RivCoParks

✅Public Notice 4/06/2026: All weather restrictions have been lifted. Visit a Regional Park or Trail today!

⚠️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 1/10/2026: All weather restrictions have been lifted. Visit a Regional Park or Trail today!

⚠️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: Kabian Park is reopened 12/29/2025. ⚠️Kabian Park is expected to close due to inclement weather on Thursday 1/1/2026.

⚠️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

⚠️Public Notice: Due to heavy rain, Kabian Reserve and Park is closed until further notice. Please remain off trails. 11/13/2025

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.

✅ Public Notice: The following sites and trails have been cleared and reopened for public use 03/16/2025: Santa Rosa Plateau Sylvan Medows