Publications

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The magnitude of a flood of a selected frequency for any point in the two states may be determined by methods outlined in this report, with two limitations. These methods are not applicable for regulated streams or for small-drainage areas (in general, less than 100 square miles). The determination of the magnitude of a flood of a selected frequency in the two-state area is accomplished by the use

The chemical composition of natural water is derived from many different sources of solutes, including gases and aerosols from the atmosphere, weathering and erosion of rocks and soil, solution or precipitation reactions occurring below the land surface, and cultural effects resulting from activities of man. Some of the processes of solution or precipitation of minerals can be closely evaluated by

Major floods occurred in four areas in the United States during 1953: western Oregon and northwestern California, Louisiana and adjacent States, the Missouri River basin in Montana, and northwestern Iowa.Monetary loss from floods in 1953 was much lower than in any one of the preceding 3 years and was less than half the national annual average as computed by the Weather Bureau.