I could develop CWCFF1 computerized mathematical flood forecasting model while I was working for  calibrating of foreign acquired models. Development of  CWCFF1 was not an assigned work to me. I just did it during some spare time.  CWCFF1 model was based on new routing theory that I could invent in a just 10 minutes while I was analyzing stored actual data. Later, I demonstrated it to my senior officer. I was also able to develop PEM-FF and CWC Unit Graph models. Not only the scientific part, but also the complete software were designed by a lone person like me. But to get excellent reports from my senior officers and to manage my posting at the main office at Delhi, I have to write the paper for these models with their names on the first places.