Tag: agriculture
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Managed Aquifer Recharge on Agriculture Lands: Infiltration Basins, Flood-MAR and Regional Variability
By Sarah Sarfaty Epstein Groundwater has long been the unseen lifeblood of irrigators across the state, and some are now taking an active role in replenishing it. When and where surface water has been insufficient, Californians have drilled down, steadily depleting the aquifer, as shown in Figure 1. California’s cumulative groundwater overdraft is over 100…
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A Conservation Footprint for Multiple Species of Wildlife in California Rice
By John M. Eadie, Daniel S. Karp, and Andrew L. Rypel Picture a farm. Only one crop type is grown over a vast field stretching to the horizon. Signs of modern agriculture are everywhere— tractors slowly driving by, fields engineered in neat squares, with millions of precisely spaced plants. All cues indicate much food will…
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Nature has solutions…What are they? And why do they matter?
By Andrew L. Rypel California’s water problems are intense; so much so they are often referred to as ‘wicked’ for their extraordinary depth of complexity and general unsolvability. Yet it recently occurred to me that some of the better and more creative solutions often derive from one particular source – nature itself. Indeed, studies of…
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Jobs per drop irrigating California crops
By Josué Medellín-Azuara, Jay Lund and Richard Howitt Reposted from Apr 28, 2015 (an oldie, but goodie!) Some of the most popular drought stories lately have been on the amount of what water needed to produce food from California, as a consumer sees it — a single almond, a head of lettuce or a glass of wine.…
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Capturing El Niño for the underground
By Philip Bachand, Helen Dahlke, William Horwath, Thomas Harter and Toby O’Geen A much-anticipated “Godzilla” El Niño this winter may refill California’s drought-diminished reservoirs, but it won’t do much to restock the severely depleted aquifers we rely upon to get by during droughts. One reason for this is the sheer depth of California’s precipitation deficit…
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Drought bites harder, but agriculture remains robust
Spanish version By Richard Howitt, Duncan MacEwan, Josué Medellín-Azuara and Jay Lund Today we release our second annual report estimating the economic impacts from prolonged drought. More than anything, the results of our 16-page analysis of the current growing season speak to agriculture’s remarkable resilience to multiyear surface water shortages. They also show that the…
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Harsher drought impacts forecast for California agriculture
By Richard Howitt, Duncan MacEwan, Josué Medellín-Azuara, Jay Lund and Daniel A. Sumner The drought is expected to be worse for California’s agricultural economy this year because of reduced water availability, according to our preliminary estimates released today. The study, summarized below, estimates farmers will have 2.7 million acre-feet less surface water than they would in a…
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Jobs per drop irrigating California crops
By Josué Medellín-Azuara, Jay Lund and Richard Howitt Some of the most popular drought stories lately have been on the amount of what water needed to produce food from California, as a consumer sees it — a single almond, a head of lettuce or a glass of wine. The stories are often illustrated with pictures of common…
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Dollars and drops per California crop
By Josué Medellín-Azuara and Jay Lund When it comes to water, California’s irrigated agriculture is always under the public magnifying glass because it is the largest managed water use in the state and the economic base for many rural areas. During a prolonged drought like the current one, however, crop water comes under a microscope.…
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Weathering the drought by drawing down the bank
By Richard Howitt, Josué Medellín-Azuara, Duncan MacEwan and Jay Lund Today, UC Davis Center for Watershed Sciences economists join the California Department of Food and Agriculture in releasing a second, more comprehensive and forward-looking report estimating the effects of the California drought on farm production. (UC Davis news release, Video of national press briefing) The study…
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Why California’s agriculture needs groundwater management
California’s agricultural prosperity increasingly depends on groundwater availability during drought. Global markets favoring high-value nuts, fruits and wine grapes are fueling a steady conversion of farmland from annual crops and pasture to orchards and vineyards. The growing profitability of these permanent crops, however, cannot be sustained unless agricultural communities commit to preserve and manage groundwater…
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Severe drought impacts to Central Valley agriculture forecast this year
By Richard Howitt, Josué Medellín-Azuara, Duncan MacEwan and Jay Lund This year’s drought will have severe impacts on irrigated agriculture in California’s Central Valley. To estimate this impact, we updated and applied the Statewide Agricultural Production (SWAP) model for estimated cutbacks in surface water supplies (based on interviews with Valley water providers) — with limitations on groundwater…
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Paradox on the Plains: As water efficiency increases, so can water use
By C.-Y. Cynthia Lin Groundwater and water conservation are critical issues in California and globally. Many of the world’s most productive agricultural regions depend on groundwater and have experienced unsustainable declines in water levels. In many places, policymakers have attempted to decrease groundwater extraction through voluntary, incentive-based conservation programs for irrigated agriculture. These policies are…
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A sweet spot for farms and fish on a floodplain
By Richard Howitt and Josué Medellín-Azuara For decades, Sacramento area freeway commuters have been treated to a carousel of contrasting landscapes as they cross a vast floodplain known as the Yolo Bypass. The carousel rotates by the season. In wet winters, the rain-swollen Sacramento River spills into the bypass, which is designed as a relief…
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Growing costs and concern for drinking water in Tulare Basin and Salinas Valley
Thomas Harter, Robert M. Hagan Endowed Chair in Water Management and Policy, University of California – Davis Jay R. Lund, The Ray B. Krone Chair of Environmental Engineering, University of California – Davis A potential public health concern has been percolating into aquifer drinking water supplies in the Tulare Basin and Salinas Valley for the…
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Water—Who uses how much?
Whereas agriculture used to consume 80 percent of the state’s water supply, today 46 percent of captured and stored water goes to environmental purposes, such as rebuilding wetlands. Meanwhile 43 percent goes to farming and 11 percent to municipal uses. — The Economist, October 2009 By Jeffrey Mount This excerpt is from an article that…
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Taking agricultural conservation seriously
Jay Lund1, Ellen Hanak2, Richard Howitt3, Ariel Dinar4, Brian Gray5, Jeffrey Mount6, Peter Moyle7, Barton “Buzz” Thompson8 For decades, people have observed that human water use in California is largely devoted to irrigating farmland, and they have therefore assumed that farms are the obvious places to save water. Our recent book, Managing California’s…