FLOOD06411 - Laserfiche WebLink

Home Browse Search

INTERIOR DRAINAGE FLOOD ROUTING HYDROLOGIC ENGINEERING CENTER COMPUTER PROGRAM 23-J2-L279 1. ORIGIN OF PROGRAM This program was prepared in The Hydrologic Engineering Center. Corps of Engineers. 609 Second Street. Davis, California 95616, by William J. Brick. Mr. Brick. of the San Francisco District. wrote this program for San Francisco personnel during a training program at The Hydrologic Engineering Center. Several minor revisions were made thereafter. In March 1977. Robert Carl (Special Assistance Branch of The Hydrologic Engineering Center) completely restructured the program input, added a plot routine and summary tables, and enhanced the program's computational capability. Features added include the calculation of overflow or diversion discharge from the ponding area and separate elevations for pump-on and pump-off calculations. Up-to- date information and copies of source statement cards may be obtained from the Center upon request by Government and cooperating agencies. 2. PURPOSE OF PROGRAM a. This program, written in Fortran IV, is designed to route floods through interior drainage ponding areas to adjacent rivers or estuaries. The program uses river elevation data. ponding area elevation- area-capacity data. and theponding area inflow from surface runoff, as we.ll as the following input options to route floods through interior ponding areas: (1) Ponding area inflow from seepage. e.g" through or under 1 evees . (a) Seepage may be given in the form of a hydrograph, as is the inflow from interior runoff. . (b) Seepage may be computed internally, based upon the river-ponding area head differential for each routing period and a known (input) head vs. seepage relationship. (2) Pumping capabilities over or through the impounding levees. (a) Pumping may be done at a constant rate, with pumps turning on and off when a specified ponding area water surface elevation is reached.