Waterwise Wednesday: Policy Works

Researchers, led by Estelle Chaussard from the University of Buffalo, link ground water recovery in Santa Clara Valley California to the state’s newly instated water conservation efforts—policies that diverted surface water to refill aquifers

In 2013, interferometric synthetic aperture radar (InSARa) measured a 2-centimeter decrease in ground-level elevation, followed by another 3 centimeters in 2014. The research team estimates a groundwater loss of about a tenth of a cubic kilometer caused the ground to shrink or lower.

Ground surfaces began to expand and rise in September 2015, rising nearly 2 centimeters over the next two years and were at pre-study levels by the end of 2016. This reflects the same time surface water diversion policy went into effect.

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Waterwise Wednesday: Nebraska Water Trivia

1. True or False: Nebraska houses the most miles of river in the U.S.

2. True or False: Nebraska manufactures and uses the most center pivot irrigation systems in the world.

3. True or False: Nebraska contains the most groundwater of the fifty states.

1. True. Four major rivers, and many small rivers, flow nearly 23,000 miles across the state.

2. True. The top four center pivot system manufacturers are based in Nebraska and supply 85% of the global demand. Nebraska manufactures utilizes about 60,000 center pivot systems.

3. True. We sit on the High Plains Aquifer, which reaches eight states, the largest source of groundwater in the U.S.