FLOOD06411 - Laserfiche WebLink

Home Browse Search

5. INPUT An example of program input is shown in Exhibit 3. as is a description of the required input in Exhibit 5; Exhibit 6 follows, which visually summarizes the form of the input data for the program. All input is by card, using 8 card columns per variable and 10 variables per card unless fewer variables are called for; four title cards are used. All data are input using two digit code entered in card columns 1 and 2. If code is blank, program will interpret that card to have the same code as the previous card. Data can be input in any order. For rating curves. the last value of the last parameter input must not be 0, For period-by-period information, the last input value of the last parameter must not be zero. Rating curves may be input using either stage or elevations, not both. Period-by-period information for the river can be input as flow, stage or elevation. The first jOb requires four cards of titling information, a Jl card defining DELTA (time interval in minutes), ponding area rating curve of elevation (stage) vs. capacity, ponding area inflow hydrograph, and river hydrograph (flow, stage or elevation). For subsequent jobs, all cards are optional except the end-of-job card. The end-of-job is indicated by one of three cards: ED, NJ. ZZ, The ZZ card is used if the present job is the last job, The NJ card is used to re-initialize all variables to zero before the next job is initiated, An ED card is used to separate jobs when the next job uses the same information as the present one, only changes need be inserted (all rating curves and hydrographs remain the same unless changed by input). When period-by-period data for the river is input, data constant on a card can be entered by putting the value in field 1 and a (-1) in field 10, All output variables for each period as well as job specification information are stored on Tape 1. Summary information for each job is stored on Tape 2 or Tape 6 depending upon the value of "IPRNT" (Jl-9), The program will automatically plot certain stage and discharge hydrographs or the user can specify what is to be plotted. A blank GP card will suppress all plot. Any combination of Tl. T2, T3, T4 cards can be used. Any study period longer than 150 periods can be broken up and treated as a continuous run by specifying a positive value for the variable LINKe. An ED card must separate every 150 values (or less) of period-by-period information. Tape 5 must be specified as the input unit, This unit is read and rewound twice, Thus, control cards may have to be separated from input 3