A study was carried out in Sirajganj district, to explore the causes of flooding and to determine the impact of flood hazards on human life and environment. Data were collected from 300 respondents from 5 upazilas, using interview schedule during July to August, 2013. From the collected data it is found that lack of communication, food, drinking water, health services, high environmental degradation and high socio-economic losses were ubiquitous nearly characteristics. Majority (44.3%) of the respondents were old aged. Almost (41%) of the respondents were illiterate. Average member of the family was 2.233. Majority (31.3%) was involved in agriculture and maximum number of respondents (44.7%) had small monthly income. The highest respondent said that main causes of flood were climate changes (40%). About (45.3%) used tube well water, (28.7%) faced lack of communication problem, (34%) faced diarrhea as the major disease and got medical support (39.7%). The losses from flood are crop (32%), land (29%), domestic animal (20%) and houses (19%). They had faced high (45%) environmental degradation and 44% high socio-economic loss. The computed value of correlation coefficient showed that positive relationship between sex of the respondents and losses of flood was insignificant. The variables as included were age, education, occupation, monthly income, family members, causes, problem face and diseases has positive relationship with losses of flood was significant.