The Central Valley Project - Federal or State?

University of California, Berkeley (UC Berkeley) | June 1st, 1955

The evolution of human population distance to water in the USA from 1790 to 2010

Nature Portfolio (Springer Nature) | January 25th, 2019

Human societies evolved alongside rivers, but how has the relationship between human settlement locations and water resources evolved over time? We conducted a dynamic 

Human societies evolved alongside rivers, but how has the relationship between human settlement locations and water resources evolved over time? We conducted a dynamic analysis in the conterminous US to assess the coevolution of humans and water resources from 1790 to 2010. Here we show that humans moved closer to major rivers in pre-industrial periods but have moved farther from major rivers after 1870, demonstrating the dynamics of human reliance on rivers for trade and transport. We show that humans were preferentially attracted to areas overlying major aquifers since industrialization due to the emergent accessibility of groundwater in the 20th century. Regional heterogeneity resulted in diverse trajectories of settlement proximity to major rivers, with the attractiveness of rivers increasing in arid regions and decreasing in humid areas. Our results reveal a historical coevolution of human-water systems, which could inform water management and contribute to societal adaptation to future climate change.

The Evolution of the Urban Infrastructure in the Nineteenth and Twentieth Centuries

National Academy of Sciences (NAS) | December 3rd, 1984

This chapter* discusses the origins and development of the urban capital infrastructure in the United States since 1790. Urban infrastructure is defined as the "sinews"

This chapter* discusses the origins and development of the urban capital infrastructure in the United States since 1790. Urban infrastructure is defined as the "sinews" of the city: its road, bridge, and transit networks; its water and sewer lines and waste disposal facilities; its power systems; its public buildings; and its parks and recreation areas.1 In developing an analysis, the chapter draws on history in three ways: to furnish perspectives on the evolution of the urban infrastructure over time; to point to critical stages, paradigm shifts, and key turning points in history; and to provide analogies between the contemporary so-called crisis of the infrastructure and similar events in the past (see Stearns and Tarr, 1982). The chapter is structured around questions concerning the demand for public works; the factors affecting their supply; the character of the provider (public, public-private, or private); and the relationship of urban infrastructure to financial, political, technological, spatial, public health, social, and demographic considerations. *Chapter 1, Perspectives on Urban Infrastructure, edited by Royce Hanson, National Academy Press, 1984

The Extraordinary California Drought of 2013/2014: Character, Context, and The Role of Climate Change

American Meteorological Society (AMS) | September 30th, 2014

Nearly the entire state of California experienced extremely dry conditions during 2013 (Fig. 2.1a). Statewide, 12-month accumulated precipitation was less than 34% of

Nearly the entire state of California experienced extremely dry conditions during 2013 (Fig. 2.1a). Statewide, 12-month accumulated precipitation was less than 34% of average (Fig. 2.1b), leading to a wide range of impacts. In early 2014, state and federal water agencies announced that agricultural water users in the Central Valley would receive no irrigation water during 2014 (DWR 2014; USBR 2014), and that a number of smaller communities throughout California could run out of water entirely within a 90-day window (USDA 2014a). Low rainfall, unusually warm temperatures, and stable atmospheric conditions affected the health of fisheries and other ecosystems (CDFW 2014), created highly unusual mid-winter wildfire risk (CAL FIRE 2014), and caused exceptionally poor air quality (BAAQMD 2014). Such impacts ultimately resulted in the declaration of a state-level “drought emergency” and the federal designation of all 58 California counties as “natural disaster areas” (USDA 2014b). *From Explaining Extreme Events of 2013 from a Climate Perspective, Bull. Amer. Meteor. Soc., 95 (9), S1–S96.

The Federal-Tribal Trust Relationship: Its origin, nature, and scope

California Department of Water Resources (DWR) | January 1st, 2009

The Geysers of California

Scientific American | September 28th, 1867

The Geysers of California are situated in lateral ravines of Pluton River, a tributary of Russian River. In gaining a clear idea of the California Geysers, it will be n

The Geysers of California are situated in lateral ravines of Pluton River, a tributary of Russian River. In gaining a clear idea of the California Geysers, it will be necessary to forget the geysers of Iceland, with their columns of water and capitals of cloud. Upon approaching those upon Pluton River, your first impression is that there has been a great conflagration, and that the fire engines are blowing off steam preparatory to going home. The gorge is lined with masses of smouldering ashes, from which hot steam is being drifted, by the wind, and, in some places, you can imagine that the embers are ready to relight. In the bottom of the canon, turbid and blackened water, from which vapor slowly lifts, is running among the discolored rocks. Here and there, escaping steam hisses, and, in some places, roars like the "exhaust " of an engine.

The Great Thirst: Californians and Water, 1770s to 1990s

University of California Press | July 15th, 2001

The obsession with water has shaped California to a remarkable extent, literally as well as politically and culturally. Hundley tells how aboriginal Americans and then ea

The obsession with water has shaped California to a remarkable extent, literally as well as politically and culturally. Hundley tells how aboriginal Americans and then early Spanish and Mexican immigrants contrived to use and share the available water and how American settlers, arriving in ever-increasing numbers after the Gold Rush, transformed California into the home of the nation's preeminent water seekers. The desire to use, profit from, manipulate, and control water drives the people and events in this fascinating narrative until, by the end of the twentieth century, a large, colorful cast of characters and communities has wheeled and dealed, built, diverted, and connived its way to an entirely different statewide waterscape.

The Historical Ecology of the Tijuana Estuary & River Valley (Restore America's Estuaries 2018 Conference Presentation)

San Francisco Estuary Institute (SFEI) | December 12th, 2018

This talk was given at the 2018 Restore America's Estuary Conference in Long Beach, CA as part of a special session titled "Restoration Perspectives from the Tijuana Rive

This talk was given at the 2018 Restore America's Estuary Conference in Long Beach, CA as part of a special session titled "Restoration Perspectives from the Tijuana River National Estuarine Research Reserve." It is based on information from the Tijuana River Valley Historical Ecology Investigation, a report published in 2017. Though many areas of the binational Tijuana River watershed remain relatively undeveloped, land and water use changes over the past 200 years have resulted in significant ecological impacts, particularly in the more urbanized areas of the lower watershed. Drawing upon a diverse set of historical data, we reconstructed the ecological and hydrogeomorphic conditions of the lower Tijuana River valley prior to major Euro-American modification (ca. 1850) and documented major changes in habitat distribution and physical processes over this time. The river corridor, which was historically dominated by riparian scrub, today instead supports dense stands of riparian forest. The valley bottom surrounding the river corridor, which historically supported extensive seasonal wetlands, has largely been converted to drier habitat types and agricultural uses. The estuary, which historically supported large expanses of salt marsh and mudflat as well as seasonally dry salt flats, has retained much of its former extent and character, but has been altered by increased sediment input and other factors. The new information about the historical landscape presented here is relevant to a number of issues scientists and managers are dealing with today, including the conservation of endangered species, the fate of the valley’s riparian habitats after the recent invasion of invasive shot-hole borer beetles, and the effects on groundwater levels on native plant communities. We will also draw from other historical ecology studies conducted in Southern California to illustrate how the information about the past has been utilized to improve the functioning and resilience of nearby coastal ecosystems.

The Inundation of the Salton Basin by the Colorado River and How It Was Caused

Scientific American | April 14th, 1906

If the Colorado River continues to flow through the channel which it has been occupying during the last six months, the geography of the Southwest must be radically ch

If the Colorado River continues to flow through the channel which it has been occupying during the last six months, the geography of the Southwest must be radically changed, for at the present time but little water from the river reaches the Gulf of California, which until recently has formed its main estuary. Except when the river is in flood, the bulk of the water flows into what is known as the Salton Sink in southern California-a distance of fully 160 miles from the gulf.  The new channel of the Colorado takes a northwesterly course, while the channeI it formerly occupied is nearly south. It is perhaps needless to say that this watercourse is not only one of the most important in the Southwest, but is notable for the immense volume of water which it carries, especially during the flood seasons. But the quantity of detritus which it holds in solution is enormous, and is nearly equal to that carried down by the Mississippi at certain seasons of the year, owing to the topography of the region which drains into it. An idea of the quantity of water carried by the Colorado at different times of the year can be gained, when it is stated that actual measurements indicate a flow ranging as high as 30,000 cubic feet per second. It is estimated that if the silt and other material brought down the river in the course of a year were spread evenly over a given 'surface, it would cover no less than 35,000 acres to a minimum depth of one foot. Consequently, the Colorado is almost as much of a "land maker" as the Mississippi, acting like a gigantic suction dredge in carrying away the material in its vicinity and depositing it upon the lowlands near its mouth and in the Gulf of California.

The Ives Expedition of 1858

Imperial Irrigation District (IID) | October 1st, 1956