To accomplish these tasks, the USGS has over 150 field offices where personnel are involved in the following activities:
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Collecting water samples from ground- and surface-water bodies
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| Making measurements of water properties, such as pH and temperature
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| Measuring stream flows and the amount of water in wells
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| Analyzing water samples in the field and in laboratories
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| Compiling data from many sources about how much water is used for different purposes
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| Writing reports about our water resources
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| Creating many computerized water data bases
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| Producing maps, reports, and other output (such as the screen you're looking at now!) to give the public and others information about our water resources
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| Keeping the U.S. Congress and the President informed about water-resource issues
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