Reviewed and updated October 9, 2026 by the SearchSystems.net editorial team. The arrest counts are the ones each agency reported to the FBI, as the FBI held them on October 8, 2026. The jail figures are from the Vera Institute of Justice's Incarceration Trends data. Every office link was opened and checked against the office's own site between September 23, 2026 and October 2, 2026.
American Canyon, California, in Napa County, has about 22,000 residents (2024 Census Bureau estimate). A DUI arrest in American Canyon starts two cases, a criminal case (in the Superior Court of California, County of Napa) and a license case before the DMV, and leaves three records. This guide follows the arrest from the roadside to the court file and the driving record.
This guide covers the law, the arrest, booking, the court case, the license case, the records and common questions.
Related guides: American Canyon public records, Napa County DUI, American Canyon arrest records, American Canyon warrants, American Canyon inmate search, American Canyon criminal records, California arrest records and California inmate search.
The DUI Law in California
In California the offense is DUI, and the limit is 0.08.
Driving in California is consent to a breath or blood test when an officer has cause to suspect DUI; the license case that follows a refusal or a failed test is run by the DMV, separately from the criminal case.
For charging and sentencing, California counts prior offenses within 10 years.
Who Makes DUI Arrests in American Canyon
The Napa County Sheriff's Office and the agency that reports for American Canyon (filed by the FBI as American Canyon Police Department) make the DUI arrests in and around American Canyon.
The FBI's agency list also places two other agencies, one state agency and one state police unit in Napa County (the arrest records guide names each one); the Highway Patrol's Napa Area Office makes the arrests on the state highways.
Together, the six agencies in Napa County with all twelve months of 2025 on file reported 2,071 arrests to the FBI that year, all offenses together; the FBI's count for Napa County does not break DUI out.
Booking After a DUI Arrest in American Canyon
A driver arrested for DUI and kept in custody goes to the county jail, whichever agency made the arrest. The jail, run by the Napa County Sheriff's Office, held about 220 people on an average day in 2025 by the Vera Institute of Justice's count and has a custody page SearchSystems verified at app.napacounty.gov/CJNet/Public/BookingReport. The American Canyon inmate search guide covers the jail in full.
The Court Case
A DUI charge from American Canyon is brought by the District Attorney in the Superior Court of California, County of Napa.
The District Attorney's page SearchSystems verified is at napacounty.gov/2086/District-Attorney.
The court records page SearchSystems verified for the county is at napa.courts.ca.gov/research-records, phone (707) 299-1140.
California has no single public index of every trial court case; each court's records are looked up through that court.
The License Case
The court case is only half the record. The DMV runs a separate administrative case over the license, which can suspend it before the criminal case is decided, and the California Department of Motor Vehicles keeps the driving record the conviction goes on.
The Records a DUI Leaves
- The arrest report: from the agency that made the arrest, under the California Public Records Act.
- The court file: from the Superior Court of California, County of Napa, kept by the Superior Court clerk.
- The driving record: from the California Department of Motor Vehicles.
More on each: American Canyon arrest records, American Canyon police reports and American Canyon court records.
Frequently Asked Questions
What is the DUI limit in California?
0.08 percent blood alcohol.
Where is a DUI case from American Canyon heard?
In the Superior Court of California, County of Napa, brought by the District Attorney. The court records page SearchSystems verified for the county is at napa.courts.ca.gov/research-records.
Where is a person arrested for DUI in American Canyon held?
At the county jail, run by the Napa County Sheriff's Office, if kept in custody.
Who handles the license after a DUI arrest in California?
The DMV, in an administrative case separate from the court case.
How long does a DUI count as a prior in California?
10 years.
Is this the official American Canyon website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official city, county, court and state offices described above and does not hold records, charge for them or take requests.