Why 2027 Is Set to Be the First Shortage Year That Reaches Lake Havasu City's River Water

From 2020 through 2026, Arizona's Colorado River shortages fell on the Central Arizona Project. On-river cities with fourth-priority water, Lake Havasu City among them, took no shortage reductions in those years. The Arizona Department of Water Resources now says the cut that starts in 2027 is large enough to reach those on-river users too. As of October 2026, nobody has published what Lake Havasu City's share will be.

That matters if you are pricing a vacant lot, planning a custom home, or studying a subdivision opportunity here. The headlines about shortage have been running since 2020. Until now, those shortages had no direct effect on Havasu's own river supply.

The water question that comes up in a land deal

Buyers looking at Havasu land often ask whether the city has water. On paper the answer is yes. The Arizona Department of Water Resources' list of designated water providers, dated August 26, 2025, gives Lake Havasu City an adequate water supply designation outside an Active Management Area. That is a different category from the "assured" designation used in the state's Active Management Areas.

The same ADWR document adds two conditions that matter for land deals. Designations can change, and a provider's boundary may not match city limits. A designation also doesn't guarantee service to a particular development: a subdivision needs a written commitment from the water provider before it can rely on the provider's designation. For anyone weighing a multi-lot project, that written commitment is where water stops being general and becomes specific to a parcel.

The adequate designation describes a supply that, until 2027, had never taken a shortage cut. That history is about to change.

Six years of shortage, with no cut to Havasu's river water

Arizona divides its Colorado River water by priority. Lake Havasu City's main supply is fourth-priority water: 28,581.7 acre-feet per year, according to the city's Water Conservation Plan 2020 Update. The Central Arizona Project, which carries river water to central and southern Arizona, also holds fourth-priority water. When shortages hit, Arizona has to decide how to split the reduction between those two groups.

The split follows a formula from ADWR's 2006 Director's Shortage Sharing Recommendation, which the Bureau of Reclamation has been applying. ADWR's August 24, 2026 presentation to its Arizona Reconsultation Committee spells out how it works:

"If current use of on-River P4 is less than the Fourth Priority Mainstream Shortage Reduced Water Supply, there is no shortage reduction to P4 mainstream contractors and shortages fall exclusively on CAWCD."

CAWCD is the Central Arizona Water Conservation District, which operates the Central Arizona Project. The same slide says this condition held "2020 through 2026." On-river users like Havasu stayed whole because the Central Arizona Project took the cuts. The test compares what on-river fourth-priority users actually draw with a calculated reduced supply. As long as on-river use stayed below that line, the shortage went to the Central Arizona Project.

The next line on the slide is the reason this post exists. If on-river use exceeds that reduced supply, "part of the reductions fall on P4 on-River water users," and ADWR states plainly that this "will occur with a reduction of 760 KAF to Arizona."

What the federal government set on August 21

The 760,000-acre-foot figure comes from the Department of the Interior's August 21, 2026 release of the Record of Decision and the 2027–2028 Operating Guidelines. Reclamation published the Final Environmental Impact Statement on July 31, 2026. The seven Basin states did not reach consensus on long-term operations. In its place, Interior adopted a 10-year Decision Framework that sets operating guidelines in two-year blocks, and the first block took effect October 1, 2026.

Interior's release says Lake Powell and Lake Mead together hold less water than at any time since before Lake Powell began filling in 1963. Reclamation's September 2026 24-Month Study, dated September 15, 2026, confirms that a shortage condition will govern Lake Mead operations for calendar year 2027 under the new guidelines.

Where Havasu's share stands as of October 2026

ADWR's preliminary chart of the 760,000-acre-foot reduction shows the following:

• Arizona's agricultural pool and non-Indian agricultural priority water absorb 100% shortages.
• Central Arizona Project municipal and industrial priority water takes an estimated 14% cut.
• Indian priority water takes an estimated 10% cut.
• The Central Arizona Project is lining up added supplies to soften the impact, including 20,000 acre-feet per year from Yuma wells and 40,000 acre-feet per year from Lake Pleasant.
• The portion assigned to on-river fourth-priority users is marked "TBD."

ADWR labels these figures "preliminary data and analysis; for illustrative purposes only," and says Reclamation and ADWR will be engaging on-river fourth-priority contractors for further discussion. The 14% figure applies to the Central Arizona Project's municipal supply. It is not a Havasu number.

At the county level, the Mohave County Board of Supervisors discussed the new guidelines at its September 8, 2026 meeting. The board flagged local concerns about the Greenstone–Queen Creek water transfer and Mohave Valley credits, according to a Citizen Portal meeting digest. That digest gives no cut or mitigation plan specific to Lake Havasu City.

Put together, here is what is settled and what is still open as of early October 2026:

What the city holds against a cut

The city's water portfolio is more layered than its single entitlement figure suggests. The Water Conservation Plan 2020 Update, which the City Council approved on December 10, 2019, breaks it down this way:

1. 19,180 acre-feet per year under the city's own Reclamation contract.
2. 6,000 acre-feet per year through a Mohave County Water Authority subcontract.
3. Further purchased and transferred subcontracts, bringing the total to 28,581.7 acre-feet per year.
4. 2,139 acre-feet from the Cibola subcontract, which the city may use only during a declared shortage or when annual demand exceeds its entitlement.
5. 126,019 acre-feet of long-term storage credits, available through 2096 when the Interior Secretary declares a Colorado River shortage.

The plan also counts treated effluent as a way to reduce demand on the river. It reports that the city sold 1,850 acre-feet of effluent in 2018, close to 60% of what it generated that year.

Two of those five items exist specifically for shortage conditions. The 2020 Update predates the 2027 rules, though. No source found for this post shows the city deciding, between June and October 2026, to draw on the storage credits or the Cibola water.

The gap between the entitlement and actual use is just as important. In 2021-era reporting by Today's News-Herald, the city's water resources coordinator at the time said annual use had dropped from about 14,500 acre-feet in 2005–07 to under 12,000 acre-feet every year since 2014, even as population grew. He also said the entitlement could serve a build-out population of 96,000 in normal water periods, but not necessarily during shortages. That use figure is several years old, and no current one was available for this post. The caveat in that 2021 statement now applies to a real shortage condition.

The growth the city is planning for

The city has been updating its water planning alongside the federal process. In February 2025, Today's News-Herald reported that the Council had hired Jacobs Engineering to update the Water Master Plan through 2040. The plan projects about 3,500 new homes from 2025 to 2040, roughly 230 a year, and the city issued 166 single-family permits in 2024.

On February 24, 2026, the Council unanimously adopted Resolution 26-3899, approving the 2025 Water Master Plan. The plan sets a 2040 planning horizon and recommends a 10-year capital-improvement roadmap for supply, storage, and treatment. That vote came six months before the Record of Decision. The plan was adopted before the federal rules that now shape its supply assumptions were published.

Cost is a separate thread. At an April 16, 2026 budget work session, city staff said the five-year capital plan would need water and wastewater rate adjustments in years three through five to be fully funded. That was a budget assumption tied to infrastructure. It was not a rate schedule, and it was not linked to river cuts.

The Arizona Water Banking Authority has adopted policies for 2027 and 2028 that reward conservation. ADWR also reports that several on-river contractors in Arizona are contributing to the state's 300,000-acre-foot share of the Lower Basin conservation commitment. The ADWR deck does not say whether Lake Havasu City is one of them.

Quick answers

Does the 2027 shortage mean Lake Havasu City's water service is being cut? No public source sets a Lake Havasu City reduction as of October 2026. ADWR expects on-river fourth-priority users to share in Arizona's reduction, and it lists that portion as "TBD."

Is the 14% figure in the news Havasu's cut? No. ADWR's preliminary 14% estimate applies to the Central Arizona Project's municipal and industrial priority supply.

How long do the new rules last? The current operating guidelines cover 2027 and 2028. They sit inside a 10-year Decision Framework that runs through 2036 and expects new guidelines in two-year blocks.

Where can I check the city's water designation? ADWR publishes its list of designated providers. The agency recommends confirming current status directly, because designations can change and do not guarantee service to a particular parcel.

How Lake Havasu City's water performs under the 2027 rules will help shape how land here gets planned, approved, and built. Desert Land Group's founders bring land planning, appraisal, and development experience to that question. If you are weighing a homesite or a multi-lot project and want to talk through feasibility as the state works out the on-river share, contact Desert Land Group.

This article is general information, not legal, tax or financial advice. Consult a qualified professional about your situation.