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Speech given by Leopold at the National Water Conference, Sheraton-Park Hotel, Washington, D.C., December 8-9, 1965.

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Authors: Luna B. Leopold and Walter B. Langbein. Abstract: The striking geometric regularity of a winding river is no accident. Meanders appear to be the form in which a river does the least work in turning; hence they are the most probable form a river will take. Originally published: Scientific American ; v. 214, no. 6 (June 1966), p. 60-70.

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Typescript authorized for publication by the Director, U.S. Geological Survey.

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Authors: LUna B. Leopold and Herbert E. Skibitzke. Abstract: An analysis of data on hydraulic parameters collected during a single boat trip down a river system is presented, plotted in form of the hydraulic geometry. A dimensionless rating curve is used to estimate bankfull and average discharge for basins of various sizes. Originally published: Geografiska annaler ; v. 49, Ser. A (1967), 2-4.

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Abstract: This circular attempts to summarize existing knowledge of the effects of urbanization on hydrologic factors. It also attempts to express this knowledge in terms that the planner can use to test alternatives during the planning process. It also serves as a report on the basic hydrologic conditions of the Brandywine Creek basin, Pennsylvania, prior to the beginning of major urbanization.

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Abstract: A preliminary attempt to quantify some elements of aesthetic appeal of a landscape while eliminating, insofar as possible, value judgments or personal preferences.

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Abstract: Extending the analysis of branching patterns of the drainage net of rivers, originated by Horton, the relation of average numbers and lengths of tree branches to size of branch was investigated. It was found that, as in river drainage nets, there is a definite logarithmic relation between branch order and lengths and numbers. Originally published: Journal of theoretical biology ; v. 31, pt. 2 (1971).

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Authors: Luna B. Leopold and William W. Emmett. Abstract: Summarizes three sets of measurement data on certain processes: rate of movement of soil on hillslopes, especially by mass movement or slow gravitational creep; downslope creep measured in modified Young Pits; and, changes in the channel width of a small perennial stream. Originally published: Geographia polonica ; 23 (1972).

Scope and Contents Abstract: Monumented channel cross sections were resurveyed over a period of 20 years (1953 to 1972) to determine the amount and kind of change of channel area and position on a 3.7-square mile basin, Watts Branch near Rockville, Maryland. Despite a trend toward increasing cross-sectional area, the net result after 20 years was a channel smaller by 20 percent than it had been originally. Urbanization did not alter the rate of channel migration. Originally published: ...

Scope and Contents Authors: Luna B. Leopold and William W. Emmett. Abstract: A bedload trap in the riverbed provided direct quantitative measurement of debris-transport rate in the East Fork River, Wyoming, a basin of 466 km( drainage area. Traction load moves only during the spring snow melt season. Data collected in three spring runoff seasons showed that transport rate is correlated with power expenditure of the flowing water and at high flows becomes directly proportional to power as suggested by Bagnold....