper Fruitland Ditch Demand

(A comment may be added to the end of a record if preceded by J colon, as above.)

In the example given, return !low number 67 is specitied as entering the model network
at node 246, as utilizing the source information contained in RTNSOURCE record number 23,
as comprising 33% of the return !low from that source. and as utilizing the lagging fractions
contained in RTNFRACTS record number 67.

RTNSOURCE

The RTNSOURCE record describes the source ti-om which a return tlow emanates. The
tirst tield in the RTNSOURCE record contains the record type specitication ('RTNSOURCE'),
and the following tields, in order. contain the source number. record type of the source, the
number of the record type, and the 12 monthly consumptive use percentages of the source.

.
RTNSOURCE

23

DEMN

23

30 30 30 30 30 30 30 30 30 30 30 30

In the example given, return tlow source number 23 is specitied as being demand
number 23. This demand has a constant 30 percent consumptive use.

RTNFRACTS

The RTNFRACTS record identities the immediate return tlows and provides the
percentages of lagged return tlows that occur in a given month. The tirst tield in the
RTNFRACTS record contains the type specitication ('RTNFRACTS '), and the following
Ilelds, in order, contain the return tlow fraction table number. the percentage of the return
tlow that returns in the same time period (or immediate return tlow percentage), and 12 Ilelds
containing the monthly lagged return !low percentages.

RTNFRACTS

67

40 50 33

17 0

o

o

o 0

o

o

o

o

In the example given, return !low fraction table number 67 shows that 40% of the return
!lows occur immediately. in the diversion month. Of the remaining 60%,50% returns one
month later, 33% two months later, and the remaining 17% four months later.

Data File

The LINK records in BASEL2.DA T are used to provide link capacity information. The
Ilrst Ileld in the LINK record contains the record type ('LINK'). The following tields contain,
in order, the link number to which the capacity applies and the 12 seasonal values of link
capacity.

LINK

o

o

o

o

o

o

o

o

o

o

o

o

6