Near the Byxbee Park vehicle entrance, a slope of young native plants runs about 500 feet from the edge of the city's water treatment plant down into the tidal channels. Small white poles stand between the plants. Researchers will use them to track how the slope responds to tides and to sea level over time. The slope opened on Sept. 10, 2026, as the Bay Area's first nature-based horizontal levee.
About half a mile northeast of the same parking lot, a 0.8-mile stretch of the Adobe Creek Loop Trail is closed for construction until Oct. 30.
This fall the preserve's newest feature and its one active trail closure sit side by side at the Byxbee end. Everything else around them comes in dated windows. Weekend-only center hours, free walks scheduled weeks ahead, a shorebird season that keeps building, and two sets of king tides before the year ends all make the Baylands a place to plan by date from now through January.
What Opened Next to the Treatment Plant
The levee sits between the bay's tidal channels and the Regional Water Quality Control Plant at 2501 Embarcadero Way. Construction on the $4.6 million project finished in August. The slope holds more than 2,000 native plants and hundreds of native seeds, all watered with the plant's treated effluent. Traditional levees are steeper and often built from rock and concrete. This one is vegetated earth on a gradual grade into the marsh.
Four community organizations grew and planted the flora: the Association of Ramaytush Ohlone, Save the Bay, Nuestra Casa and Environmental Volunteers. They also wrote the interpretive signs on the marshland's ecological and social history. Those signs give the site a different feel from the rest of the preserve. They are new, written by local groups, and placed next to a habitat that is only weeks old.
The slope also does a job. It is another filtering stage for the treatment plant, which handles wastewater from Palo Alto, East Palo Alto, Mountain View, Los Altos, Los Altos Hills and Stanford University. It is part of a $369 million renovation of the plant that began in 2022 and is scheduled to finish in 2028. Over the coming years, researchers from the U.S. Geological Survey, California State University Channel Islands and UC Davis will study what the slope offers wildlife, including the endangered salt marsh harvest mouse.
At the opening, Mayor Vicki Veenker said the project combines habitat restoration and climate adaptation, where many city projects deliver only one or the other, according to Palo Alto Online. For a visitor, the practical point is that the plants went in this summer. A walk in October shows the slope near its starting point, and every later visit shows how far it has filled in.
The Closure a Few Minutes Up the Trail
The Adobe Creek Loop closure belongs to Valley Water's seismic retrofit and rehabilitation of the Palo Alto Flood Basin Tide Gate Structure. The structure sits where the basin meets San Francisco Bay, and the work replaces six water flow gates. The 0.8-mile segment is closed Sept. 1 through Oct. 30, 2026, and flaggers are on site when heavy equipment is running.
A second project overlaps it. The city's FY 2026 resurfacing schedule runs from August through November 2026. It lists repaving on part of the Adobe Creek Trail in early October, with signed detours through the Baylands. The city's page gives a schedule and no completion update. As of this week, the paving has not been confirmed finished. Check that page before a long walk or ride along Adobe Creek.
Put together, the first half of October at the Byxbee end means a brand-new feature to see, one trail segment closed and a possible paving detour nearby. After Oct. 30, the loop segment is scheduled to reopen, just as the winter bird season gets going.
Why November Through January Is the Season for This Edge
The Santa Clara Valley Bird Alliance describes September through November as a turnover. Some birds leave for the south, northern birds arrive for the winter, and others pass through. Bayfront areas fill with wintering waterfowl, shorebirds and gulls. The alliance's Palo Alto Baylands guide puts the season for large shorebird numbers at August through April. Its key birds include Ridgway's Rail, Semipalmated Plover, Whimbrel, Lesser Yellowlegs and Peregrine Falcon. On the mudflats, the same guide lists Long-billed Curlew, Marbled Godwit, Willet, dowitchers, Dunlin, and Western and Least Sandpipers.
Byxbee Park has its own seasonal list. The alliance's guide for that hillside covers October through March. It includes Greater White-fronted and Cackling Geese, winter ducks, curlews, sandpipers, gulls, Short-eared Owl, American Pipit, and wintering sparrows and warblers. These self-guided pages were written in 2020 and 2022. They describe what is typical for the season, not what was seen last weekend.
Then come the king tides. The California King Tides Project lists Nov. 24 to 26 and Dec. 23 to 25, 2026, then Jan. 21 to 22, 2027. Northern California locations may also see Dec. 22, Jan. 20 or Jan. 23. The project's tide map has times for specific locations. Because the levee was finished in August, these will be its first king tides. A visit on one of those mornings shows the highest tides of the year against a marsh slope that is only a few months old.
Environmental Volunteers led a King Tides Walk at the Baylands on Dec. 6, 2025, so its calendar is the place to check for a walk this season.
Dates Already on the Calendar
Here are the free and guided programs posted so far, in order:
- Oct. 9, 10 a.m. to 1 p.m. Science Friday at the EcoCenter, themed Spooky Critters. Bird experts will have an outdoor display at the Duck Pond.
- Oct. 10, 10 a.m. to 1 p.m. Science Saturday at the EcoCenter, with hands-on activities about spiders, snakes and owls.
- Oct. 11, 8:30 to 11 a.m. The Santa Clara Valley Bird Alliance's all-ages field trip at Palo Alto Baylands, covering shorebirds, wading birds, ducks, raptors and songbirds.
- Oct. 17, 5 to 6:30 p.m. Twilight Explorations, a free docent-led walk for ages 6 and up. Advance registration is encouraged.
- Oct. 18, 8:30 to 10:30 a.m. The Young Birders Club's Shorebirds and Shovelers at the Palo Alto Baylands. Parents and siblings may come along.
- Nov. 7, 10 a.m. to 1 p.m. Science Saturday on plate tectonics, held on the EcoCenter's outdoor deck.
- Nov. 21, 10 to 11:30 a.m. Baylands Explorations, a free guided walk for ages 6 and up.
- Dec. 19, 10 to 11:30 a.m. A second Baylands Explorations walk, also free and for ages 6 and up.
The Nov. 21 walk falls three days before the first king tide window. The Dec. 19 walk comes a few days before the second.
Hours That Shape Every Visit
The preserve is open from 8 a.m. to sunset. The indoor stops are open on far fewer days. The city lists the Lucy Evans Baylands Nature Interpretive Center as open Saturdays from noon to 3 p.m. and Sundays from 10 a.m. to 3 p.m., and closed Monday through Friday. The city counts the boardwalk as part of the Interpretive Center. That same page also carries an older announcement with no year on it, so confirm the hours before planning around them.
The Environmental Volunteers EcoCenter, across from the Duck Pond, is open most Fridays and Saturdays from 10 a.m. to 1 p.m. Its calendar confirms specific dates. It closes for the holidays from Dec. 24 through Jan. 3. That closure overlaps Dec. 24 and 25 of the December king tide window, so a visit on either of those days means the trails and the levee without the EcoCenter.
With those hours in mind, a full Saturday works best between late morning and early afternoon. Start at the EcoCenter and the Duck Pond, walk to the Lucy Evans boardwalk once it opens at noon, then drive to the Byxbee entrance to see the new levee in the afternoon light. After Oct. 30, that drive can continue onto the reopened Adobe Creek Loop.
The new levee is a good example of building that responds to its site. Fabiane Maluchnik brings the same thinking to Palo Alto homes, where the right improvements depend on the lot, the light and the timing. If you're planning projects for the months ahead, schedule a clarity call to discuss your home.
