Hooks Island

Island in San Francisco Bay, California

37°27′22″N 122°05′51″W / 37.45611°N 122.09750°W / 37.45611; -122.09750Adjacent toSan Francisco BayTotal islands1Area36^[1] acres (15 ha)Administration

United States

State

CaliforniaCountySanta ClaraCityPalo Alto

Hooks Island is an uninhabited, approximately 36-acre (15 ha)^[1] tidal salt marsh island^[2] in San Francisco Bay, in Palo Alto, California, United States. In the 2010s, it was observed to be a home for tens of near-endangered California clapper rails.

Geography

Hooks Island (center) in United States Geological Survey maps over time
1899
1955
2018

Like many areas on the periphery of San Francisco Bay, Hooks Island is classified as California coastal salt marsh. As part of the Palo Alto Baylands Nature Preserve, it is a protected area, and local governments prohibit humans from traveling to it;^[3] like many parts of the San Francisco Bay Area, development (especially of housing) is not permitted.^[4]^[5]

It is home to members of several endangered species, as well as five transmission towers (belonging to the Ravenswood-Ames 115kV transmission line). It is described in a 2020 Santa Clara Valley Water report as an "undisturbed tidal salt marsh" consisting partly of an "estuarine intertidal emergent wetland".^[1] Its northern tip, located at 37°27′30″N 122°05′49″W / 37.45833°N 122.09694°W / 37.45833; -122.09694, is known as Hooks Point.^[6] Hooks Island is located directly east of the Palo Alto Baylands Sailing Station.^[3]

Flora

Several species of cord grass grow on the island and provide a habitat for various animals. In 1997, a study discovered that the native cord grass, Sporobolus foliosus, was being displaced on Hooks Island by the invasive species Spartina alterniflora, which tends to grow in denser stands than the native grass; this "makes it harder for animals to move around".^[7]

The S. alterniflora, originally introduced to the area in 1973 by an Army Corps of Engineers project to control erosion and restore marshes in the Bay, hybridized with native cord grasses, forming dense growth above ground and a dense root system below; this displaced both surface-dwelling animals and those which lived beneath the mud.^[8]

When the 1973 attempt to reverse damage to the marshes was eventually found to be harmful for wildlife, it was itself reversed—the California Coastal Conservancy's San Francisco Estuary Invasive Spartina Project was able, with the aid of the herbicide imazapyr as well as physical removal methods, to heavily reduce the overall footprint of S. alterniflora growth across a 70,000-acre (28,000 ha) "work area", from 805 acres (326 ha) in 2005 to 28 acres (11 ha) in 2016 (at which point $30 million had been spent).^[8] According to the manager of the manager of the San Francisco Bay National Wildlife Refuge Complex, the project was a "resounding success".^[8]

Despite the success of the project, however, federal officials required the conservancy to reverse part of their reversal of the initial reversal, after it was found that the (then-endangered) California clapper rail had taken up residence in thickets of the invasive species.^[8]^[9]

Fauna

Numerous birds have been known to live on Hooks Island, such as the near-threatened California clapper rail.^[10] In 2011, a Point Reyes Bird Observatory Conservation Science report found that approximately 14 clapper rails had been found in the Baylands, and 19 clapper rails were "known to exist" at Palo Alto Harbor and Hooks Island.^[11] Other estimates of the total Baylands population in 2011 included "approximately 15–29 individuals".^[2] However, in 2010, there had been as many as 22 clapper rails.^[11] In 2013, allegations were made that feral cats were living on Hooks Island and killing the clapper rails.^[11] While it is broadly accepted that there are many cats in the San Francisco Bay Area,^[12] the extent of their presence in the Palo Alto Baylands (and of their role in the killing of clapper rails) was disputed. While the city's division manager of open space, parks and golf claimed to have "personally seen feral cats hunt and catch birds in the Baylands Nature Preserve", a volunteer at the Palo Alto Humane Society offered a rejoinder to this claim, stating that "compared to people, the damage feral cats do is minor".^[11]

The salt marsh harvest mouse
The California clapper rail

References

^ ^a ^b ^c "Palo Alto Flood Basin Tide Gate Structure Replacement Project" (PDF). Santa Clara Valley Water. September 2020. p. 42. Archived (PDF) from the original on 2 October 2020. Retrieved 15 September 2020.
^ ^a ^b Petra Unger; Diana Edwards (December 2017). Palo Alto Baylands: Existing Conditions (Report). AECOM, 2020 L Street, Suite 400, Sacramento, CA 95811. Archived from the original on 16 September 2020. Retrieved 15 September 2020.
^ ^a ^b "San Francisco Bay Area Water Trail: Site Description for Palo Alto Baylands Sailing Station" (PDF). California State Coastal Conservancy. 29 May 2012. Archived (PDF) from the original on 6 June 2017. Retrieved 15 September 2020. Boat users need to be sensitive to wildlife, high tide refugia, and marsh habitat, observe buffer distances, and not land in any location besides the Sailing Station, including Hooks Island, located across from the Sailing Station. Additionally, there are areas located nearby where a boater who lands inappropriately could disturb nesting Western burrowing owls (Mountain View) or Western snowy plovers (Alviso or Ravenswood). The City of Palo Alto Municipal Code prohibits trampling vegetation and/or harassing wildlife and non‐permitted activities in the marsh constitute violations and are subject to fines of $1,000 or more
^ "Palo Alto Open Space". City of Palo Alto. Archived from the original on 14 May 2018. Retrieved 15 September 2020.
^ "History of Baylands Nature Preserve". City of Palo Alto. 1 June 2007. Archived from the original on 2 October 2020. Retrieved 15 September 2020.
^ "GNIS Detail – Hooks Point". U.S. Geological Survey Geographic Names Information System. 9 April 1999. Retrieved 15 September 2020.
^ Dremann, Sue (1 November 2013). "Saving the Baylands: Scientists, nonprofit groups work to protect Palo Alto marshlands". Palo Alto Online. Archived from the original on 6 February 2017. Retrieved 15 September 2020.
^ ^a ^b ^c ^d Rogers, Paul (17 April 2016). "San Francisco Bay: Massive effort to remove aquatic invader nearly finished". The Mercury News. Bay Area News Group. Archived from the original on 3 May 2017. Retrieved 15 September 2020.
^ Poor, William (7 August 2018). "This monster plant is taking over Silicon Valley—should we let it?". The Verge. Archived from the original on 26 September 2020. Retrieved 15 September 2020.
^ BirdLife International (2020). "Rallus obsoletus". IUCN Red List of Threatened Species. 2020: e.T22731577A178663850. doi:10.2305/IUCN.UK.2020-3.RLTS.T22731577A178663850.en. Retrieved 11 November 2021.
^ ^a ^b ^c ^d Dremann, Sue (14 September 2013). "Wildlife experts: Cats are killing Baylands wildlife". Palo Alto Weekly. Retrieved 15 September 2020.
^ Eslinger, Bonnie (14 November 2013). "East Palo Alto man says city is a dumping ground for feral cats". The Mercury News. San Mateo County Times, Bay Area News Group. Archived from the original on 10 May 2017. Retrieved 15 September 2020.

Protected areas of California

National Park System

National Parks	Channel Islands Death Valley Joshua Tree Kings Canyon Lassen Volcanic Pinnacles Redwood Sequoia Yosemite
National Preserves	Mojave
National Monuments	Cabrillo Castle Mountains César E. Chávez Devils Postpile Lava Beds Muir Woods Tule Lake
National Seashores	Point Reyes
National Historical Parks	Rosie the Riveter World War II Home Front San Francisco Maritime
National Historic Sites	Eugene O'Neill Fort Point John Muir Manzanar
National Memorials	Port Chicago Naval Magazine
National Recreation Areas	Golden Gate Santa Monica Mountains Whiskeytown–Shasta–Trinity

State Parks

State Parks	Ahjumawi Lava Springs Andrew Molera Angel Island Año Nuevo Anza-Borrego Desert Arthur B. Ripley Desert Woodland Bidwell–Sacramento River Big Basin Redwoods Border Field Bothe-Napa Valley Burton Creek Butano Calaveras Big Trees Castle Crags Castle Rock Caswell Memorial China Camp Chino Hills Clear Lake Coast Dairies Crystal Cove Cuyamaca Rancho D. L. Bliss Del Norte Coast Redwoods Donner Memorial Dos Rios Ranch Ed Z'berg Sugar Pine Point Emerald Bay The Forest of Nisene Marks Fort Ord Dunes Fremont Peak Garrapata Gaviota Great Valley Grasslands Grizzly Creek Redwoods Grover Hot Springs Hearst San Simeon Hendy Woods Henry Cowell Redwoods Henry W. Coe Humboldt Lagoons Humboldt Redwoods Jedediah Smith Redwoods Julia Pfeiffer Burns Leo Carrillo Limekiln MacKerricher Malibu Creek Manchester McArthur–Burney Falls Memorial McLaughlin Eastshore Mendocino Headlands Mendocino Woodlands Montaña de Oro Morro Bay Mount Diablo Mount San Jacinto Mount Tamalpais Navarro River Redwoods Pacheco Palomar Mountain Pfeiffer Big Sur Placerita Canyon Plumas-Eureka Point Mugu Portola Redwoods Prairie Creek Redwoods Red Rock Canyon Richardson Grove Rio de Los Angeles Robert Louis Stevenson Russian Gulch Saddleback Butte Salt Point Samuel P. Taylor San Bruno Mountain Sinkyone Wilderness South Yuba River Sue-meg Sugarloaf Ridge Sutter Buttes Tolowa Dunes Tomales Bay Topanga Trione-Annadel Van Damme Washoe Meadows Wilder Ranch
State Natural Reserves	Antelope Valley California Poppy Armstrong Redwoods Azalea Caspar Headlands John B. Dewitt John Little Jug Handle Kruse Rhododendron Los Osos Oaks Mailliard Redwoods Mono Lake Tufa Montgomery Woods Point Lobos Smithe Redwoods Torrey Pines Tule Elk
State Marine Reserves	Albany Anacapa Island SMR Asilomar Begg Rock Big Creek Bodega Head Cabrillo Carmel Pinnacles Carrington Point Del Mar Landing Elkhorn Slough Emeryville Crescent Estero de Limantour and Drakes Estero Fitzgerald Gerstle Cove Gull Island Harris Point Judith Rock Laguna Beach Long Point Lovers Point Montara and Pillar Point Moro Cojo Slough Morro Bay Natural Bridges Piedras Blancas Point Arena Point Buchon Point Cabrillo Point Dume Point Lobos Point Reyes Point Sur Richardson Rock Russian River Santa Barbara Island Scorpion Sea Lion Gulch Skunk Point South Cape Mendocino Stewarts Point Vandenberg
State Historic Parks	Anderson Marsh Antelope Valley Indian Museum Bale Grist Mill Benicia Capitol Bidwell Mansion Bodie California Citrus California State Indian Museum Chumash Painted Cave Colonel Allensworth Columbia El Presidio de Santa Barbara Empire Mine Folsom Powerhouse Fort Humboldt Fort Ross Fort Tejon Governor's Mansion Hearst Castle Indian Grinding Rock Jack London La Purísima Mission Leland Stanford Mansion Los Angeles Los Encinos Malakoff Diggins Marconi Conference Center Marsh Creek Marshall Gold Discovery Monterey Old Sacramento Old Town San Diego Olompali Pigeon Point Light Station Pío Pico Point Sur Railtown 1897 Rancho Petaluma Adobe San Juan Bautista San Pasqual Battlefield Santa Cruz Mission Santa Susana Pass Shasta Sonoma Sutter's Fort Tomo-Kahni Wassama Round House Watts Towers Weaverville Joss House Will Rogers William B. Ide Adobe Woodland Opera House
State Beaches	Asilomar Bean Hollow Bolsa Chica Cardiff Carlsbad Carmel River Carpinteria Caspar Headlands Cayucos Corona del Mar Crown Memorial Dockweiler Doheny El Capitán Emma Wood Gray Whale Cove Greenwood Half Moon Bay Huntington Leucadia Lighthouse Field Little River Malibu Lagoon Mandalay Manresa Marina McGrath Montara Monterey Moonlight Morro Strand Moss Landing Natural Bridges New Brighton Pacifica Pelican Pescadero Pismo Point Dume Point Sal Pomponio Refugio Robert H. Meyer Memorial Salinas River San Buenaventura San Clemente San Elijo San Gregorio San Onofre Santa Monica Schooner Gulch Seacliff Silver Strand Sonoma Coast South Carlsbad Sunset Thornton Torrey Pines Trinidad Twin Lakes Westport-Union Landing Will Rogers William Randolph Hearst Memorial Zmudowski
State Recreation Areas	Admiral William Standley Auburn Austin Creek Benbow Benicia Bethany Reservoir Brannan Island Candlestick Point Castaic Lake Colusa-Sacramento River Folsom Lake Franks Tract George J. Hatfield Harry A. Merlo Kenneth Hahn Kings Beach Lake Del Valle Lake Oroville Lake Perris Lake Valley Martial Cottle McConnell Millerton Lake Picacho Providence Mountains Salton Sea San Luis Reservoir Silverwood Lake Standish-Hickey Tahoe Turlock Lake Woodson Bridge
State Vehicular Recreation Areas	Carnegie Clay Pit Heber Dunes Hollister Hills Hungry Valley Oceano Dunes Ocotillo Wells Prairie City
Other	Burleigh H. Murray Ranch California State Capitol Museum California State Mining and Mineral Museum California State Railroad Museum Castro Adobe Delta Meadows Estero Bay Hatton Canyon Indio Hills Palms Point Cabrillo Light Ishxenta State Park Point Montara Light Reynolds Wayside Campground San Timoteo Canyon Stone Lake Verdugo Mountains Ward Creek Wildwood Canyon

National Forests and Grasslands

National Forests and Grasslands	Angeles Butte Valley NG Cleveland Eldorado Humboldt–Toiyabe Inyo Klamath Lake Tahoe Basin Lassen Los Padres Mendocino Modoc Plumas Rogue River–Siskiyou San Bernardino Sequoia Shasta–Trinity Sierra Six Rivers Stanislaus Tahoe
National Wilderness Preservation System	Agua Tibia Ansel Adams Bucks Lake Caribou Carson–Iceberg Castle Crags Cucamonga Desolation Dick Smith Dinkey Lakes Emigrant Golden Trout Hoover Inyo Mountains Ishi Jennie Lakes John Muir Kaiser Marble Mountain Mokelumne Mount Shasta Wilderness North Fork Pine Creek San Gabriel San Jacinto San Rafael Sanhedrin Sespe Siskiyou Snow Mountain South Fork Eel River South Sierra South Warner Thousand Lakes Trinity Alps Ventana Yolla Bolly–Middle Eel Yuki
National Monuments and Recreation Areas	Giant Sequoia National Monument San Gabriel Mountains National Monument Sand to Snow National Monument Santa Rosa and San Jacinto Mountains National Monument Smith River National Recreation Area Whiskeytown–Shasta–Trinity National Recreation Area

State Forests
Boggs Mountain Demonstration Ellen Pickett Jackson Demonstration Las Posadas LaTour Demonstration Mount Zion Demonstration Mountain Home Demonstration Soquel Demonstration

National Wildlife Refuges
Antioch Dunes Bitter Creek Blue Ridge Butte Sink Castle Rock Clear Lake Coachella Valley Colusa Delevan Don Edwards San Francisco Bay Ellicott Slough Farallon Guadalupe-Nipomo Dunes Hopper Mountain Humboldt Bay Kern Lower Klamath Marin Islands Merced Modoc Pixley Sacramento Sacramento River Salinas River San Diego Bay San Diego San Joaquin River San Luis San Pablo Bay Seal Beach Sonny Bono Salton Sea Stone Lakes Sutter Tijuana Slough Tule Lake

National Wildlife Refuges

State Wildlife Areas

Wildlife Areas	Antelope Valley Ash Creek Bass Hill Battle Creek Big Lagoon Big Sandy Biscar Butte Valley Buttermilk Country Cache Creek Camp Cady Cantara/Ney Springs Cedar Roughs Cinder Flats Collins Eddy Colusa Bypass Coon Hollow Cottonwood Creek Crescent City Marsh Crocker Meadows Daugherty Hill Decker Island Doyle Dutch Flat Eastlker River Eel River Elk Creek Wetlands Elk River Fay Slough Feather River Fitzhugh Creek Fremont Weir Grass Lake Gray Lodge Green Creek Grizzly Island Hallelujah Junction Heenan Lake Hill Slough Hollenbeck Canyon Honey Lake Hope Valley Horseshoe Ranch Imperial Indian Valley Kelso Peak and Old Dad Mountains Kinsman Flat Knoxville Laguna Lake Berryessa Lake Earl Lake Sonoma Little Panoche Reservoir Los Banos Lower Sherman Island Mad River Slough Marble Mountains Mendota Merrill's Landing Miner Slough Monache Meadows Morro Bay Moss Landing Mouth of Cottonwood Creek Napa-Sonoma Marshes North Grasslands O'Neill Forebay Oroville Petaluma Marsh Pickel Meadow Pine Creek Point Edith Putah Creek Rector Reservoir Red Lake Rhode Island Sacramento River San Felipe Valley San Jacinto San Luis Obispo San Luis Reservoir San Pablo Bay Santa Rosa Shasta Valley Silver Creek Slinkard/Little Antelope Smithneck Creek South Fork Spenceville Surprise Valley Sutter Bypass Tehama Truckee River Upper Butte Basin Volta Warner Valley Waukell Creek West Hilmar Westlker River White Slough Willow Creek Yolo Bypass
Ecological Reserves	Albany Mudflats Alkali Sink Allensworth Atascadero Creek Marsh Bair Island Baldwin Lake Batiquitos Lagoon Blue Sky Boden Canyon Boggs Lake Bolsa Chica Bonny Doon Buena Vista Lagoon Butler Slough Butte Creek Canyon Butte Creek House Buttonwillow By Day Creek Calhoun Cut Canebrake Carlsbad Highlands Carmel Bay Carrizo Canyon Carrizo Plains China Point Clover Creek Coachella Valley Coal Canyon Corte Madera Marsh Crestridge Dairy Mart Ponds Dales Lake Del Mar Landing Eden Landing Elkhorn Slough Estelle Mountain Fall River Mills Fish Slough Fremont Valley Goleta Slough Indian Joe Spring Kaweah Kerman King Clone Laguna Laurel Loch Lomond Vernal Pool Lokern Magnesia Spring Marin Islands Mattole River McGinty Mountain Morro Dunes Morro Rock Napa River North Table Mountain Oasis Spring Panoche Hills Peytonia Slough Phoenix Vernal Pools Pine Hill Piute Creek Pleasant Valley Rancho Jamul Redwood Shores River Springs Lakes Saline Valley San Dieguito Lagoon San Elijo Lagoon San Felipe Creek San Joaquin River Santa Rosa Plateau Springville Stone Corral Sycamore Canyon Sycuan Peak Thomes Creek Tomales Bay Upper Newport Bay Watsonville Slough West Mojave Desert Woodbridge Yaudanchi
Marine Protected Areas	Abalone Cove and Point Vicente Anacapa Island SMCA Año Nuevo Arrow Point to Lion Head Point Batiquitos Lagoon Big Creek Bodega Head Bolsa Chica Cambria Campus Point Carmel Bay Cat Harbor Crystal Cove Dana Point Duxbury Reef Edward F. Ricketts Elkhorn Slough Estero Americano Estero de Limantour and Drakes Estero Estero de San Antonio Fagan Marsh Famosa Slough Farnsworth Onshore and Offshore Goleta Slough Greyhound Rock Lovers Cove and Casino Point MacKerricher Marin Islands Morro Bay Naples Pacific Grove Marine Gardens Painted Cave Piedras Blancas Point Arena Point Buchon Point Dume Point Reyes Point Sur Portuguese Ledge Pyramid Point Robert E. Badham Robert W. Crown Russian Gulch Russian River Salt Point San Diego-Scripps San Dieguito Lagoon San Elijo Lagoon Saunders Reef Sea Lion Cove Sonoma Coast Soquel Canyon South La Jolla South Point Southeast Farallon Island Stewarts Point Swami's Tijuana River Mouth Upper Newport Bay Van Damme Vandenberg White Rock (Cambria)

Bureau of Land Management National Conservation Lands

National Monuments	Berryessa Snow Mountain California Coastal Carrizo Plain Cascade–Siskiyou Fort Ord Mojave Trails Sand to Snow Santa Rosa and San Jacinto Mountains
National Conservation Areas	California Desert King Range
Wilderness Areas	Argus Range Big Maria Mountains Bigelow Cholla Garden Bighorn Mountain Black Mountain Bright Star Bristol Mountains Cadiz Dunes Carrizo Gorge Chemehuevi Mountains Chimney Peak Chuckwalla Mountains Chumash Cleghorn Lakes Clipper Mountain Coso Range Coyote Mountains Darwin Falls Dead Mountains Dick Smith El Paso Mountains Fish Creek Mountains Funeral Mountains Garcia Golden Valley Grass Valley Headwaters Forest Reserve Hollow Hills Ibex Indian Pass Inyo Mountains Jacumba Kelso Dunes Kiavah Kingston Range Little Chuckwalla Mountains Little Picacho Machesna Mountain Malpais Mesa Manly Peak Matilija Mecca Hills Mesquite Newberry Mountains Nopah Range North Algodones Dunes North Mesquite Mountains Old Woman Mountains Orocopia Mountains Otay Mountain Owens Peak Pahrump Valley Palen/McCoy Palo Verde Mountains Picacho Peak Piper Mountain Piute Mountains Red Buttes Resting Spring Range Rice Valley Riverside Mountains Rodman Mountains Sacatar Trail Saddle Peak Hills San Gorgonio Santa Lucia Santa Rosa Sawtooth Mountains Sespe Sheephole Valley South Nopah Range Stateline Stepladder Mountains Surprise Canyon Sylvania Mountains Trilobite Turtle Mountains Whipple Mountains

National Marine Sanctuaries
Channel Islands Cordell Bank Greater Farallones Monterey Bay

National Estuarine Research Reserves
Elkhorn Slough San Francisco Bay Tijuana River

University of California Natural Reserve System
Angelo Coast Range Año Nuevo Island Blue Oak Ranch Bodega Marine Box Springs Burns Piñon Ridge Carpinteria Salt Marsh Chickering American River Coal Oil Point Dawson Los Monos Canyon Eagle Lake Field Station Elliott Chaparral Emerson Oaks Fort Ord Hans Jenny Pygmy Forest Hastings James San Jacinto Mountains Jepson Prairie Kendall-Frost Mission Bay Marsh Landels-Hill Big Creek Lassen Field Station McLaughlin Merced Vernal Pools and Grassland Motte Rimrock Philip L. Boyd Deep Canyon Desert Point Reyes Field Station Quail Ridge Rancho Marino Sagehen Creek Field Station San Joaquin Marsh Santa Cruz Island Scripps Coastal Sedgwick Stebbins Cold Canyon Steele Burnand Anza-Borrego Desert Stunt Ranch Santa Monica Mountains Sweeney Granite Mountains Desert Valentine Eastern Sierra White Mountain Younger Lagoon

University of California Natural Reserve System

Angelo Coast Range
Año Nuevo Island
Blue Oak Ranch
Bodega Marine
Box Springs
Burns Piñon Ridge
Carpinteria Salt Marsh
Chickering American River
Coal Oil Point
Dawson Los Monos Canyon
Eagle Lake Field Station
Elliott Chaparral
Emerson Oaks
Fort Ord
Hans Jenny Pygmy Forest
Hastings
James San Jacinto Mountains
Jepson Prairie
Kendall-Frost Mission Bay Marsh
Landels-Hill Big Creek
Lassen Field Station
McLaughlin
Merced Vernal Pools and Grassland
Motte Rimrock
Philip L. Boyd Deep Canyon Desert
Point Reyes Field Station
Quail Ridge
Rancho Marino
Sagehen Creek Field Station
San Joaquin Marsh
Santa Cruz Island
Scripps Coastal
Sedgwick
Stebbins Cold Canyon
Steele Burnand Anza-Borrego Desert
Stunt Ranch Santa Monica Mountains
Sweeney Granite Mountains Desert
Valentine Eastern Sierra
White Mountain
Younger Lagoon

Private Conservation Land Trusts
Agua Hedionda Lagoon Arastradero Preserve Arroyo Conejo Open Space Audubon Canyon Ranch Bear Creek Redwoods Open Space Preserve Blue Ridge Berryessa Natural Area Bluff Lake Big Sur Land Trust California Rangeland Trust Catalina Island Conservancy Claremont Canyon Conservancy Cosumnes River Preserve Fairfield Osborn Preserve Land Conservancy of San Luis Obispo County Pacific Forest Trust Palos Verdes Peninsula Land Conservancy Peninsula Open Space Trust Pepperwood Preserve Sanctuary Forest Santa Cruz Island Santa Lucia Preserve Sempervirens Fund Sierra Nevada Alliance Sogorea Te Land Trust The Nature Conservancy Trust for Public Land The Wildlands Conservancy

Private Conservation Land Trusts

Heritage registers: National Natural Landmarks

v t e Map: Islands of the San Francisco Bay Area
Alameda Alcatraz Angel Bair Bay Farm Belvedere Bird I. Brooks The Brothers Castro Rocks Coast Guard Corinthian Greco Gull R. Hog Hooks Kent (off map) Mare Mussel Rock Rat Rock Red R. San Pedro Rock Seal Rocks Seal Rock The Sisters Treasure Marin Yerba Buena Skaggs Strawberry Drawbridge (islands of Suisun Bay and the Sacramento–San Joaquin River delta) Brewer Bull (off map) Burdell Coon Day Deer Edgerly Green #1 #2 Knight Little Neils Russ Tubbs Wood Bird Aramburu Ogilvie Silva Simms Jakes Newby Richardson

Map: Islands of the San Francisco Bay Area

Alameda

Alcatraz

Angel

Bair

Bay Farm

Belvedere

Bird I.

Brooks

The Brothers

Castro Rocks

Coast Guard

Corinthian

Greco

Gull R.

Hog

Hooks

Kent
(off map)

Mare

Mussel Rock

Rat Rock

Red R.

San Pedro Rock

Seal Rocks

Seal Rock

The Sisters

Treasure

Marin

Yerba Buena

Skaggs

Strawberry

Drawbridge

(islands of Suisun Bay and the
Sacramento–San Joaquin River delta)

Brewer

Bull (off map)

Burdell

Coon

Day

Deer

Edgerly

Green

Knight

Little

Neils

Russ

Tubbs

Wood

Bird

Aramburu

Ogilvie

Silva

Simms

Jakes

Newby

Richardson

v t e San Francisco Bay watershed
Outline	Hydrography Ecology List of tributaries List of lakes
Subdivisions	Major San Francisco Bay Suisun Bay San Pablo Bay Minor Golden Gate Grizzly Bay Richardson Bay San Rafael Bay Richmond Inner Harbor San Leandro Bay Former Yerba Buena Cove Mission Bay
Waterways	Rivers San Joaquin Sacramento Napa Guadalupe Petaluma Creeks (discharging into the Bay) Alameda Baxter Cerrito Codornices Coyote (Santa Clara) Coyote (Marin) San Leandro San Lorenzo Schoolhouse Temescal Sausal Redwood San Mateo Sonoma Corte Madera Arroyo Corte Madera del Presidio San Rafael Miller Novato Tolay San Francisquito Pacheco Alhambra Adobe Rodeo Refugio Pinole Garrity Rheem Karlson San Pablo Castro Wildcat Fluvius Innominatus Marin (Alameda County) Strawberry Easton Mission Creek Reservoirs Calaveras Reservoir Lafayette Reservoir Straits and estuaries Clifton Court Forebay Carquinez Strait Oakland Estuary Raccoon Strait Sacramento–San Joaquin River Delta Stockton Deepwater Shipping Channel Watersheds Laguna Creek Watershed Guadalupe watershed
Parks and protected areas	Don Edwards National Wildlife Refuge San Pablo Bay National Wildlife Refuge Eden Landing Ecological Reserve Hayward Regional Shoreline Hayward Shoreline Interpretive Center Crown Memorial State Beach McLaughlin Eastshore State Park Emeryville Crescent State Marine Reserve Point Isabel Regional Shoreline César Chávez Park Brooks Island Regional Preserve Point Pinole Regional Shoreline Antioch Dunes National Wildlife Refuge Coyote Point Recreation Area Middle Harbor Shoreline Park National Estuarine Research Reserve China Camp State Park San Francisco Maritime National Historical Park SF Bay Trail Oyster Bay Regional Shoreline Big Break Regional Shoreline Palo Alto Baylands Nature Preserve
Islands and peninsulas	Major islands Alameda Alcatraz Angel Treasure Island Yerba Buena Minor Brooks Bair Bay Farm Belvedere Brother Castro Rocks Coast Guard Greco Hooks Island Mare Red Rock The Sisters Marin Islands Roe Ryer Seal Islands Peninsulas/infill Albany Bulb Brisbane Baylands Point Isabel Foster City Fleming Point Hunters Point Sierra Point Steamboat Point
Wetlands	Baylands Belmont Chelsea Cordelia Crissy Field Hoffman Meeker Mowry Napa Sonoma Point Molate Salt ponds Seal Stege Steinberger Suisun Westpoint
Bridges and tubes	Bridges San Francisco–Oakland Eastern span replacement Richmond–San Rafael San Mateo–Hayward Dumbarton Dumbarton Rail Bridge (inactive) Golden Gate Benicia–Martinez Antioch Carquinez Leimert Park Street Fruitvale High Street Bay Farm Island Tubes Posey/Webster Street Transbay
Ferries	Angel Island–Tiburon Ferry Blue & Gold Fleet Golden Gate Ferry San Francisco Bay Ferry (WETA)
Ports and marinas	Port of San Francisco Port of Oakland Port of Richmond Hunters Point Naval Shipyard Mare Island Naval Shipyard Port of Redwood City Berkeley Marina Oyster Point Marina/Park Westpoint Harbor Foster City Marina (proposed)
Other	History Delta and Dawn Discovery Site Humphrey the Whale San Leandro Oyster Beds Richmond Shipyards U.S. Army Corps of Engineers Bay Model Harold Gilliam Marincello Ecology Golden Gate Biosphere Reserve Cosco Busan oil spill Thicktail chub Delta smelt Conservation and Development Commission The Watershed Project Save The Bay Citizens for East Shore Parks Friends of Five Creeks Urban Creeks Council 1971 oil spill Greenbelt Alliance The Bay Institute Reber Plan San Francisco Baykeeper San Francisco Estuary and Watershed Science Estuary Partnership Transportation Water Trail Transportation in the San Francisco Bay Area
Portal Category

San Francisco Bay Area

Bodies of
water

Counties

Cities
and
towns

Major cities	Oakland San Francisco San Jose
100k–250k	Antioch Berkeley Concord Daly City Fairfield Fremont Hayward Richmond San Mateo Santa Clara Santa Rosa Sunnyvale Vacaville Vallejo
50k–100k	Alameda Brentwood Cupertino Dublin Gilroy Livermore Milpitas Mountain View Napa Novato Palo Alto Petaluma Pittsburg Pleasanton Redwood City San Leandro San Rafael San Ramon South San Francisco Union City Walnut Creek
25k–50k	Belmont Benicia Burlingame Campbell Danville East Palo Alto El Cerrito Foster City Hercules Lafayette Los Altos Los Gatos Martinez Menlo Park Morgan Hill Newark Oakley Pacifica Pleasant Hill Rohnert Park San Bruno San Carlos San Pablo Saratoga Suisun City Windsor
10k–25k	Albany American Canyon Clayton Corte Madera Dixon Emeryville Half Moon Bay Healdsburg Hillsborough Larkspur Mill Valley Millbrae Moraga Orinda Piedmont Pinole Rio Vista San Anselmo Sonoma
Under 10k	Atherton Belvedere Brisbane Calistoga Cloverdale Colma Cotati Fairfax Los Altos Hills Monte Sereno Portola Valley Ross St. Helena Sausalito Sebastopol Tiburon Woodside Yountville