Water body extraction is the theoretical foundation of water resource and flood disaster monitoring.

利用遥感数据提取水体，是水资源和洪涝灾害监测的重要手段及其理论基础。

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Water is the base of living things on Earth. Water extraction is important to the water resources investigation, the forecasting and evaluating of flood disaster and environmental monitoring.

水是地球上万物的命脉所在，水体提取对于水资源调查、洪水灾害预测评估和环境监测等有着重要作用。

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Flood monitoring and assessment is an important part of flood control and disaster mitigation, while GIS is one of the most important technical supports.

洪涝灾害监测评估是抗洪减灾中一个重要组成部分，GIS则是最主要的技术支撑之一。

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The satellite will have a number of viewing modes that will enable it to perform a wide range of roles, from flood monitoring and land cover classification to disaster mapping and maritime enforcement - notably ship tracking and oil spill detection.

BBC: Surrey to start making radar satellites

Those should be made available to all the provinces and districts for active response as well as to National Disaster Management Authority for policy formulation and strategic guidance and to Federal Flood Commission for monitoring of flood infrastructure.

UNESCO: NATURAL SCIENCES