⚠️Public Notice: 05/19/2026
The following location is closed to the public until further notice:
Hidden Valley Wildlife Area
Hidden Valley Nature Center
⚠️Public Notice: 04/03/26
Due to inclement weather, the following locations are closed to the public until further notice:
Rancho Jurupa Regional Park
Hidden Valley Wildlife Area
⚠️Public Notice: 03/05/26
Due to high winds, the following locations are closed to the public until further notice:
Rancho Jurupa Regional Park
Hidden Valley Wildlife Area
⚠️Public Notice: 2/11/2026
The following locations are closed due to inclement weather:
Box Springs Mountain Reserve
Hidden Valley Wildlife Area
Santa Rosa Plateau Ecological Reserve
Harford Springs Reserve
Please keep off trails until further notice.
⚠️Public Notice: 1/9/26
Due to high winds, the following locations are closed to the public until further notice:
Rancho Jurupa Regional Park
Hidden Valley Wildlife Area
✅Reopened:
Santa Rosa Plateau Ecological Reserve
✅Public Notice: 12/30/2025
The following locations are reopened to the public:
Rancho Jurupa Regional Park
Hidden Valley Wildlife Area
Mary Tyo Staging Area
⚠️Santa Rosa Plateau Ecological Reserve will remain closed due to inclement weather until further notice.
⚠️Public Notice:
Due to high winds, Rancho Jurupa Regional Park is closed for day use and fishing 12/29/2025.
Regular hours are expected to resume 12/30/2025.
Due to inclement weather, the following locations will remain closed until further notice:
Kabian Park
Hidden Valley Wildlife Area
Mary Tyo Staging Area
Santa Rosa Plateau Ecological Reserve
The following locations are reopened:
Box Springs Mountain Reserve
Harford Springs Reserve
Due to inclement weather, the following locations are closed until further notice:
Kabian Park
Hidden Valley Wildlife Area
Mary Tyo Staging Area
Harford Springs Reserve
Santa Rosa Plateau Ecological Reserve
Box Springs Mountain Reserve
⚠️Public Notice: Due to heavy rain the following trails are closed and will remain closed until cleared for trail hazards 11/22/2025:
Hidden Valley Wildlife Area
Box Springs Mountain Reserve
Harford Springs Reserve
Santa Rosa Plateau Ecological Reserve
✅Public Notice 11/19/2026: The following trails have been cleared of any trail hazards and are reopened for public use:
Hidden Valley Wildlife Area
Box Springs Mountain Reserve
Harford Springs Reserve
⚠️Public Notice: Due to heavy rain the following trails are closed and will remain closed until cleared for trail hazards 11/14/2025:
Hidden Valley Wildlife Area
Box Springs Mountain Reserve
Harford Springs Reserve
Santa Rosa Plateau Ecological Reserve
Fire Restrictions Notice – Effective July 7, 2025 - Due to fire risk, all open fires are prohibited at Mountain Parks and Lodges. This includes the use of briquettes. Propane fires and/or propane BBQ's are allowed under these restrictions. Please adhere to these rules to ensure safety and prevent wildfires. Thank you for your cooperation.