The collection consists of correspondence; technical reports on various aspects of irrigation; reports and surveys of specific irrigation projects throughout California, and in Colorado, Idaho, Montana, Nevada, and North Dakota; and miscellaneous material relating to water costs and requirements, water rights, groundwater and surface water supply, flood control, legislation, dendroclimatology, enclosed lakes, and the Central Valley Project and Feather River Project in California.

Sidney Twichell Harding was born on October 20, 1883, in Brookfield, Massachusetts. After a boyhood spent in Texas and Kansas, he graduated from the University of Michigan in 1905 with a degree in civil engineering.

16.67 linear feet (40 boxes)

Copyright has not been assigned to the University of California, Riverside Libraries, Special Collections & University Archives. Distribution or reproduction of materials protected by copyright beyond that allowed by fair use requires the written permission of the copyright owners. To the extent other restrictions apply, permission for distribution or reproduction from the applicable rights holder is also required. Responsibility for obtaining permissions, and for any use rests exclusively with the user.

The collection is open for research.