Kiel Taylor: Irrigation and Water Challenges On the West Coast

About this episode

Vance interviews Kiel Taylor of Exeter Irrigation, a California ag-irrigation designer who covers Oregon, California, and Arizona, about the state's byzantine water system. Kiel walks through how wells and drip/micro-irrigation actually work (well depth economics, pump placement, filtration, evapotranspiration), the 2014 SGMA groundwater legislation and the GSA (Groundwater Sustainability Agency) governance structure that's emerged from it, and pushes back on the popular "ag uses 80% of California's water" claim (it's actually ~40% of non-environmental use). He explains that water isn't destroyed by irrigation -- it cycles through evapotranspiration -- and that drip irrigation adoption since the 1980s increased yields 38% while cutting water use 14%. Much of the conversation is a case study in "fractal localism," Vance's recurring frame: GSAs are volunteer-staffed, hyper-local water governance bodies where growers, engineers, and county officials sit on committees together, contrasted with the disconnect between California's urban coastal population and its agricultural interior. Kiel closes with predictions about sensor/telemetry-driven precision irrigation and Starlink's potential to give rural farms faster upload speeds than cities, enabling real-time automated water-shutoff decisions.

“So this is what I was saying earlier is that, you know, the complexity of what is done in ag... you wanna set the pump low enough that... you have a constant supply of water that you need, but not so low that you're paying additional costs to draw that water out of the ground.”

“There was some legislation passed in 2014, which was State Groundwater Management Act, otherwise known as SGMA... there are GSAs, groundwater sustainability agencies... responsible for coming up with a sustainability plan... to mitigate groundwater pumping.”

“Met of Los Angeles... takes about half the water, 2 million acre feet... it's a really important component to the whole system here. California Water System is extremely complicated.”

Key moments

• ~9%: MONEY/scale-setting -- Oroville Dam and the State Water Project moving 2 million acre-feet to LA's Metropolitan Water District, establishing scope.
• ~15%: CRAFT deep dive — how a well and pump are actually designed and sized, an unusually technical explainer segment.
• ~38%: The "ag uses 80% of water" myth debunked with the environmental/ag/urban split (50/40/10).
• ~44%: "If tomorrow there's no more food" -- Kiel's framing of agriculture as categorically non-negotiable infrastructure.
• ~50%: INSTITUTIONS — SGMA and GSA governance explained in detail, including local vs. state-level cost comparisons.
• ~58%: Fractal localism riff — Vance's framework applied directly to GSAs as volunteer hyperlocal governance bodies.
• ~62%: WINDOWS — explicit call to bridge the urban/rural divide rather than "cast stones," California needing to "unify."
• ~93%: Predictions segment — sensor telemetry, precision shutoffs, and Starlink's rural upload-speed advantage as the future of irrigation.

Notable quotes

“AG does not use 80% of the water in California... 40% is used in ag and the last 10% is used for urban areas. The bottom line is that 40% is growing food.”

“If tomorrow somebody told you there's no more food, that's a very different story.”

“We need leadership and we need stewardship... let's figure out how to bridge that gap.”