Around noon on Saturday, November 28, Santa and Mrs. Claus will skip the sleigh and come up the Petaluma River on a Lind Marine tugboat. They'll tie up at the Turning Basin, where dancers from the Petaluma School of Ballet's "Nutcracker" will greet them. Then they'll cross the River Plaza parking lot to a tent outside Taps on the River for family photos. The Pacific Empire Chorus starts singing at 11:30, and Santa leaves at 1:30 p.m. for, as the Petaluma Downtown Association puts it, his next destination.
The town's other big holiday event happens on the water too. The Petaluma Yacht Club's Lighted Boat Parade is scheduled for Saturday, December 12, at the same basin. Both events need a navigable river. That river is maintained infrastructure, and right now Petaluma is between dredges.
The channel Santa uses was dredged last fall
The U.S. Army Corps of Engineers maintains the federal channel. It runs 100 feet wide from the mouth of the river up to Western Avenue, and the Turning Basin downtown is 300 to 400 feet wide. Both are authorized to a depth of 8 feet below mean lower low water, the low-tide reference point the Corps measures against. The City of Petaluma is the project's local partner and has to provide a site for the dredged material.
On paper, the river channel is dredged every four years. Before the most recent job, the last one was in fiscal year 2020. By 2025 the silt was back. Before last year's work, an August 2025 Press Democrat piece described the buildup and said the planned dredge would run from the downtown Turning Basin out to San Pablo Bay.
The work got done. The Corps project page lists FY2025 maintenance dredging as completed, on a $1,000,000 allocation for that year and a $996,000 budget for FY2026. The Petaluma Yacht Club says the river was last dredged in fall 2025. The 2025 Lighted Boat Parade went well. Latitude 38 counted more than 50 vessels on a 1.5-mile route lined with thousands of spectators, ranging from stand-up paddleboards to the 65-foot Sea Scout ship Compass Rose, a former naval vessel.
By June, the shallowest spots were already close to the mud
Silt comes back fast. In June 2026, less than a year after the dredge, the Corps surveyed the main channel. Its channel condition report dated September 15, 2026 lists the shallowest reading found in each quarter of the channel's width, measured across the 4.06-mile main channel.
| Section of the main channel | Authorized depth | Shallowest reading, June 19–21, 2026 survey |
|---|---|---|
| Left outside quarter | 8.0 ft | 1.7 ft |
| Left inside quarter | 8.0 ft | 1.5 ft |
| Right inside quarter | 8.0 ft | 1.7 ft |
| Right outside quarter | 8.0 ft | 0.2 ft |
These figures are the single shallowest point in each quarter, not the depth along the whole channel. The Corps also says the report is not a substitute for the controlling depths set by the San Francisco Bar Pilots. They are measured against the low-tide reference, so a higher tide puts more water over every one of those spots. Even so, one reading sits 2.4 inches above that reference, in a channel authorized for 8 feet.
The Corps has already scheduled the next round. Its FY2027 dredging plan, in the same September 17, 2026 report to the Harbor Safety Committee of the San Francisco Bay Region, lists the Petaluma River for about 150,000 cubic yards of clamshell dredging. The plan targets March 11 for solicitation, April 12 for bid opening and April 26 for contract award. That puts the next dredge after this holiday season, and well ahead of the four-year cycle printed on the project page.
Why the boat parade's date comes with a tide caveat
Visit Petaluma's 2026 holiday calendar lists the Lighted Boat Parade for Saturday, December 12, 2026. It adds that the date is "subject to change due to tides." The boats leave the Petaluma Marina at 5:30 p.m. and reach the Turning Basin at 6:00. The Downtown Association's own holiday page says the parade date is "determined by tides."
The Yacht Club's guidance for visiting boaters shows how much the tide matters on this river. Boats coming from south of the Richmond Bridge are told to arrive at the bridge as the flood tide begins and follow it about 15 miles up the channel and river. The club also says the Petaluma Marina, next to the Sheraton near the Haystack Landing Bridge, "has NOT been dredged and may not be accessible at zero tide," and that some sailboats may not get in even at high tide. The parade starts from that same marina.
For anyone watching from shore, the plan is simple. The parade runs 6 to 8 p.m. at the Petaluma Turning Basin, 12 C Street. It's free and needs no reservation. Check the Downtown Association's Lighted Boat Parade page the week of December 7, since the tide caveat means the date could still move.
The full calendar, river and land
Apart from the two river events, the season happens on streets and plazas, where the dates are fixed. Here is everything in order:
- Santa's Riverboat Arrival and Small Business Saturday, Saturday, November 28, 11:30 a.m. to 1:30 p.m. at River Plaza and downtown. The Downtown Association and the Petaluma Visitors Program will hand out Small Business tote bags with goodies and offers from local retailers while supplies last.
- Holiday Hen Hunt, November 28, 2026 through January 3, 2027. Holiday-costumed hens are hidden in participating downtown businesses. Write each hen's name on the official map and turn the map in for a prize drawing. Prizes include a $200 Shop Petaluma gift card plus gift cards from downtown merchants, and winners are announced January 4, 2027. Maps are available at the riverboat arrival, at participating shops and at the Petaluma Visitors Center, 210 Lakeville Street. The Downtown Association's office lists the same address, so completed maps go back to the same building either way.
- City of Lights Driving Tour, all of December. Free maps of the homes and businesses with the biggest light displays come out December 1 at the Visitor Center and on the Downtown Association's site.
- Petaluma Santa Safety Parade, Tuesday, December 1 through Thursday, December 3, leaving at 6:30 p.m. each night. The Petaluma Firefighters Foundation and the Petaluma Police Department's union run it through the three fire districts inside city limits, on a different route each night. The City's parade page has the route maps.
- Holiday Downtown Shopping Stroll, Saturday, December 5, 11 a.m. to 5 p.m. on Kentucky Street. Expect the Pacific Empire Chorus, the Apple Tree Morris Dancers, and another visit from Santa and Mrs. Claus.
- Light Up the Square, Saturday, December 5, 6 to 8 p.m. at Theatre Square. The free tree lighting includes live music, a laser show and holiday performances, and the tree is lit at 7:00.
- Lighted Boat Parade, Saturday, December 12, 6 to 8 p.m. at the Turning Basin, tides permitting.
- Penngrove Holiday Parade of Lights, Sunday, December 13, 6 to 7 p.m. on Main Street in Penngrove. It lines up at Penngrove Park, 11800 Main Street, and roads close from 5 to 7:30 p.m.
December 5 is the busiest day on the list. You can shop Kentucky Street in the afternoon and still be at Theatre Square for the 7:00 tree lighting.
What the river looks like after the lights come down
The survey dates show where things stand. The June 2026 survey is the one in the Corps' September report. The Corps' Petaluma River hydro-survey page already lists a newer condition survey from September 29 to October 1, 2026, and it posts soundings there for anyone who wants the latest picture of the channel. If the FY2027 plan stays on schedule, the contract is awarded in late April. Until then, the boats on the river are working with whatever silt has built up since fall 2025.
The City owns and runs the docks at the Turning Basin on a first-come, first-served basis, raises the D Street Bridge for boats and runs the fuel dock at the Petaluma Marina. As the Corps project page explains, the City is also the local partner on every federal dredge. Each holiday season on the water depends on that partnership and that schedule.
If you're walking down to the Turning Basin on November 28 or December 12, you're seeing one of the things that makes Petaluma Petaluma. Jennifer Bowes has followed this river town for years and would love to talk about the neighborhoods near the water, from homes within walking distance of the basin to the streets on the City of Lights map. Schedule a consultation whenever you're ready.
