River Guardians: Inside Sacramento County Sheriff's Marine Enforcement Detail During One of the Year's Busiest Weekends

(SACRAMENTO, CA.) — Before fireworks illuminated Sacramento's skyline, another Fourth of July tradition was already underway on the Sacramento River.

Sacramento County's rivers attract hundreds of thousands of recreational users each summer. With increased boat traffic comes a higher risk of collisions, boating under the influence, drownings and other emergencies, making holiday weekends among the busiest periods of the year for marine deputies.

While thousands gathered at Discovery Park, Paradise Beach and along miles of shoreline, deputies from the Sacramento County Sheriff's Office Marine Enforcement Detail were already patrolling the region's busiest waterways—watching for impaired boaters, responding to emergencies, assisting stranded mariners and helping families enjoy the holiday safely.

(Photo Credit: OpGov.News)

OpGov.News spent several hours aboard a Sacramento County Sheriff's patrol boat during the Independence Day operation, providing a firsthand look at the work that often goes unnoticed behind one of Sacramento's largest annual celebrations.

(From left to right: Deputy Isaac Johnson, Sacramento County Sheriff Jim Cooper, and Sergeant Sam Flores standing on a dock. Deputy Johnson was recognized by the 2025 California Boating Safety Officers Association as Officer of the Year. Image Credit: Sacramento County Sheriff’s Office Marine Enforcement Detail.)

For this patrol, OpGov.News joined Sgt. Sam Flores and Deputy Isaac Johnson, the California Boating Safety Officers Association's 2025 Officer of the Year, aboard one of the Sheriff's Marine Enforcement Detail patrol boats. As recreational boats crisscrossed the river, personal watercraft zipped between anchored vessels and kayakers drifted along the shoreline, deputies remained constantly alert.

"There isn't really any downtime today," Sgt. Flores said, while scanning the busy river. "On holidays like the Fourth of July, our biggest priority is making sure everyone gets home safely. Most people out here want to do the right thing. A lot of what we do is education—making sure they have the proper equipment and understand the rules before something goes wrong."

(Photo Credits: OpGov.News.)

A Floating Police Beat

Unlike patrol deputies assigned to neighborhoods and city streets, marine deputies work in an environment where conditions can change within seconds.

Boat traffic, strong currents, inexperienced operators, alcohol consumption, submerged hazards and mechanical breakdowns all combine to create unique public safety challenges.

(Photos of Sgt. Flores on one of his patrols. Image Credits: Sacramento County Sheriff’s Office Facebook Post. River Blitz, 2025.)

The Sacramento County Sheriff's Marine Enforcement Detail consists of three deputies and one sergeant assigned full time to patrol more than 300 miles of waterways stretching from Sacramento's airport south through the Delta to the Antioch Bridge, including countless sloughs and connecting waterways.

During the busy summer season—from Memorial Day through Labor Day—the Marine Enforcement Detail works seven days a week whenever staffing and maintenance schedules allow.

(Image Credits: Sacramento County Sheriff’s Office Marine Enforcement Detail.)

Its fleet includes five patrol boats and four personal watercraft, with patrol boats strategically stationed at Riverbank Marina, Brannan Island and Rio Vista to reduce response times across Sacramento County's vast waterway system.

"We have a big coverage area," Sgt. Flores said. "Our goal is to be on the water as much as possible."

Although Independence Day is one of the Marine Detail's busiest weekends, the work continues year-round.

(Photo Credit: Sacramento Sheriff’s Marine Enforcement Detail.)

Deputies investigate stolen boats and personal watercraft, recover submerged vehicles, assist with drowning investigations through the Sacramento County Sheriff's Office Public Safety Dive Team, inspect long-term moored vessels, remove abandoned boats through grant-funded programs and respond to everything from disabled vessels and marina disturbances to emergency water rescues.

Just days before the Fourth of July, Sgt. Flores said the Marine Enforcement Detail investigated a series of overnight thefts involving several wake boats and a personal watercraft in the Delta.

Many of the Marine Enforcement Detail’s specialized vessels are funded through state and federal grants rather than Sacramento County's general fund, allowing deputies to maintain equipment designed specifically for marine patrol, search-and-rescue operations and underwater recovery missions.

Enforcement Through Education

Despite wearing badges and carrying full law enforcement authority, Sgt. Flores said citations are rarely the Marine Enforcement Detail’s primary objective.

"Our goal is enforcement through education," he said.

Throughout the afternoon, deputies contacted recreational boaters to ensure vessels carried the required safety equipment and that operators understood California's boating laws.

One routine safety check observed by OpGov.News reflected that philosophy.

After the deputies observed a recreational boat traveling too fast through a posted 5 mph/no-wake zone near Old Sacramento—a restricted area where operators must travel slowly enough to avoid creating a wake that could endanger other boaters or damage nearby vessels and docks—Deputy Johnson activated the patrol boat's emergency lights. He then skillfully maneuvered the Marine Enforcement Detail’s patrol boat alongside the recreational vessel to allow Sgt. Flores to safely speak with the operator.

(Marine Enforcement Detail pulled alongside a family during a stop. Photo Credit: OpGov.News.)

Remaining aboard the patrol boat, Sgt. Flores spoke with the operator about the speed violation before conducting a routine boating safety inspection, checking for required equipment including life jackets, vessel registration, a fire extinguisher, a sound-producing device and a California Boater Card.

Rather than issuing a citation, Sgt. Flores used the encounter to educate the family about safe boating requirements and wished them a safe Fourth of July before Deputy Johnson guided the patrol boat back into the channel.

Sgt. Flores said contacts like these are among the Marine Enforcement Detail’s most valuable tools.

"If someone forgot something or has a question, we'd much rather help them fix it now than respond to an emergency later," he said. "These conversations go a long way toward preventing accidents."

The contact also demonstrated another skill unique to marine law enforcement.

Before Sgt. Flores could begin the safety check, Deputy Johnson had to account for current, wind, boat wakes and surrounding river traffic, while positioning the Sheriff's patrol boat alongside the moving vessel. Unlike a traffic stop on land, there are no brakes, shoulders or clearly marked lanes on the river—every safety contact begins with precise boat handling.

(SPD Marine Division conducting a stop with a personal watercraft beneath Jibboom Bridge. Photo Credit: OpGov.News.)

Keeping an Eye on Every Kind of Watercraft

Holiday patrols aren't limited to larger recreational boats.

Deputies also monitored personal watercraft, kayakers, paddleboarders, swimmers and people gathered along beaches and beneath bridges.

As boat traffic steadily increased throughout the afternoon, Sgt. Flores and Deputy Johnson continuously scanned the river, watching vessels approach from every direction.

"You have boats, jet skis, kayaks, paddleboards and swimmers all sharing the same water," Sgt. Flores said. "Everybody has to be paying attention because things can change very quickly."

As the Sheriff's patrol boat passed through the Discovery Park area, Sgt. Flores and Deputy Johnson noticed the Sacramento Police Department's Marine Division conducting a vessel stop beneath the Jibboom Street Bridge.

A Sacramento Police Department Marine Division patrol boat was assisting the operator of a personal watercraft while nearby recreational boat traffic continued moving safely through the channel, illustrating the close coordination among agencies patrolling the river during the holiday weekend.

Elsewhere, Sgt. Flores and Deputy Johnson checked on anchored vessels, monitored congested boating areas and maintained a visible law enforcement presence intended to discourage dangerous behavior before it escalated.

(Yolo County Sheriff’s Office Marine Patrol is also patrolling the waterways checking for BUI’s. Photo Credit: OpGov.News.)

Multiple Agencies, One Mission

The holiday operation brought together several marine law enforcement agencies working the Sacramento River.

Sacramento Police officers patrolled city waterways, while nearby Yolo County Sheriff's Office Marine Patrol deputies conducted their own Independence Day enforcement operation.

During the ride-along, Sgt. Flores and Deputy Johnson briefly met with Yolo County Sheriff's Office Sgt. Jeremy Hembree, who described his agency's holiday focus on boating under the influence enforcement and boating safety education. Hembree also discussed the specialized seated field sobriety tests used during boating under the influence investigations and explained how Yolo County adjusts staffing during major holiday weekends.

Although each agency patrols its own jurisdiction, communication between crews remained constant throughout the day.

Should a rescue, medical emergency or other urgent incident occur, the closest available marine unit responds regardless of agency boundaries.

As the Sun Went Down, the Job Continued

By early evening, the character of the Sacramento River began to change.

As communities across the nation celebrated America's 250th birthday, hundreds of boats slowly converged near the Tower Bridge, where families anchored side by side awaiting Sacramento's Independence Day fireworks display. The historic Delta King provided a striking backdrop as vessel after vessel filled the channel, creating one of the region's largest recreational boating gatherings of the year.

From the water, the scene looked less like a parade and more like a floating city.

(Tower Bridge sunset with the massive flotilla. Photo Credit: Sacramento Sheriff’s Marine Enforcement Detail.)

Children waved from pontoon boats. American flags fluttered from sterns. Kayakers threaded carefully between anchored vessels, while music drifted across the river and boaters settled in for an evening celebrating the nation's 250 years of independence.

By the time the flotilla had formed beneath the Tower Bridge, Sgt. Flores and Deputy Johnson had already spent hours patrolling waterways that stretched far beyond downtown Sacramento.

For most people, the evening marked the beginning of the celebration.

For the deputies aboard Sacramento County Sheriff's Marine Enforcement Detail patrol boats, it marked another phase of the job.

They continued weaving through the growing crowd of vessels—watching for impaired operators, responding to emergencies, assisting stranded boaters and remaining prepared should a celebration suddenly become a rescue.

"The best holiday for us is a quiet one," Sgt. Flores said. "If everybody gets home safely at the end of the night, that's a successful Fourth of July."

As darkness settled over the Sacramento waterfront and fireworks prepared to illuminate the sky above the Tower Bridge, the deputies who had spent the afternoon educating boaters, conducting safety checks and monitoring the river remained exactly where they had been all day—standing watch over one of Sacramento's busiest waterways while thousands celebrated a historic Independence Day.

Meet Your River Guardians

The Sacramento County Sheriff's Marine Enforcement Detail and Public Safety Dive Team work year-round to protect more than 300 miles of Sacramento County waterways. Together, the specialized teams provide boating law enforcement, emergency response, search-and-rescue operations and underwater recovery.

(Members of the Sacramento County Sheriff's Office Marine Enforcement Detail and Public Safety Dive Team pose for a group photo. From left to right: Deputy Nofziger, Sergeant Hutchins, Deputy Guibord, On-Call Deputy Mantei, Deputy Isaac Johnson, Sergeant Keegan, Sergeant Sam Flores, Deputy Solovyev, Sergeant Edward Igoe, and Detective Oliver. | Photo courtesy of the Sacramento County Sheriff's Office.)

As supervisor of the Sacramento County Sheriff's Marine Enforcement Detail and Public Safety Dive Team, Sgt. Sam Flores oversees one of the Sheriff's Office's most specialized public safety assignments. A 21-year veteran of the Sacramento County Sheriff's Office, Flores has spent the past three years leading the Marine Enforcement Detail and Public Safety Dive Team. Throughout OpGov.News' Fourth of July ride-along, Flores emphasized education over enforcement, saying most boating contacts are opportunities to prevent emergencies before they happen.

Deputy Isaac Johnson joined the Sacramento County Sheriff's Office in 2004 and served in the Main Jail, South Patrol Division and Central Patrol Division. Before joining the Marine Enforcement Detail, he worked as a Problem Oriented Policing officer throughout the Delta, where he developed extensive knowledge of the region's waterways, marinas and boating community. Johnson was recognized by the California Boating Safety Officers Association as its 2025 Officer of the Year. Throughout OpGov.News' ride-along, his years of boating experience were on full display as he expertly navigated crowded waterways and precisely positioned the patrol boat for safe boating contacts.

The public can follow the Marine Enforcement Detail and Public Safety Dive team on Instagram.

If you’d like to add or correct anything in this report, feel free to reach out to me or leave a comment below. Submit Sacramento County tips and story ideas to Sarah Denos at sarahkdenos@gmail.com.