Click on highlighted event for more information.
Events are subject to change due to weather or other circumstances, please contact the park to verify events.
| 2010 | ||
| January 9 | Trout Derby | Yucaipa |
| January 23 | Junior Fishing Workshop | Glen Helen |
| February 6 | Trout Derby | Prado |
| February 13 | Junior Fishing Workshop | Mojave Narrows |
| February 13 - 15 | Calico Civil War | Calico Ghost Town |
| February 20 | Stargazing & Night Talk | Lake Gregory |
| March 20 | Trout Derby | Mojave Narrows |
| April 10 | Trout Derby | Glen Helen |
| April 9 - 11 | Civil War Re-enactment | Prado |
| April 18 | Juvenile Diabetes Car Show | Cucamonga Guasti |
| April - November | Concert Season at San Manuel Amphitheater at Glen Helen | Glen Helen |
| May - September | Catfish Season | Cucamonga-Guasti, Glen Helen, Prado, Mojave Narrows, Yucaipa |
| May 1 & 2 | Lake Matthews Kennel Club Dog Show | Prado |
| May 8 - 9 | "Bluegrass in the Spring" Festival | Calico Ghost Town |
| May - Sept. (Memorial Day weekend thru Labor Day weekend) | Swim and water slide season | Cucamonga-Guasti, Yucaipa, Glen Helen, Lake Gregory |
| June 18 - 20 | Huck Finn Jubilee | Mojave Narrows |
| August 14 & 15 | Dragon Boat Races | Lake Gregory |
| October 2 &3 | Marching Thru History Exposition | Prado |
| October 8- 10 | Calico Days | Calico Ghost Town |
| Oct. 22 - 24 & 29 - 31 | Calico Ghost Haunt | Calico Ghost Town |
| Nov - April | Trout season | Cucamonga-Guasti, Glen Helen, Prado, Yucaipa |