COASTWEEKS is an annual celebration of our coastal and water resources, kicked off by California Coastal Cleanup Day on September 17th when tens of thousands of Californians will come together to keep our coasts and inland waterways free of debris.

Below you will find a calendar of events collected from throughout California to help you celebrate COASTWEEKS. The majority of these events are free. Please contact the host organizations for more information and to confirm the details. To add your event to the calendar, please send details by email. This calendar is growing, so check back often!

Have fun, and enjoy our Coast and Waterways!

The list below is organized by county, with events listed by date within each county. Switch to a list organized statewide by date.

Inclusion in this calendar does not necessarily indicate Coastal Commission support of the policies or programs of the organizations, which are independently responsible for their events.

View events taking place in the following counties:

Statewide     Alameda
Alpine
Amador
Butte
Calaveras
Colusa
Contra Costa    
Del Norte
El Dorado
Fresno
Glenn
Humboldt
Imperial
Inyo
Kern
Kings
Lake
Lassen
Los Angeles
Madera
Marin
Mariposa
Mendocino
Modoc
Mono
Monterey
Napa
Nevada
Orange
Placer
Plumas
Riverside
Sacramento
San Benito
San Bernardino    
San Diego
San Francisco
San Joaquin
San Luis Obispo
San Mateo
Santa Barbara    
Santa Clara
Santa Cruz
Shasta
Sierra
Siskiyou
Solano
Sonoma
Stanislaus
Trinity
Tulare
Tuolumne
Ventura
Yolo
Yuba


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Coastal Cleanup Day volunteers smiling for photo

Statewide

Saturday, September 17
California Coastal Cleanup Day!

Coastal Cleanup Day will take place at over 800 sites all over California! You're sure to find a location near you. Join your friends and neighbors for the largest volunteer event in California


Wednesday, September 21

Photo of rafter on Mokolumne River, by Amador Council of Tourism
Photo: Amador Council of Tourism

Amador County

Saturday, September 17

Sunday, September 25

Photo of Lake Oroville
Photo: California State Parks

Butte County

Saturday, September 17

Saturday, October 8

Photo of father and daughter paddling New Hogan Lake
Photo: US Army Corps of Engineers

Calaveras County

Saturday, September 17

Saturday, September 24

Photo of a black-crowned Night-Herons, by Mike Peters, Colusa National Wildlife Refuge
Photo: Mike Peters, Colusa National Wildlife Refuge

Colusa County

Saturday, September 17

Photo of a north coast beach at sunset, by Charlotte Gibb
Photo: Charlotte Gibb

Del Norte County

Saturday, September 17

Saturday, October 1

Photo of Emerald Bay
Photo: California State Parks

El Dorado County

Saturday, September 17

Sunday, September 18

Photo of volunteers removing tires from the river by boat
Cleanup day at the river

Fresno County

Saturday, September 17

Saturday, September 24

Saturday, October 1

Photo: Mike Peters, Sacramento National Wildlife Refuge

Glenn County

Saturday, September 24

Photo of white pelican catching a fish at Salton Sea SRA
Photo: California State Parks

Imperial County

Saturday, September 17

Photo of birders at Owens Lake, by Friends of the Inyo
Photo: Friends of the Inyo

Inyo County

Saturday, September 17

Photo of Kern River, courtesy Kern River Conservancy
Photo: Kern River Conservancy

Kern County

Saturday, September 17

Saturday, September 24

Sunday, September 25

Kids in canoe
Photo: Environmental Health Institute

Kings County

Saturday, September 17

Photo of bikers on road next to lake, by Lake County Marketing & Economic Development
Photo: Lake County Marketing & Economic Development

Lake County

Saturday, September 17

Photo of Silver Lake, by NPS
Photo: NPS

Lassen County

Saturday, September 17

Photo of family fishing at Hensley Lake, by US Army Corps of Engineers
Photo: US Army Corps of Engineers

Madera County

Saturday, September 17

Saturday, September 24

Photo of Lake McClure, by Merced Irrigation District
Photo: Merced Irrigation District

Mariposa County

Saturday, September 17

Photo of Schooner Gulch State Beach, by Terry Solomon
Photo: Terry Solomon

Mendocino County

Saturday, September 17

Sunday, September 19

Saturday, September 24

Sunday, September 25

Sunday, October 2

Photo of taggedpelican at Clear Lake National Wildlife Refuge
Photo: Clear Lake National Wildlife Refuge

Modoc County

Saturday, September 17

Photo of Mono Lake reflecting the sky

Mono County

Saturday, September 17

Photo of Lake Berryessa at sunset, by Bureau of Reclamation
Photo: Bureau of Reclamation

Napa County

Saturday, September 17

Photo of Spaulding Lake, by Nic Enstice - Sierra Nevada Conservancy
Photo: Nic Enstice - Sierra Nevada Conservancy

Nevada County

Saturday, September 17

Saturday, September 24

Photo Elegant Tern Courtship, Bolsa Chica Wetlands, by Hal Beral
Photo: Hal Beral

Orange County

Saturday, September 17

Sunday, September 18

Wednesday, September 21

Thursday, September 22

Saturday, September 24

Sunday, September 25

Wednesday, September 28

Thursday, September 29

Saturday, October 1

Sunday, October 2

Wednesday, October 5

Thursday, October 6

Saturday, October 8

Sunday, October 9

Photo of river by Placer County Visitors Bureau
Photo: Placer County Visitors Bureau

Placer County

Saturday, September 17

Photo of man fishing in river, by Plumas County Tourism Council
Photo: Plumas County Tourism Council

Plumas County

Saturday, September 17

Photo: Riverside County

Riverside County

Saturday, September 17

Saturday, October 8

Photo of American River, by Rob Thompson, American River Parkway Foundation
Photo: Rob Thompson, American River Parkway Foundation

Sacramento County

Saturday, September 17

Wednesday, September 21

Photo of Hernandez Valley Reservoir, by Bureau of Land Management
Photo: Bureau of Land Management

San Benito County

Saturday, September 17

Photo of man fishing in Big Bear Lake, by San Bernardino National Forest
Photo: San Bernardino National Forest

San Bernardino County

Saturday, September 17

Saturday, October 8

Photo of woman looking across beach at Golden Gate Bridge, by Kirke Wrench
Photo: Kirke Wrench

San Francisco County

Saturday, September 17

Sunday, September 18

Tuesday, September 20

Wednesday, September 21

Thursday, September 22

Saturday, September 24

Sunday, September 25

Tuesday, September 27

Wednesday, September 28

Thursday, September 29

Saturday, October 1

Sunday, October 2

Wednesday, October 5

Thursday, October 6

Saturday, October 8

Sunday, October 9

Photo of kayakers in Lodi Lake, by City of Lodi
Photo: City of Lodi

San Joaquin County

Saturday, September 17

Saturday, September 24

Photo of sand dunes at Morro Bay, by Jerry Cowart
Photo: Jerry Cowart
Photo of American Avocet chicks newly hatched, by Bryan White, Don Edwards San Francisco Bay NWR
Photo: Bryan White, Don Edwards San Francisco Bay NWR
Photo of Sacramento River

Shasta County

Saturday, September 17

Saturday, September 24

Thursday, September 29

Photo of Sand Pond and the Sierra Buttes, by Sierra County
Photo: Sierra County

Sierra County

Saturday, September 17

Photo of Tule Lake Refuge looking at Mt Shasta, by Tule Lake National Wildlife Refuge
Photo: Tule Lake National Wildlife Refuge

Siskiyou County

Saturday, September 17

Photo of Mare Island Strait at Sunset, by Kesma Rauf
Photo: Kesma Rauf

Solano County

Saturday, September 17

Saturday, September 24

Photo of a birdwatching group, by San Joaquin River National Wildlife Refuge
Photo: San Joaquin River National Wildlife Refuge

Stanislaus County

Saturday, September 17

Photo of a man with fish, by Trinity County Chamber of Commerce
Photo: Trinity County Chamber of Commerce

Trinity County

Friday, September 23

Saturday, October 8

Photo of Success Lake in Tulare County
Photo: Michael J. Nevins, US Army Corps of Engineers
Photo of Yellowhammer Creek in the Emigrant Wilderness, by USFS Region 5, Lisa DeHart
Photo: USFS Region 5, Lisa DeHart

Tuolumne County

Saturday, September 17

Saturday, September 24

Photo of railroad crossing sign next to Cobblestones Beach in Ventura, by Matt Wyatt
Photo: Matt Wyatt
Photo of volunteers at a creek cleanup
Photo: California Department of Fish & Wildlife

Yolo County

Saturday, September 17

Photo of scouts at a cleanup

Yuba County

Saturday, September 17

Saturday, October 8