60 events found. Events Events Search and Views Navigation Search Enter Keyword. Search for Events by Keyword. Find Events Event Views Navigation Photo List Day Photo Map Summary Today 5/12/2025 May 12, 2025 - 5/17/2026 May 17 Select date. List of events in Photo View South Rim Adventure: Badger Survey May 12 South Rim Adventure: Badger Survey 9:00 am - 2:00 pm Free Watershed & Wilderness: Exploring the San Diego River at Mission Trails May 12 Watershed & Wilderness: Exploring the San Diego River at Mission Trails 12:30 pm - 2:00 pm Free San Diego River Mouth Habitat Restoration May 13 San Diego River Mouth Habitat Restoration 9:00 am - 12:00 pm Free For the Birds – Essential to Endangered May 13 For the Birds – Essential to Endangered 9:00 am - 1:00 pm Free Seed Bomb Sculptures with ArtReach May 13 Seed Bomb Sculptures with ArtReach 4:00 pm - 6:00 pm Free SDMBA Guided Mountain Bike Ride May 13 SDMBA Guided Mountain Bike Ride 5:30 pm - 7:00 pm River Days Crestridge Flower Hike May 14 River Days Crestridge Flower Hike 9:00 am - 11:00 am Free River Rescue Trash Cleanup May 14 River Rescue Trash Cleanup 9:00 am - 12:00 pm Free Serra Mesa-Kearny Mesa Library San Diego River Days Storytime May 14 Serra Mesa-Kearny Mesa Library San Diego River Days Storytime 4:00 pm - 5:00 pm Free Grant Park Community Stewards May 15 Grant Park Community Stewards 8:00 am - 10:00 pm Free Watershed & Wilderness: Exploring the San Diego River at Mission Trails May 15 Watershed & Wilderness: Exploring the San Diego River at Mission Trails 12:30 pm - 2:00 pm Free Preschool Storytime at Mast park, hosted by the Santee Library May 16 Preschool Storytime at Mast park, hosted by the Santee Library 10:30 am - 11:30 am Free Craft Bazaar and Butterfly Garden at the Historic Santee Barn May 16 Craft Bazaar and Butterfly Garden at the Historic Santee Barn 10:30 am - 12:00 pm Free ILACSD Lakeside Litter Clean-Up May 16 ILACSD Lakeside Litter Clean-Up 3:00 pm - 5:00 pm Free Stewardship Saturday in Olivia Canyon May 17 Stewardship Saturday in Olivia Canyon 8:00 am - 10:30 am Kids Adventure Hike at Louis A. Stelzer County Park May 17 Kids Adventure Hike at Louis A. Stelzer County Park 8:00 am - 12:00 pm Free Bird Walk at Famosa Slough May 17 Bird Walk at Famosa Slough 9:00 am - 11:00 am Community River Cleanup at Mission Valley Preserve May 17 Community River Cleanup at Mission Valley Preserve 9:00 am - 12:00 pm Free Santa Ysabel Open Space Preserve Wildflower Hike May 17 Santa Ysabel Open Space Preserve Wildflower Hike 9:00 am - 2:00 pm Free Grant Park Open House May 17 Grant Park Open House 10:00 am - 12:00 pm Free Santee Historical Society Spring Fling May 17 Santee Historical Society Spring Fling 10:30 am - 12:00 pm Free Pollinator Safari May 17 Pollinator Safari 12:00 pm - 3:00 pm Free Bat Walk & Moths Under the Moonlight May 17 Bat Walk & Moths Under the Moonlight 7:00 pm - 9:00 pm Free Bird Survey May 18 Bird Survey 8:00 am - 9:30 am Free The Ebb and Flow of the River Pop-up Art Show May 18 The Ebb and Flow of the River Pop-up Art Show 11:00 am - 3:00 pm Free Drop-in Collage Workshop May 18 Drop-in Collage Workshop 11:00 am - 3:00 pm Free BikeSD River Days Ride May 18 BikeSD River Days Ride 1:00 pm - 2:15 pm Free River Days 5K Walk for Wildlife and Fun Run! May 9 River Days 5K Walk for Wildlife and Fun Run! 7:30 am - 10:00 am River Days Watershed and Wild Flower Hike May 9 River Days Watershed and Wild Flower Hike 9:00 am - 11:00 am Eagle Peak Ranch Preserve Hike (Canyon Bridge) May 9 Eagle Peak Ranch Preserve Hike (Canyon Bridge) 9:00 am - 12:00 pm Wildlife Tracking Exhibit May 9 Wildlife Tracking Exhibit 9:00 am - 12:00 pm Free Famosa Slough Work Party May 9 Famosa Slough Work Party 9:00 am - 12:00 pm El Monte Valley Cleanup May 9 El Monte Valley Cleanup 9:00 am - 12:00 pm Free Bikes & Birds May 9 Bikes & Birds 10:00 am - 12:00 pm Free River Days at Barona Cultural Center May 9 River Days at Barona Cultural Center May 9 @ 10:00 am - May 16 @ 4:00 pm Free Art Reception at Santa Ysabel Art Gallery “Art of the River” by San Diego River Artists Alliance May 9 Art Reception at Santa Ysabel Art Gallery “Art of the River” by San Diego River Artists Alliance 4:00 pm - 7:00 pm Free Santa Ysabel Open Space Preserve East Wildflower Hike May 10 Santa Ysabel Open Space Preserve East Wildflower Hike 8:00 am - 1:00 pm Free Free Fly Casting Lessons May 10 Free Fly Casting Lessons 9:00 am - 11:00 am San Diego River Mouth Interpretive Walk w/ San Diego Bird Alliance May 10 San Diego River Mouth Interpretive Walk w/ San Diego Bird Alliance 2:00 pm - 3:00 pm Free San Diego River Mouth Habitat Restoration May 12 San Diego River Mouth Habitat Restoration 8:00 am - 11:00 am Free River Readers Nature Storytime May 12 River Readers Nature Storytime 9:30 am - 10:30 am Free SDMBA Mission Trails Regional Park Intermediate Ride May 12 SDMBA Mission Trails Regional Park Intermediate Ride 5:30 pm - 7:00 pm San Diego River Days Storytime May 13 San Diego River Days Storytime 4:00 pm - 5:00 pm Free River Days Grant Park Community Stewards May 14 River Days Grant Park Community Stewards 8:00 am - 10:00 am Free Explore Nighttime and the Night Sky Along the San Diego River at Grant Park May 14 Explore Nighttime and the Night Sky Along the San Diego River at Grant Park 7:30 pm - 9:30 pm Free ILACSD & Lakeside’s River Park Conservancy: San Diego River Days Cleanup- Cactus Park May 15 ILACSD & Lakeside’s River Park Conservancy: San Diego River Days Cleanup- Cactus Park 3:00 pm - 5:00 pm Sunset Gardening at the San Diego River Mouth May 15 Sunset Gardening at the San Diego River Mouth 5:00 pm - 7:00 pm Free Sycamore Canyon/Goodan Ranch Ranger-led Interpretive Hike May 16 Sycamore Canyon/Goodan Ranch Ranger-led Interpretive Hike 8:00 am - 11:00 am Free San Diego River Days 2026 Plein Air Paint Out May 16 San Diego River Days 2026 Plein Air Paint Out 8:30 am - 12:30 pm River Days Mission Valley Garden Club May 16 River Days Mission Valley Garden Club 9:00 am - 11:00 am Free River Days SANDAG Group Bike Ride May 16 River Days SANDAG Group Bike Ride 9:00 am - 11:00 am River Days Community Clean-Up May 16 River Days Community Clean-Up 9:00 am - 12:00 pm Free River Days – Hike With a Purpose: BioBlitz at Mildred Falls May 16 River Days – Hike With a Purpose: BioBlitz at Mildred Falls 9:00 am - 12:00 pm Free Imperial Beach Cleanup – River Days with Surfrider San Diego & San Diego Coastkeeper May 16 Imperial Beach Cleanup – River Days with Surfrider San Diego & San Diego Coastkeeper 10:00 am - 12:00 pm Kayak Clean-Up: River Days Clean-Up in Mission Valley May 16 Kayak Clean-Up: River Days Clean-Up in Mission Valley 10:00 am - 12:00 pm Santee Historical Society Craft Bazaar and Butterfly Garden at the Historic Santee Barn May 16 Santee Historical Society Craft Bazaar and Butterfly Garden at the Historic Santee Barn 10:00 am - 2:00 pm Free Petals & Paint: Grant Park Flower Fence Mural Gathering May 16 Petals & Paint: Grant Park Flower Fence Mural Gathering 11:30 am - 1:30 pm Free River Days and Nature Nights: Build a Big Brown Bat Buddy May 16 River Days and Nature Nights: Build a Big Brown Bat Buddy 3:00 pm - 5:30 pm Art Reception for San Diego River Artists Alliance May 16 Art Reception for San Diego River Artists Alliance 5:00 pm - 7:00 pm Free River Days and Nature Nights: Bat and Moth Event May 16 River Days and Nature Nights: Bat and Moth Event 7:00 pm - 9:00 pm Previous Events Today Next Events Subscribe to calendar Google Calendar iCalendar Outlook 365 Outlook Live Export .ics file Export Outlook .ics file
Watershed & Wilderness: Exploring the San Diego River at Mission Trails May 12 Watershed & Wilderness: Exploring the San Diego River at Mission Trails 12:30 pm - 2:00 pm Free
San Diego River Mouth Habitat Restoration May 13 San Diego River Mouth Habitat Restoration 9:00 am - 12:00 pm Free
For the Birds – Essential to Endangered May 13 For the Birds – Essential to Endangered 9:00 am - 1:00 pm Free
Serra Mesa-Kearny Mesa Library San Diego River Days Storytime May 14 Serra Mesa-Kearny Mesa Library San Diego River Days Storytime 4:00 pm - 5:00 pm Free
Watershed & Wilderness: Exploring the San Diego River at Mission Trails May 15 Watershed & Wilderness: Exploring the San Diego River at Mission Trails 12:30 pm - 2:00 pm Free
Preschool Storytime at Mast park, hosted by the Santee Library May 16 Preschool Storytime at Mast park, hosted by the Santee Library 10:30 am - 11:30 am Free
Craft Bazaar and Butterfly Garden at the Historic Santee Barn May 16 Craft Bazaar and Butterfly Garden at the Historic Santee Barn 10:30 am - 12:00 pm Free
Stewardship Saturday in Olivia Canyon May 17 Stewardship Saturday in Olivia Canyon 8:00 am - 10:30 am
Kids Adventure Hike at Louis A. Stelzer County Park May 17 Kids Adventure Hike at Louis A. Stelzer County Park 8:00 am - 12:00 pm Free
Community River Cleanup at Mission Valley Preserve May 17 Community River Cleanup at Mission Valley Preserve 9:00 am - 12:00 pm Free
Santa Ysabel Open Space Preserve Wildflower Hike May 17 Santa Ysabel Open Space Preserve Wildflower Hike 9:00 am - 2:00 pm Free
Santee Historical Society Spring Fling May 17 Santee Historical Society Spring Fling 10:30 am - 12:00 pm Free
Bat Walk & Moths Under the Moonlight May 17 Bat Walk & Moths Under the Moonlight 7:00 pm - 9:00 pm Free
The Ebb and Flow of the River Pop-up Art Show May 18 The Ebb and Flow of the River Pop-up Art Show 11:00 am - 3:00 pm Free
River Days 5K Walk for Wildlife and Fun Run! May 9 River Days 5K Walk for Wildlife and Fun Run! 7:30 am - 10:00 am
River Days Watershed and Wild Flower Hike May 9 River Days Watershed and Wild Flower Hike 9:00 am - 11:00 am
Eagle Peak Ranch Preserve Hike (Canyon Bridge) May 9 Eagle Peak Ranch Preserve Hike (Canyon Bridge) 9:00 am - 12:00 pm
River Days at Barona Cultural Center May 9 River Days at Barona Cultural Center May 9 @ 10:00 am - May 16 @ 4:00 pm Free
Art Reception at Santa Ysabel Art Gallery “Art of the River” by San Diego River Artists Alliance May 9 Art Reception at Santa Ysabel Art Gallery “Art of the River” by San Diego River Artists Alliance 4:00 pm - 7:00 pm Free
Santa Ysabel Open Space Preserve East Wildflower Hike May 10 Santa Ysabel Open Space Preserve East Wildflower Hike 8:00 am - 1:00 pm Free
San Diego River Mouth Interpretive Walk w/ San Diego Bird Alliance May 10 San Diego River Mouth Interpretive Walk w/ San Diego Bird Alliance 2:00 pm - 3:00 pm Free
San Diego River Mouth Habitat Restoration May 12 San Diego River Mouth Habitat Restoration 8:00 am - 11:00 am Free
SDMBA Mission Trails Regional Park Intermediate Ride May 12 SDMBA Mission Trails Regional Park Intermediate Ride 5:30 pm - 7:00 pm
River Days Grant Park Community Stewards May 14 River Days Grant Park Community Stewards 8:00 am - 10:00 am Free
Explore Nighttime and the Night Sky Along the San Diego River at Grant Park May 14 Explore Nighttime and the Night Sky Along the San Diego River at Grant Park 7:30 pm - 9:30 pm Free
ILACSD & Lakeside’s River Park Conservancy: San Diego River Days Cleanup- Cactus Park May 15 ILACSD & Lakeside’s River Park Conservancy: San Diego River Days Cleanup- Cactus Park 3:00 pm - 5:00 pm
Sunset Gardening at the San Diego River Mouth May 15 Sunset Gardening at the San Diego River Mouth 5:00 pm - 7:00 pm Free
Sycamore Canyon/Goodan Ranch Ranger-led Interpretive Hike May 16 Sycamore Canyon/Goodan Ranch Ranger-led Interpretive Hike 8:00 am - 11:00 am Free
San Diego River Days 2026 Plein Air Paint Out May 16 San Diego River Days 2026 Plein Air Paint Out 8:30 am - 12:30 pm
River Days Mission Valley Garden Club May 16 River Days Mission Valley Garden Club 9:00 am - 11:00 am Free
River Days – Hike With a Purpose: BioBlitz at Mildred Falls May 16 River Days – Hike With a Purpose: BioBlitz at Mildred Falls 9:00 am - 12:00 pm Free
Imperial Beach Cleanup – River Days with Surfrider San Diego & San Diego Coastkeeper May 16 Imperial Beach Cleanup – River Days with Surfrider San Diego & San Diego Coastkeeper 10:00 am - 12:00 pm
Kayak Clean-Up: River Days Clean-Up in Mission Valley May 16 Kayak Clean-Up: River Days Clean-Up in Mission Valley 10:00 am - 12:00 pm
Santee Historical Society Craft Bazaar and Butterfly Garden at the Historic Santee Barn May 16 Santee Historical Society Craft Bazaar and Butterfly Garden at the Historic Santee Barn 10:00 am - 2:00 pm Free
Petals & Paint: Grant Park Flower Fence Mural Gathering May 16 Petals & Paint: Grant Park Flower Fence Mural Gathering 11:30 am - 1:30 pm Free
River Days and Nature Nights: Build a Big Brown Bat Buddy May 16 River Days and Nature Nights: Build a Big Brown Bat Buddy 3:00 pm - 5:30 pm
Art Reception for San Diego River Artists Alliance May 16 Art Reception for San Diego River Artists Alliance 5:00 pm - 7:00 pm Free
River Days and Nature Nights: Bat and Moth Event May 16 River Days and Nature Nights: Bat and Moth Event 7:00 pm - 9:00 pm
