2026-07-20

The Canal Is Sinking:

How Overpumping Wrecked the Friant-Kern — and Spent Tulare County’s Decade of Local Groundwater Control

A Water Policy Series — July 2026

Introduction

A little over a week ago, water managers in southern Tulare County were told something that a few of them had, days earlier, called impossible. The state is preparing to shut off groundwater pumping within two miles of the Friant-Kern Canal, perhaps as soon as April 2027.¹ “When anybody says no pumping within two or three miles of the canal,” the general manager of the Porterville groundwater agency had said at a meeting on July 14, “I’d say, ‘You guys are smoking crack.’ Because that’s never gonna happen.”¹ Three days later, the State Water Resources Control Board laid out a plan to do exactly that, on a faster timeline than anyone expected.¹

The thing that pushed a no-pump zone from lunacy to policy is not the state of the aquifer but the state of the canal. The Friant-Kern Canal, the concrete artery that carries Sierra snowmelt down the eastern San Joaquin Valley, has sunk. In its worst stretch, it has dropped about ten feet and lost as much as sixty percent of its capacity to move water, and the bill to fix it now tops three-quarters of a billion dollars.^{2 3} The cause is the same wells the state is now moving to shut off. This is a story about that loop — about a decade in which valley growers were offered a deal to manage their own groundwater and spent it instead pumping the ground out from under the very canal that was supposed to spare them the need. The canal is sinking. So, with it, is the argument for leaving the pumps in local hands.

I. The Deal SGMA Offered

To see why April 2027 matters, you have to see the bargain struck in 2014. That year California passed the Sustainable Groundwater Management Act — SGMA — its first-ever law requiring that groundwater be managed toward balance.⁴ The deal at its heart was deliberately generous to local interests: form your own local agencies, write your own plan, and bring your basin into sustainability by 2040, and Sacramento will stay out of it. The alternative was written into the same law. If a basin’s plan is judged inadequate, the state gives it 180 days to fix it; if it still falls short, the State Water Board can place the basin on probation, imposing fees, metering, and reporting; and if the deficiencies persist, the Board can write its own interim plan — one that can simply limit how much anyone pumps.⁴ Local control, in other words, was never a right. It was a privilege conditioned on producing a credible plan, with a state takeover waiting at the bottom of the ladder for anyone who didn’t.

The Tule sub-basin, which sprawls across southern Tulare County, walked down that ladder rung by rung. Its agencies submitted plans that failed the state’s requirements — not once but twice — and in September 2024 the Board placed the sub-basin on probation, ordering larger pumpers to meter and register their wells at $300 apiece, report their extractions, and pay $20 for every acre-foot they pull from the ground.⁵ Probation is the next-to-last rung. What the state unveiled this month is the last one coming into view: the move from collecting fees to actually capping the pumps. A decade of local control has narrowed to a single warning, delivered by Delano-Earlimart’s general manager: this is “the last opportunity for the basin to produce a plan that allows control to remain in the hands of the locals.”¹

II. Why the Ground Sinks

Underneath the politics is a physical fact that drives everything else. When you pump water out of certain clay-rich aquifers faster than it returns, the emptied ground does not simply wait to be refilled — it compacts permanently, and the land surface above it sinks. This is subsidence, and the Tule sub-basin has more of it than anywhere in California: since 2015 the Lower Tule River area has dropped 7.7 feet, the worst in the state.¹ The land is not the only thing that sinks with it. Anything built on that land sinks too, unevenly, and the Friant-Kern Canal runs straight through the worst of it.

Now hold the irony up to the light, because it is the center of the story. The Friant-Kern Canal exists precisely so that farmers in this dry corner of the valley do not have to pump groundwater — it delivers surface water from the San Joaquin River, gravity-fed south from Millerton Lake, as the sustainable alternative to draining the aquifer.³ But the canal moves water downhill by the barest of margins, and when the ground beneath its middle reach sank roughly ten feet, that reach bowed into a shallow bowl that could no longer carry a full load — cutting deliveries by up to sixty percent.² Less surface water delivered means more groundwater pumped to make up the difference, which sinks the canal further, which cuts deliveries again. The growers have been sawing off the branch they are sitting on. Repairing just the middle reach has already cost about $325 million, with the full fix expected to top half a billion, and the subsidence damage the state now cites as its reason for acting runs to $797 million.^{2 1} The aquifer, left to the arrangement of the last decade, has been quietly eating the single most valuable piece of water infrastructure in the southern valley.

III. What Losing Local Control Looks Like

This is where the cost lands, and lands hard. A pumping moratorium is not a temporary belt-tightening that a farm absorbs and moves past. The two-mile strip along the canal that the state is targeting is planted heavily in citrus and pistachios — permanent crops.¹ You can fallow a field of tomatoes for a season and plant again next year; you cannot fallow an orchard. Cut off its water, and the trees die, and with them the years of investment it took to bring them to bearing age. That is why a no-pump zone sounded like lunacy to managers a week before it was proposed, and why its sudden arrival on an accelerated calendar reads, to the people who run these districts, as the state signaling that it means it. Lower Tule River’s manager put the scramble in plain terms: “We’ve got six months to find something other than a strict moratorium.”¹

The local institutions that were supposed to prevent this moment have, meanwhile, been visibly buckling under the bill they generated. The Eastern Tule agency, whose farmers contributed heavily to the canal’s collapse, had agreed years ago to pay a share of the repair — $125 million as a lump sum, or $200 million over a decade through pumping penalties.⁶ When payment came due, the arrangement dissolved into litigation; the case settled in early 2026, and the agency itself was dissolved, its growers having balked at the fees meant to cover the damage they caused.⁶ This is the governance failure that invites a state takeover: not villainy, but a collection of local actors each rationally declining to pay for a shared harm, until the shared harm grows large enough that only the state has the standing to stop it.

It helps to see who is actually in the room, because the fault line does not run where the “farmers versus regulators” framing suggests. It runs between water users. On one side sit the growers whose pumping lowered the water table and buckled the canal; on the other, the surface-water contractors of the Friant Water Authority — many of them farmers too — whose deliveries that buckling cut, and who sued their own valley neighbors to recover the cost. Above them stand the enforcers: the State Water Resources Control Board, which will draw the no-pump line, and the Department of Water Resources, whose subsidence guidelines shape it; alongside them the U.S. Bureau of Reclamation, which owns the canal and put federal money into the repair. Caught in the middle are the twelve local groundwater agencies and their managers — the human face of “local control,” now expected to impose on their own constituents the restraint the collective could never agree to. And standing furthest from the microphone are the ones who will feel a falling water table first: the domestic and small-community well users, an explicit Phase II concern, who cannot simply drill deeper when the aquifer drops and whose shallow wells go dry while the pistachios are still being argued over.

IV. The Template

None of this is confined to one canal or one county, which is why it is worth watching closely. The Tule sub-basin is not an outlier being singled out; it is the leading edge of a test the whole San Joaquin Valley is about to take. The neighboring Tulare Lake sub-basin was placed on probation months earlier, in April 2024, though its enforcement has been slowed by litigation.⁷ Across the valley, basin after basin submitted plans that lean on optimistic assumptions and deferred pain to hit the 2040 target, and the state has signaled it will no longer accept plans that pencil out only on paper. What happens in Tule — whether the threat of a moratorium finally forces a credible local plan, or whether the state has to draw the no-pump line itself — will tell every other over-drafted basin how real the bottom rung of the ladder is.

And it will settle a question SGMA left politely unanswered for eleven years: what “local control” is actually worth when the local parties cannot agree to constrain themselves. The law’s authors hoped the mere shadow of state intervention would be enough — that no basin would ever want to hand its water decisions to Sacramento, and so every basin would do the hard work to avoid it. The Tule sub-basin is the case where the shadow wasn’t enough, where a decade of the softer options ran out, and where the state is now reaching for the tool of last resort. The valley is watching to see whether it actually closes its hand.

Conclusion

Nothing is final yet. The state’s plan is a proposal; the growers still have most of a year to produce a local plan that could avert the moratorium, and the hardship facing families who planted orchards in good faith on land the state may now cut off is real. Local managers are racing right now to write the plan that keeps the decision theirs. They may succeed, and SGMA would count that a win — the threat working as designed.

But the underlying problem does not care how that turns out. For a decade, the choice in the Tule sub-basin was framed as farmers versus regulators, local knowledge versus distant bureaucracy. The sinking canal shows the real contest was never political. It was physical: a finite aquifer drawn down faster than it could recover, with the feet of subsidence and the repair bills as the running total. The state did not create the crisis in the Tule sub-basin; it is the only party large enough to answer it. The canal sank because a decade of local decisions allowed it. What is left to decide is who makes the next decade’s decisions — and whether there is a working canal left to carry them out.

Sources