Mother Lode Chapter

Welcome to the Mother Lode Chapter of the Sierra Club! 

We encompass eleven local Sierra Club groups in twenty-four counties in Northern & Central California

MLC Region and Groups

Chapter Elections 2024

Congratulations to our Volunteer Leaders! Thank you to everyone who participated in our election. We love and appreciate all our passion and work for our communities.

Election Results.


Webinar Series

Do you want to get involved and don’t know where to start? Well, our chapter has a local group near you and needs your help. To get you started, we have a different monthly training to get you up to speed and ready to work on issues in your community. These trainings will be recorded and available here after

We will upload our webinar series here soon...


We are hired a new Project Director Environmental Justice - Toxic Tobacco Waste. Welcome Will Mervau.


Mother Lode Chapter Sierra Club – COVID19 Message

Volunteer for the Chapter

If you are interested, please email us at

 Livable Planet

Together, We Are Powerful

This country belongs to all of us. Together, we can help deepen the movement for a liveable planet, safe communities, and a democracy that works for everyone.

Sign Up: Take the 30 Day Challenge


Chico, CA has a sprawl-inducing project that does not include the desperately needed Affordable housing.

CLICK TO DONATE for the Mother Lode's Blue Oak Group Sierra Club's harmful sprawl litigation in Chico - CA, against Valley Edge Development that does not include the bare minimum affordable housing.

Save Lake Tahoe from Aquatic Weeds!

Tahoe Keys housing development

The development of the Tahoe Keys is a case study in how NOT to develop land in a fragile ecosystem on a world-renowned scenic lake. 

We need to approach the invasive weeds with respect to this important body of water and using proven scientific methods that will remove the problem without creating another one. 

SIGN PETITIONTake Action Now to Save Lake Tahoe from Aquatic Invasive Weeds.

SIERRA CLUB Support for Movement for Black Lives SixNineteen Action

*Note - We have been asked to partner on this movement moment by the Movement For Black Lives, so while this is creating urgency, we want to show up in this important moment.

How we got here: White supremacy is a matter of life and death specifically for Black people and the planet.

The white supremacist, tragic murders of Rayshard Brooks, George Floyd, Ahmaud Arbery, Breonna Taylor, Tony McDade, and countless others have renewed global demands for justice, and we can’t stand by while our governments continue to fund an excessive, brutal, and discriminatory system of policing with our tax dollars.

As one of the largest climate and environmental justice advocacy organizations, part of the Sierra Club’s mandate is to ensure that oppressed communities receive justice and experience the benefits of a healthy and sustainable future. We can never forget that the roots of the climate crisis lie in racism, land-theft, pillaging, colonialism, and patriarchy. And the pain of these injustices is still felt today - Black people have been disproportionately devastated by COVID-19 and live with disproportionately higher levels of toxic pollution, and face more powerful storms, floods, heat waves, wildfires, and droughts. This powerful piece by Hop Hopkins, our Director of Strategic Partnerships, in Sierra Magazine details the inextricable connection between the climate crisis and white supremacy. 

What does it mean to Defund the Police?

by Heather Smith, Sierra Magazine 

Press Release

 100% Clean Energy School Districts Factsheet

Presser Handout

The transportation sector is the largest and fastest-growing source of carbon emissions in the US. In total, the US transportation sector—which includes cars, buses, trucks, planes, trains, ships, and freight—produces nearly 30 percent of all US climate emissions(link is external)—more than any other sector. But this doesn’t have to be the case. The Sierra Club’s Clean Transportation for All campaign is working to ensure that we all benefit from a 21st-century clean transportation system with access to cars, trucks, and buses that rely on little to no oil at all as well as to clean public transit—and other local clean transportation solutions—that centers equity and justice.


PG&E's Powerline Tree Clearing

For more information of the issue please read Central Sierra Environmental Research Center (CSERC) Article:Click Here


 Download the CAL FIRE Ready for Wildfire app. This app contains a fire location map, alerts you when a wildfire is reported within a specified radius of your location, and provides updates about current wildfires, such as size and containment. Follow Cal Fire on Twitter as well.

  1. To prepare for an evacuation, take these precautionary steps.
  2. Be safe- if you feel like you are in danger, leave.
  3. Listen to mandatory evacuation warnings- if you are under one, evacuate as quickly as possible
  4. Be aware of road conditions and closures- check here.
  5. Remember- calls are overwhelming our 911 centers- please call 911 only if you see fire near your house.

Stay Safe 

Annual Awards Banquet - May 18




 SUMMER BONANZA - Award Winners Special Edition

Donations Needed: Gear in good condition

Mother Lode Chapter's Inspiring Connections Outdoors section is starting a backpacking program this summer with the goal of getting more youth and young adults out into nature, away from cars, crowds, and other distractions.

To get this program underway, ICO needs gear in good condition that is designed for backpacking, including: packs, sleeping bags, mats, tents, and stoves.  If you have items that you would like to donate, please contact ICO’s chair:  Harry at info[@] Thank you! 


More Info coming soon

Stand Up for Our National Monuments! 

Sierra Club, conservation allies and our tribal partners are rallying in Salt Lake City and across the nation to defend national monuments threatened by the Trump Administration.  On Monday, December 4 in Salt Lake City the President announced his decision to drastically shrink Grand Staircase-Escalante by 45% and Bears Ears National Monuments in Utah by 80%. 

Here's a map with these and other events across the country. Remember to check the page as the week goes by; other events are being organized.  Please stand up for our National Monuments...and share widely!   Defend #MonumentsForAll   #StandWithBearsEars   #SaveGrandStaircase

Healing in Nature

DREAMers from the Mother Lode Chapter region went to Berryessa Snow Mountain National Monument. READ STORY


DREAMers Go Wild #MonumentsforAll


We came together to live and understand the connectivity of all things in a powerful way. In nature, in our Public Lands, a group of DREAMers gathered to defend our right to the outdoors and take a stand against Sec. Zinke’s recommendation to Trump. This while also enjoying the outdoors and learning to heal from the ongoing trauma our broken immigration system creates for them and in our families and communities. 

This federal administration is working to strip essential protections that would eliminate important parts of our national monuments and terrorize immigrant communities with fear of deportation. We all come from the land, and we are here to stay.

We will not leave our communities and our public lands unprotected. The admirable determination our DREAMers have to study and live happy, productive lives and the “objects of scientific and historical interest” our National Monuments have are still there and still deserve to be fully protected for All people living on this land and for future generations.

#MonumentsforAll #DREAMersGoWild #SaveOurOutdoors #RighttoDream #KeepItPublic 

To learn more about the Clean Dream Act - Click Here.  

PCM Banner

 Please consider donating to the chapter to support our local environmental heroes.

Mother Lode Chapter  

Our Youngest members' always teaching us why we fight for what we love. Donate Here

8 Year Old Vinny sending MLC $ to save the birds

Find out about your local group

Chapter Committees:

Executive Committee
It governs the chapter. Meets quarterly and via email. Three terms are open each fall.  More information
Conservation Committee
Meets quarterly and via email. See the calendar below 
Committee for Sustainable World Population
Inspiring Connections Outdoors for youth
Sierra Club Seniors
Offers hikes and other outings geared toward seniors. Visit their website
Gay & Lesbian Sierrans
Climate Change Committee
Renewable Energy Future

Forestry Committee

Other committees:
Public Lands & PG&E Committee
Genetic Engineering Committee    
For more information about any of the above committees, email Chapter Director Dyane Osorio 

Contact the Webmaster


Mother Lode Chapter Calendar of Events
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