San Pablo Bay – Enviro Updates

SuzanneDecember 23, 2024December 25, 2024Transportation, WildlifeHighway 37, salta marsh, San Pablo Bay, sea level rise

Caltrans to hold Jan. 14 meeting on Highway 37 project, environmental opportunities

Mary Callahan, PRESS DEMOCRAT
Plans for an overhaul of Highway 37 between Sears Point and Mare Island to ease congestion and gird the road against the rising waters of San Pablo Bay will be aired at Jan. 14 meeting hosted by Caltrans.

The meeting will be held from 6 p.m. to 7:30 p.m. Jan. 14.
Interested people can participate remotely on Zoom, using the link https://us06web.zoom.us/j/85317647303#success.

The hybrid meeting was scheduled to allow for discussion of a newly released draft supplemental environment impact report, now open for public review and comment. It incorporates changes to near-term road improvements, as well as the addition of a major marshland rehabilitation effort.

But there should be room for discussion beyond that, as well.

“The meeting on the 14th is going to mostly focus on the content of the draft supplemental EIR,” said Skylar Nguyen, senior environmental scientist with Caltrans. “That’s the focus, and that’s what we are presenting on, but we would be trying to answer as many questions as we can.”

The newly released environmental document relays in detail plans to restore and reinvigorate about 1,200 acres in and around what’s called the Strip Marsh East, a degraded area of tidal salt marsh west of Mare Island on the north shore of San Pablo Bay. The marsh provides habitat to multiple protected species and offers the chance for a nature-based buffer against sea level rise and flooding along about 3.5 miles of highway.

SuzanneDecember 20, 2024December 27, 2024Habitats, Water, WildlifeChinook salmon, fish hatchery, salmon habitat, San Pablo Bay, Sonoma Creek, Sugarloaf Ridge State Park

Spawning Chinook salmon return to Sonoma Creek in wake of recent storms

Martin Espinoza, PRESS DEMOCRAT

Copious early rainfall and efforts aimed at restoring local salmon and steelhead trout habitat have made such scenes possible, local ecologists say.

A female Chinook salmon swam steadily against the current in a shallow section of Sonoma Creek as several male fish splashed about behind her, jockeying for position, waiting for her to lay her eggs.

Just a few yards downstream on Wednesday, near the bank of the creek, another female rolled onto her side and smacked the gravel and rocks with her tail, doing her part to dig a “redd” or nest as the current flushed away silt and sediment that can be harmful to egg development.

This spawning scene for Chinook, or king salmon, in the headwaters of Sonoma Creek within Sugarloaf Ridge State Park is an uncommon sight for most local residents.

But since late November, hundreds of Chinook have traveled up the watershed from San Pablo Bay and been spotted in numerous tributaries that drain Sonoma Valley and its surrounding elevations.

Heavy rains in November and December have created ideal stream flows that have allowed spawning salmon to make their way into the region’s headwaters, said Steven Lee, research program manager of the Sonoma Ecology Center, which monitors the health of the Sonoma Creek watershed.

SuzanneFebruary 14, 2024February 14, 2024TransportationHighway 37, salt marsh, San Pablo Bay, tidal ecosystem

New Highway 37 planning structure elevates focus on environment, San Pablo Baylands

Mary Callahan, THE PRESS DEMOCRAT

The people who are planning the long-needed improvements on heavily congested Highway 37 are faced with more than just the amount of time commuters spend in gridlock each day en route to and from jobs in Marin and Sonoma counties.

There also are climate and environmental concerns along the sensitive shoreline of San Pablo Bay — the focus of tidelands restoration investments topping $600 million already. The diminished marshes and wetlands that once lined the greater San Francisco Bay are productive habitats that foster wildlife, filter water, sequester carbon and can help buffer the land from sea level rise.

But the varying needs don’t always line up easily. What solves one problem could exacerbate another.

And there is distrust among some who believe a short-term plan to widen the eastern stretch of 37 between Sears Point and Mare Island on slightly raised berms does more harm than good, despite the cost and time involved in a long-term plan to raise the whole highway.

They include Congressman Jared Huffman, who has, as he attests, “been lobbying nonstop” to change the approach to the highway redesign, moving directly to a full causeway instead of a freeway widening project “straight out of the 1980s.”

But in an effort to assure environmental stakeholders that their interests are on equal footing as work on the 21-mile highway corridor goes forward, the multicounty State Route 37 Partnership, currently dominated by transportation agencies, will now include key leaders from “environmentally oriented” state groups.

And it will have a new name: The Baylands Restoration and Transportation Expanded Partnership.

SuzanneSeptember 18, 2022September 21, 2022Climate Change & Energy, Habitats, Transportation, Wildlifebike lanes, bike/pedestrian bridge, flooding, habitat restoration, Highway 37, marsh migration, San Pablo Bay, sea level rise, wetlands

Hwy. 37 could be under water by 2050. Here’s how Caltrans plans to keep traffic flowing

Colin Atagi, NORTH BAY BUSINESS JOURNAL

The favored plan also proposes the route have a 60 mph speed limit, as well as two lanes in each direction with bicycle and pedestrian paths. The plan is in its early stages and officials haven’t identified a cost or funding source.

Caltrans, in order to keep traffic flowing decades from now, intends to build an elevated road along Highway 37 to combat rising water levels, which are expected to eventually inundate the North Bay arterial.

The proposed project essentially stretches across the existing route along San Pablo Bay and through Marin, Sonoma, Napa and Solano counties.

It preserves travel patterns, allows landward marsh migration and is resilient to sea level rises, officials said in explaining its benefits.

SuzanneApril 30, 2022May 3, 2022Climate Change & Energy, Habitats, Wildlifecoastal wetlands, salt marsh, San Francisco Bay, San Pablo Bay, sea level rise

Op-Ed: Expand and restore Bay wetlands to fight climate change

Carin High and Arthur Feinstein, THE MERCURY NEWS

Report must spur us to look at actions we can take to reduce emissions and prepare our communities to adapt

The latest report from the Intergovernmental Panel on Climate Change (IPCC) from the world’s scientific community leaves no doubt that we must take urgent action on climate change while we still have a chance to prevent the most destructive impacts to the globe’s communities and ecosystems. This report must spur every one of us to look at actions we can take in our region to rapidly reduce emissions and prepare our communities to adapt.

More than issuing a wake-up call, this report offers concrete actions that we can take and emphasizes the valuable role of nature-based solutions that reduce climate change risks, while providing numerous benefits to both our communities and the planet.

One of the most effective nature-based solutions is the expansion and restoration of coastal wetlands. Wetlands not only provide valuable habitat for fish and birds, acting as the base of the marine ecosystem, but wetlands have also been shown to be one of nature’s most efficient plant communities for capturing carbon from the atmosphere, trapping organic carbon quicker and better than forests, thus reducing carbon in the atmosphere.

Coastal wetlands also help to buffer our communities from sea level rise, acting as a sponge to capture flood waters before they reach our homes and businesses. In short, wetlands, if protected, expanded and restored, are one of the most valuable ecosystem tools for reducing the impact of climate change.

SuzanneOctober 10, 2021August 3, 2022Habitats, Land Use, Local Organizations, Water, WildlifeSan Pablo Bay, Sears Point, Sonoma Land Trust, wetlands, wetlands restoration

Sonoma Land Trust builds ‘living shoreline’ to thwart erosion at Sears Point

Guy Kovner, PRESS DEMOCRAT

Julian Meisler stood on a human-made levee at low tide along the shore of San Pablo Bay, surveying 1,000 acres of a dark brown, mostly barren mud flat.

“That’s exactly what we want to see,” said Meisler.

He is the project manager of Sonoma Land Trust’s 15-year campaign to restore wetlands intended to protect the Highway 37 corridor — with both a roadway and rail line — from flooding exacerbated by sea level rise.

And now the levee, a victim of erosion from wind waves, is being fortified by an unprecedented restoration project using hundreds of trees — some salvaged from wildfire burn areas — to blunt the waves and promote wildlife habitat.

It’s been six years since the Santa Rosa nonprofit’s Sears Point project breached the levee built 140 years ago to create farmland, and tides have since deposited two to four feet of sediment in the nascent wetlands.

At high tide, the mud flat becomes a lagoon up to two and a half feet deep, harboring shorebirds, waterfowl, river otters, bat rays and leopard sharks. People ply the water with canoes, kayaks and standup paddleboards, while hiking trails lead along the shore in what is now the San Pablo Bay National Wildlife Refuge.

The project’s ultimate goal remains years away, when six feet of sediment gives root to vegetation transforming the wetlands into a verdant marsh, teeming with wildlife and absorbing high tides.

SuzanneJanuary 20, 2021January 30, 2021Climate Change & Energy, Habitats, Water, Wildlifehabitat restoration, marsh migration, salt marsh, San Pablo Bay, sea level rise, Sonoma Creek, wetlands

A struggling California marsh gets an overhaul to prepare for rising seas

Alastair Bland, AUDUBON MAGAZINE

The restoration of the Sonoma Creek in the San Francisco Bay Area not only corrects problems of the past, but also looks to the future.

The sun shines meekly through a veil of morning fog and wildfire smoke while several figures in orange vests, hard hats, and face masks move slowly through a marsh on the north shore of San Francisco Bay. Wielding brooms, they jab lightly at the vegetation, ruffling the tufts of native pickleweed. As biological monitors, their job is to flush out small animals—especially the endangered salt marsh harvest mouse—and usher them from the path of a rumbling excavator, which is about to dig a deep groove in the slick mud.

It’s early October at the mouth of Sonoma Creek, where an unusual conservation project that broke ground five years ago is nearing the finish line. Audubon California and partner agencies are turning what was once a 400-acre stagnant backwater into a thriving wetland ecosystem that will serve as a refuge from rising seas for decades to come.

This revitalization of Sonoma Creek marsh is more a story of creation than one of restoration. The place is a product of the Gold Rush era, when torrents of unearthed sediment choked the Sacramento River system and later settled downstream. While hawks, grebes, and plovers made use of the area, which is managed today as part of the San Pablo Bay National Wildlife Refuge, the marsh wasn’t exactly a haven. The unnatural mud buildup was too rapid, preventing the formation of the channel systems that typically run through wetlands like arteries and allow a healthy water exchange with adjacent bays and estuaries. “If this was a natural marsh, it would look like a lung—it would breathe,” says Andrea Jones, director of bird conservation at Audubon California.
Continue reading “A struggling California marsh gets an overhaul to prepare for rising seas”

SuzanneFebruary 11, 2019February 18, 2019Climate Change & Energy, TransportationHighway 37, San Pablo Bay, sea level rise, wetlands, wetlands restoration

Major fixes for addressing traffic, sea level rise on Highway 37 identified

Matt Brown, PETALUMA ARGUS-COURIER

Imagine driving along a four-lane elevated causeway above the brackish San Pablo Bay, shaving more than an hour off the normal Highway 37 commute.

Transportation planners have for years envisioned remaking the 20-mile route from Novato to Vallejo into the North Bay’s most important east-west corridor. Now, they are ready to act.

Officials in Marin, Sonoma, Napa and Solano counties have been meeting for several years, pondering solutions to Highway 37’s notorious bottlenecks, where 45,000 cars per day stretch the normal 20-minute commute to as much as 100 minutes. They have also acknowledged that traffic improvements will be irrelevant without addressing sea level rise — without action, the highway will be underwater in 30 years.

The first fixes will be completed within the next seven years, officials say, and a new formal partnership defines the roles various agencies will play and sets the process in motion.

Branded as Resilient State Route 37, the program that includes the transportation agencies of the four counties plus Caltrans and the Bay Area Toll Authority, is planning vast changes to the highway. The Sonoma County Transportation Authority signed onto the partnership on Monday.

SuzanneJanuary 20, 2019WaterPetaluma River, San Pablo Bay, tidal flow

Sense of Place: Petaluma River once considered a creek

Arthur Dawson, THE PRESS DEMOCRAT

The Petaluma River flows from its headwaters on Sonoma Mountain, past the city of Petaluma and out to San Pablo Bay. With a watershed smaller than that of neighboring Sonoma Creek, it was called Petaluma Creek up until about 1960, though most of it is actually a tidal slough.

River, creek, slough … What’s the difference?

Sonoma Creek’s flow typically exceeds that of the Petaluma River, sometimes by a wide margin. During the 2006 New Year’s flood, the Petaluma River was running at 9,600 cubic feet a second while Sonoma Creek hit 20,000 cubic feet a second (the Missouri River, a hundred miles below its headwaters, only occasionally tops that). In fact, some 19th-century mapmakers labeled the stream the “Sonoma River.” During a winter storm, it easily earns the title, though in the summer it sometimes dries up in places.

In the United States, a creek is “normally smaller than and often tributary to a river.” Originally a British term for “a narrow sheltered waterway, especially an inlet in a shoreline or a channel in a marsh,” its meaning changed over time. As settlement progressed inland above saltwater and tides, the word followed and was applied to freshwater channels, too.

Around San Francisco Bay, sloughs are tidal channels where salt and freshwater mix (elsewhere they can be freshwater side channels). At low tide that brackish water flows “downstream” into the Bay, but when the tide comes in, the flow reverses and goes “upstream.” Our sloughs are similar to British “creeks.”

So how did Petaluma Creek become the Petaluma River? As Newt Dal Poggetto, a lifelong county resident described it: “It was Petaluma Creek until Clem Miller got it named a river.” After being elected to the House of Representatives in 1959, Miller “found out that if you could change the name of a creek to a river, you qualified for the Army Corps of Engineers budget. Spending money! So he got Congress to change the name, which qualified it to get federal funding for dredging and building levees.”

SuzanneSeptember 28, 2017Climate Change & Energy, Transportation, Water, Wildlifecommuters, Highway 37, salt marsh, San Pablo Bay, sea level rise, wetlands, wetlands restoration

Op-Ed: Rebuild State Route 37 to address sea level rise and traffic

Fraser Shilling and Steven Moore, SAN FRANCISCO CHRONICLE
State Route 37 — which snakes across Solano, Napa, Sonoma and Marin counties in Northern California — is living on borrowed time.
At times, the highway appears to be impassable because of the 44,000-plus vehicles that travel portions of it every day. However, the effects of climate change will render this critical northern Bay Area crossing absolutely impassable during high tides unless we collaborate regionally on the best way to balance traffic needs and the valuable wetlands the roadway straddles.
The societal challenge we face is adapting to environmental changes in a resilient way while being ecologically sustainable. In the Bay Area, rebuilding State Route 37 to avoid its potential loss in the next 20 years because of flooding will be our first regional foray into adapting to sea level rise — an issue that will threaten most of our shoreline infrastructure, coastal ecosystems and population centers.
State Route 37 provides a critical “northern crossing” of the San Pablo Bay as it stretches from Interstate 80 in the east, to Highway 101 in the west, serving local residents, commuters and visitors, as well as freight haulers traveling between the Central Valley and the Santa Rosa area. Today the highway is built atop a berm, an outdated method of building roads across marshes and waterways that constricts the ability of the bay to improve water quality by filtering out pollutants, produce more fish and wildlife, and absorb floods.
The temptation may be to work on a quick, easy fix that reduces traffic congestion while ignoring long-term consequences. These consequences include traffic congestion returning to current levels in a few years, and the San Pablo Bay tidal marshes being cut off from the life-giving ebb and flow of the tides.
Read more at: Rebuild State Route 37 to address sea level rise and traffic – San Francisco Chronicle

Environmental Center of Sonoma County

Tag: San Pablo Bay