Dry weather classification expands to North Island
The dry weather in some parts of the North Island has received medium-scale adverse event classification from the Government.
Drought on the US West Coast is tightening its grip on California agriculture, squeezing 30% more workers and cropland out of production than in 2014, according to the latest drought impact report by the UC Davis Center for Watershed Sciences.
In 2015, the state’s farm economy will lose US $1.84 billion and 10,100 seasonal jobs because of the drought, the report estimates. And it forecasts how the industry will fare if the drought persists through 2017.
The researchers say the industry overall remains robust. The agricultural economy is still growing in this fourth year of severe drought, watered by vast but declining reserves of groundwater, which will offset 70% of the surface water shortage this year,
California is the world’s richest food-producing region. Strong global demand and prices for its fruit, nuts and vegetables has helped sustain the farm economy along with intrastate water transfers and shifts in growing locations.
“We’re getting by remarkably well this year – much better than many had predicted – but it’s not a free lunch,” said lead author Richard Howitt, a UC Davis professor emeritus of agricultural and resource economics.
He says the heavy reliance on groundwater comes at ever-increasing energy costs as farmers pump deeper and drill more wells. Some of the heavy pumping is in basins already in severe overdraft – where groundwater use greatly exceeds replenishment of aquifers – inviting further land subsidence, water quality problems and diminishing reserves.
Several small rural communities have high unemployment and dried-up domestic wells because of the drought, particularly in the Tulare Basin.
“If a drought of this intensity persists beyond 2015, California’s agricultural production and employment will continue to erode,” said co-author Josue Medellin-Azuara, a water economist with the UC Davis Center for Watershed Sciences.
The UC Davis team used computer models and the latest estimates of surface water availability from state and federal water projects and local water districts. They forecast several drought-related impacts in the state’s major agricultural regions for the current growing season, including:
Meanwhile, the scientists noted that new state groundwater laws requiring local agencies to attain sustainable yields could eventually reverse the depletion of underground reserves.
“The transition will cause some increased fallowing of cropland or longer crop rotations but will help preserve California’s ability to support more profitable permanent and vegetable crops during drought,” said report co-author Jay Lund.
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