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<br />POND 010 FLOOD ROUTING OF 25 YEAR 24 HOUR STORM THROUGH EMERGENCY SPILLWAY <br />SCS TR-20 RUN 07/28/1999 <br />TR20 XEq 07-28-99 08:39 <br />REV PC 09/83(.2) <br />FILE NO. 3 <br />COMPUTER PROGRAM FOR PROJECT FORMULATION - HYDROLOGY USER NOTES <br /> <br />JOB 1 PASS 1 <br />PAGE 1 <br />THE USERS MANUAL FOR THIS PROGRAM IS THE MAY 1983 DRAFT OF TR-20. CHANGES FROM THE 2/14/74 VERSION INCLUDE: <br />REACH ROUTING - THE MODIFIED ATT-KIN ROUTING PROCEDURE REPLACES THE CONVEX METHOD. INPUT DATA PREPARED FOR <br />PREVIOUS PROGRAM VERSIONS USING CONVEX ROUTING COEFFICIENTS WILL NOT RUN ON THIS VERSION. <br />THE PREFERRED TYPE OF DATA ENTRY IS CRO55 SECTION DATA REPRESENTATIVE OF A REACH. IT IS RECOMMENDED THAT <br />THE OPTIONAL CROSS SECTION DISCHARGE-AREA PLOTS BE OBTAINED WHENEVER NEW CROSS SECTION DATA IS ENTERED. <br />THE PLOTS SHOULD BE CHECKED FOR REASONABLENESS AND ADEQUACY OF INPUT DATA FOR T'HE COMPUTATION OF "M" <br />VALUES USED IN THE ROUTING PROCEDURE. <br />GUIDELINES FOR DETERMINING OR ANALYZING REACH LENGTHS AND COEFFICIENTS (X, M) ARE AVAILABLE IN THE USERS <br />MANUAL. SUMMARY TABLE 2 DISPLAYS REACH ROUTING RESULTS AND ROUTING PARAMETERS FOR COMPARISON AND CHECKING. <br />HYDROGRAPH GENERATION - THE PROCEDURE TO CALCULATE THE INTERNAL TIME INCREMENT AND PEAK TIME OF THE UNIT <br />HYDROGRAPH HAVE BEEN IMPROVED. PEAK DISCHARGES AND TIMES MAY DIFFER FROM THE PREVIOUS VERSION. OUTPUT <br />NYDROGRAPHS ARE STILL INTERPOLATED, PRINTED, AND ROUTED AT THE USER SELECTED MAIN TIME INCREMENT. <br />INTERMEDIATE PEAKS - METHOD ADDED TO PROVIDE DISCHARGES AT INTERMEDIATE POINTS WITHIN REACHES WITHOUT ROUTING. <br />OTHER - THIS VERSION CONTAINS SOME ADDITIONS TO THE INPUT AND NUMEROUS MODIFICATIONS TO THE OUTPUT. USER <br />OPTIONS HAVE BEEN MODIFIED AND AUGMENTED ON THE SOB RECORD, RAINTABLES ADDED, ERROR AND WARNING MESSAGES <br />EXPANDED, AND THE SUMMARY TABLES COMPLETELY REVISED. THE HOLDOUT OPTION IS NOT OPERATIONAL AT THIS TIME. <br />(Revised 12/00) Attachment 2.05.3(3) -10-42 <br />