OUI Is Not DUI: The Water Rules Havasu Boaters Get Wrong

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Most people who spend a weekend on Lake Havasu assume the rules on the water are a looser version of the rules on the road. Matthew Lopez, who runs a criminal defense office in Lake Havasu City, says that assumption drives a steady share of the cases that come through his door.

Arizona does not treat boating as a lesser version of driving. It treats it as a separate offense with its own statute, its own penalties, and a handful of rules that have no equivalent on the highway. Some of those differences help a defendant. Others make things worse. Lopez says the trouble is that most people cannot tell which is which until they are already charged.

The starting point is the name. On the road it is DUI, charged under ARS 28-1381. On the water, it is OUI, operating under the influence, charged under ARS 5-395. Different title of the code entirely, which is why a search for Arizona DUI penalties returns numbers that do not apply to a boating case.

What carries over is the part people hope will not. The threshold is the same 0.08 within two hours of operating, and Arizona applies the same impaired to the slightest degree standard on the water that it applies on the road. Lopez says that second clause is the one that surprises visitors most, because it has no number attached to it. A boater who tests under the legal limit can still be charged if the officer concluded that alcohol affected their ability to operate safely.

Then there is the word that does more work than any other in the statute. ARS 5-395 reaches a motorized watercraft that is underway. A car parked on the shoulder and a boat anchored in Copper Canyon are not the same legal situation, and the underway requirement is a genuine element the state has to establish. Lopez says whether the vessel was moving, drifting, anchored, or pulled up on the sand at Site Six is one of the first things he asks about, and it is frequently the thing nobody documented.

Actual physical control still applies, though. Nobody has to be driving the boat when officers arrive. Where a person was sitting, who had the keys, and whether the engine was running all factor into that question, the same way they would in a car.

Another common misread involves who is doing the stopping. Arizona Game and Fish officers patrol the lake alongside the Mohave County Sheriff's Office and the Lake Havasu City Police Department, and Lopez says visitors routinely treat a Game and Fish contact as a safety inspection rather than a criminal investigation. Those officers are certified peace officers with arrest authority. What starts as a question about life jackets can end with a booking.

The refusal rules diverge sharply, and this is where Lopez says people make decisions they regret. Under ARS 5-395.03, anyone operating a motorized watercraft in Arizona has already consented to testing after an arrest. Refusing carries a civil penalty of $750, and a separate $500 assessment follows a conviction. The refusal itself is also admissible as evidence at trial under ARS 5-395(K). Whether and how a refusal on the water touches a driver's license is a question with a more complicated answer than most people assume, and Lopez says it is worth asking a lawyer rather than guessing at the dock.

The penalties themselves are not light. A first OUI is a class 1 misdemeanor under ARS 5-395.01, carrying at least ten consecutive days in jail, a fine of at least $250, and a $500 assessment to the state prison construction and operations fund, plus mandatory alcohol screening and any treatment that screening recommends. ARS 5-397 raises the mandatory jail time at an alcohol concentration of 0.15 and again at 0.20.

A third violation within 84 months, or one with a passenger under fifteen aboard, becomes aggravated OUI under ARS 5-396, which is a felony. ARS 5-396.01 allows forfeiture of the watercraft itself in an aggravated case. Lopez says boat owners are often the last to learn that the vessel is exposed, and for a lot of families on this lake the boat is a significant asset.

The 84-month lookback is worth sitting with. Arizona counts prior convictions across a seven-year window, which means a case from a different summer, and in some circumstances a qualifying conviction from another state, can change the exposure on a new one entirely.

Where a case lands depends on where the stop happened. Misdemeanors charged inside city limits generally go to the Lake Havasu City Municipal Court. Misdemeanors from unincorporated parts of the county go to the Lake Havasu Justice Court. Felonies, including aggravated OUI, go to Mohave County Superior Court. Lopez notes that all three sit in Lake Havasu City, which leads some defendants to assume they are all the same court with the same prosecutors and the same practices. They are not.

For out-of-state visitors, the case does not end when the weekend does. Lopez says people regularly assume an Arizona charge can be resolved by mail from California or Nevada. Arizona courts frequently require appearances, and a missed date produces a warrant that does not expire and tends to resurface at the worst possible moment.

His advice before any of that starts is the same advice he gives on the road. Decline politely to discuss the case, and ask for a lawyer without softening it. The conversation on the water, Lopez says, is almost always the part of the case that cannot be taken back later.

About Matthew Lopez Law, PLLC

Matthew Lopez Law, PLLC is an Arizona criminal defense firm handling DUI, OUI, domestic violence, drug, and felony cases. The firm works from offices in Tempe, Lake Havasu City, Glendale, Apache Junction, and Parker, and appears in courts throughout Mohave County and across Arizona.

To learn more, visit matthewlopezlawyer.com.

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