LAR04: Modified Rational Method, F0601, Los Angeles Co.

(F0601) Los Angeles County Modified Rational Method LAR04 - Modified Rational Method, F0601, Los Angeles Co.

This program uses the Los Angeles County Flood Control District program source code for the F0601 series programs. It also includes an independent program module that assists the user in preparing an input data file for use by the F0601 program.

This program is used to perform storm run-off routing calculations and is designed to assist the engineer in designing or evaluating channels, retarding basins, flow-by basins, or computing and displaying the resultant hydrograph after routing it through a channel or combining the resulting hydrograph with another hydrograph.

The routing program uses flood hydrographs, either manually entered or created from the Unit Hydrograph programs. The hydrographs must be created, or entered, with a constant time interval. This interval may be as small as 1 minute, or as large as 60 minutes. The program does allow the mixing of hydrographs with different time intervals. The maximum size flood hydrograph is 1000 time intervals.