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Recent Storms Provide On-Farm Groundwater Recharge Opportunity

By Kristin Withrow posted 01-31-2023 06:50 AM

  
Water flowing through a channel

Intense storm activity in December and January provided the Fresno Irrigation District with an opportunity to begin to immediately offer water to growers for on-farm recharge to help improve local groundwater conditions. Following three years of extreme drought conditions, the storms have filled the majority of the 35 groundwater replenishment basins and allowed FID to route storm and flood waters into its boundary to replenish the underlying groundwater supply and help improve local groundwater levels which have steadily declined since 2019.

Irrigation canal flows past sign for Fresno Irrigation District Wagner BasinAs a result of the January storms, water has to be released from nearby Millerton Lake and urban stormwater basins continue to be dewatered into FID canals, resulting in the availability of storm and flood water that FID will continue to be diverting and route through its system. FID is delivering as much water as possible to its recharge basins, but there is additional water that can be diverted into the district if growers are able to use it. Since 2005, the amount of water being recharged into the ground is slightly more than the amount held in Millerton Lake. Just over 550,000 acre feet of water has been recharged into the aquifer below FID, with more opportunities now available to flow onto farms to further seep into the groundwater aquifer for later use.

“With favorable water conditions, FID is implementing an on-farm recharge program offering free flood waters to growers who desire to divert some amount of water onto their farms to help improve local groundwater levels,” said Bill Stretch, FID General Manager.

While there is no charge to growers who wish to take storm and flood waters for on-farm recharge, deliveries are limited to the portions of the FID delivery system currently being utilized to route storm and flood waters, with additional systems anticipated to come online in late February.

“In light of the requirements of the State’s Sustainable Groundwater Management Act’s requirements to improve local groundwater levels, FID is making every effort to route storm and flood waters into its boundary and utilize facilities, including individual farms, for recharge purposes,” Stretch said.​​


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