Opportunities

We are seeking volunteers to come assist with this fun nature journaling program for the public. We will need volunteers to assist with signing folks in, getting materials ready and with pointing out interesting natural phenomenon for writing about a...

We are seeking 4 volunteers to come help us welcome and engage the public at Laguna Seca Discovery Day. This is an Open Access format event where members of the public can come hike on the Laguna Seca property and learn all about CVCAMP planning effo...

TM Volunteer support request for this day of weed eating in the Aokie Property in north county. What's an Aokie? Good question. Show up and find out! 9AM meetup at the address provided below. *Special note on meeting point for this event. The addres...

The Open Space Authority is excited to support and participate in the 3rd Annual San Jose Cinco de Mayo Festival. Help us engage with members of our community at this fantastic annual event! OSA staff will provide a booth with Spanish language materi...

We are seeking five volunteer ambassadors to help represent us by walking in the 3rd Annual Cinco de Mayo Parade in San Jose on Sunday May 3, 2026. The parade begins at 10am on Alum Rock and King Road. It travels from the Mexican Heritage Plaza down...

TM Volunteer support request for weed eating work in Rancho Cañada del Oro Open Space Preserve.Lead OST 2 Greg Rosselli and the field team set aside the entire Bald Peaks Trail as a Trail Master led effort. We hope to complete the needed maintenance...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

TM Volunteer support request for weed eating work in Rancho Cañada del Oro Open Space Preserve.Lead OST 2 Greg Rosselli and the field team set aside the entire Bald Peaks Trail as a Trail Master led effort. We hope to complete the needed maintenance...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

Join us for upcoming opportunities to enhance your knowledge as a docent or volunteer with the Open Space Authority. These sessions are designed to provide knowledge and practical experience to help enhance our programs for the public. Come learn wi...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...

TM Volunteer support request for the Furtado Barn restoration site Sierra Vista OSP. We will be using weed whips around the Furtado Barn to address seasonal maintenance. If time and group size allow we might do some selective removal of Coyote Brus...

Join VET's staff from 9:00 a.m. to 1:00 p.m. on May 9, 2026 to learn all about how to use interpretive techniques for engaging our preserve audiences! We will go over our mission and resources, engagement techniques for all roles and for all attende...

We are seeking four amazing volunteers to represent the Authority at the Scout-O-Rama Family Adventure Festival, which occurs on May 9 from 10 a.m. to 4 p.m. We will need two volunteers from 8:30 am-12:30 pm. Second shift of two volunteers from 12:...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...

Fresh Air and Flowers Hikes at Máyyan 'Ooyákma! To help protect this sensitive and unique ecosystem, in March, April, and May the trails will be open by reservation ONLY on Saturdays and Sundays. During this time, the public must sign up here for...

Fresh Air and Flowers at Máyyan ‘Ooyákma - Coyote Ridge Open Space Preserve- Hike Sweeps Needed!Please note shifts are listed below. To help protect this sensitive and unique ecosystem, in March, April, and May the trails will be open by reserv...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...

Our Natural Resources staff is now seeking volunteer help for irrigation work and TLC for the native planting sites installed last fall. This help will unfold over 3 return trips to the recently restored Rancho ponds. This is the first of 3 weekda...

TM Volunteer support request for this day of weed eating in Sierra Vista OSP. Please arrive no later than 9:00 a.m. and park in the staging area. TM Volunteers will depart from there with staff for the day. Location of trail work will be needs depend...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...

Return to Kuzia! TM Volunteer support request for this day of invasive species maintenance. Our first work days at this location were productive and we hope to continue our success. Our attention this day will be on addressing invasive mustard plant...

Mike H. is leading this awesome full loop hike on Coyote Ridge to share his knowledge all about tule elk! We are seeking at least two hike sweeps to help manage the group, share knowledge and escort guests back if they need to leave early for any rea...

Join us for upcoming opportunities to enhance your knowledge as a docent or volunteer with the Open Space Authority. These sessions are designed to provide knowledge and practical experience to help enhance our programs for the public. Come learn wi...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...

Fresh Air and Flowers Hikes at Máyyan 'Ooyákma! To help protect this sensitive and unique ecosystem, in March, April, and May the trails will be open by reservation ONLY on Saturdays and Sundays. During this time, the public must sign up here for...

Fresh Air and Flowers at Máyyan ‘Ooyákma - Coyote Ridge Open Space Preserve- Hike Sweeps Needed!Please note shifts are listed below. To help protect this sensitive and unique ecosystem, in March, April, and May the trails will be open by reserv...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...

TM Volunteer support request for Integrated Pest Management (IPM) at Máyyan 'Ooyákma Coyote Ridge Open Space Preserve. We have been working to manage and reduce the yellow star thistle plant population at this preserve.This event will access MOCR ...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

Our Natural Resources staff is now seeking volunteer help for irrigation work and TLC for the native planting sites installed last fall. This help will unfold over 3 return trips to the recently restored Rancho ponds. This is the first of 3 weekda...

TM Volunteer support request for Integrated Pest Management (IPM) at Máyyan 'Ooyákma Coyote Ridge Open Space Preserve. We have been working to manage and reduce the yellow star thistle plant population at this preserve. This event will access MOCR...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

We are seeking volunteers to come assist with this fun nature journaling program for the public. We will need volunteers to assist with signing folks in, getting materials ready and with pointing out interesting natural phenomenon for writing about a...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

TM Volunteer support request for grounds cleanup at the Pajaro River Agricultural Preserve (PRAP). We will address areas around the structures on site as well as the vegetation around the grounds. We will use weed whips and pole saws. TM Volunteer...

Our docent, Karen, will be leading a "Beginning Birding Walk at Rancho Cañada del Oro" with one other docent. Sweeps will join the hike to help keep the group together, and possibly walk community members back if they are unable to complete the walk...

Our docent, Karen, will be leading a "Beginning Birding Walk at Rancho Cañada del Oro" and is seeking another docent who can support her. Ideally, this docent will have knowledge about identifying birds. Shift time: 8:00 AM - 11:30 AMProgram run t...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...

Fresh Air and Flowers Hikes at Máyyan 'Ooyákma! To help protect this sensitive and unique ecosystem, in March, April, and May the trails will be open by reservation ONLY on Saturdays and Sundays. During this time, the public must sign up here for...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...

Fresh Air and Flowers Hikes at Máyyan 'Ooyákma! To help protect this sensitive and unique ecosystem, in March, April, and May the trails will be open by reservation ONLY on Saturdays and Sundays. During this time, the public must sign up here for...

Fresh Air and Flowers at Máyyan ‘Ooyákma - Coyote Ridge Open Space Preserve- Hike Sweeps Needed!Please note shifts are listed below. To help protect this sensitive and unique ecosystem, in March, April, and May the trails will be open by reserv...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...

Our Natural Resources staff is now seeking volunteer help for irrigation work and TLC for the native planting sites installed last fall. This help will unfold over 3 return trips to the recently restored Rancho ponds. This is the first of 3 weekda...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...

Another TM Volunteer support request for weed eating at Blair Barn. Our first day was so great we want to do it again! Please arrive no later than 9:00 a.m. and park at the Barn. The turn off of Uvas Rd onto the gravel drive will be marked with one ...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

Join Kat to help lead a search for soap plant at Coyote Valley OSP! Sweeps will help keep the group together, point out soap plant, share information about the Authority and escort guests back if they need to leave early. Here is what has been shared...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

We are seeking three volunteer Preserve Stewards each Wednesday, Thursday, and Friday in spring to support operations at MOCR. In addition we will be seeking patrols on the holiday Monday, May 25. These volunteers will perform patrols in the Habitat...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...

Fresh Air and Flowers Hikes at Máyyan 'Ooyákma! To help protect this sensitive and unique ecosystem, in March, April, and May the trails will be open by reservation ONLY on Saturdays and Sundays. During this time, the public must sign up here for...

Fresh Air and Flowers at Máyyan ‘Ooyákma - Coyote Ridge Open Space Preserve- Hike Sweeps Needed!Please note shifts are listed below. To help protect this sensitive and unique ecosystem, in March, April, and May the trails will be open by reserv...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...

We are seeking two volunteer Preserve Stewards each Wednesday, Thursday, Friday, Saturday and Sunday in spring to support operations at MOCR. In addition, we will need preserve stewards to welcome the public on the holiday Monday, May 25. These vol...