Big Dalton Reservoir, located in Glendora, California, is a vital water resource managed by the local government for flood risk reduction and water supply purposes.
Wind
Humidity
Built in 1929, this multi-arch dam stands at a height of 153 feet with a storage capacity of 1290 acre-feet. The reservoir's primary source, Big Dalton Wash, serves a drainage area of 4.3 square miles and covers a surface area of 26 acres.
With a high hazard potential but a satisfactory condition assessment as of September 2017, Big Dalton Reservoir undergoes regular inspections to ensure its safety and functionality. The dam's last inspection in November 2020 affirmed its structural integrity, meeting regulatory standards set by the California Department of Water Resources and Safety of Dams. In case of emergencies, the reservoir is equipped with emergency action plans, although further details on their preparation and implementation are not specified in the available data.
Water resource and climate enthusiasts fascinated by the engineering marvels of dams and reservoirs will find Big Dalton an intriguing case study in flood risk management and water storage in the Los Angeles area. Its location in a densely populated region underlines the importance of maintaining and monitoring such critical infrastructure to safeguard communities and ecosystems against potential hazards and ensure a sustainable water supply for future generations.
Year Completed |
1929 |
Dam Length |
480 |
Dam Height |
153 |
River Or Stream |
Big Dalton Wash |
Primary Dam Type |
Multi-Arch |
Surface Area |
26 |
Hydraulic Height |
141 |
Drainage Area |
4.3 |
Nid Storage |
1290 |
Hazard Potential |
High |
Nid Height |
153 |
| Location | Reservations | Toilets |
|---|---|---|
Big Dalton Campground
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Bohelli Regional Park
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Lower Bear Cyn
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Coldbrook
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Coldbrook Campground
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Glenn Camp Campground (Hike or bike in 7 miles)
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Laurel Gulch To Confluence With Mineo Canyon (Se 1/4, Sw 1/4, Sec 17, T2N, R8W)
North Fork - Confluence Of Soldier And Coldbrook Creeks (Se1/4,Sw1/4, Sec) 5, T2N,,R9W To Conflluence With West Fork Of San Gabriel (Sw 1/4,Sw1/4, Sec 17, T2N, R8W)
Gaging Station Below Spillway Of Cogswell Dam (Ne 1/4, Se 1/4, Sec 19, T2N, R10W) To Confluence With Nf San Gabriel River (Sw 1/4.Sw 1/4, Sec 15, T2N, R9W)