Flood is defined as an overflow of a large amount of water beyond its normal limits, especially over what is normally dry land. The aim of this research was to assess ecosystem-based adaptation in flood risk management in upper Suswa- Magadi catchment. Descriptive research design will be applied for the study. The target population of the study area was 8094 households. Purposive sampling and stratified random sampling methods was used to select three locations of Upper Suswa-Magadi catchment. These included Suswa, Keekonyokie and Mosiro. The locations had a population of 8,094 households, from which a sample size of 370 was obtained. The questionnaires, key informants interview and observations were used to collect data. SPSS tool was used in the analysis of the data. The study concluded that; the respondents in the study area are aware about the impacts floods on environment in the area. Some of the effects include land deterioration damage of the landscape, loss of biodiversity and destruction of roads and infrastructure.