| 2533.0 | Coolidge Dam is overtopped. Flows of over 120000 cubic feet per second will cause massive bank erosion and damage near Winkleman. | | 2526.0 | Homes threatened on the southeast side of Winkleman. Resulting backup of San Pedro River threatens numerous homes near Dudleyville. | | 2523.0 | Highway 77 bridge approaches overtopped. | | 2521.0 | Water begins to backup into the San Pedro River towards Dudleyville. Highway 77 bridge bottom is reached. | | 2518.0 | Highway 77 bridge abutments are threatened due to debris and bank erosion. | | 2515.0 | Winkleman Flats and other parks near the river are flooded. | | 2511.6 | Flow begins through the Coolidge Dam spillways. | | 2511.0 | Historically, precautionary evacuations in the Winkleman Flats area have taken place. |
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Historical crests are unavailable.
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Low water records are unavailable.
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