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        "damHeight":181,
        "damLength":4780,
        "distance":null,
        "drainageArea":50800,
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        "lengthOfLocks":0,
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        "maxDischarge":401700,
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        "projectDescription":"The Painted Rock Dam was constructed by the U.S. Army Corps of Engineers (USACE) between 1957-59 for flood risk management.  It is located on the Gila River in Maricopa County, California about 20 miles northwest of the town of Gila Bend.  Painted Rock Dam consists of an earthen main embankment, two saddle dikes, a gated outlet works, and a detached broad-crested spillway. The main embankment is 181 feet above the original streambed and is 4,796 feet long.  The left saddle dike is 1,000 feet south of the main embankment and is 525 feet long.  The right saddle dike is located between the east abutment of the main embankment and the spillway and is 200 feet long.  The detached broad-crested spillway is located about 600 feet northeast of the main embankment and has a crest length of 620 feet.  The outlet works is located in the east abutment of the main embankment and consists of an approach channel, gated intake structure, outlet conduit, and outlet channel.  The length of the outlet works is 1,108 feet. The project reduces the risk of flooding to the communities of Yuma, Wellton, Gadsden, and Somerton in Arizona and the Imperial Valley in California.  The project also provides flood protection to highways, to transcontinental railroads, and to agriculture lands.",
        "riskCharSummary":"A risk assessment of Painted Rock Dam was completed in 2022 and classified the risk as very high.  Although unlikely, risk is driven by four potential failure modes.  Risk of the main dam embankment are primarily driven by the potential for overtopping of the dam embankment, loss of the spillway sill and wall, and concentrated leak erosion along the rock knob.  Risk at the project Saddle Dike is driven by the potential for overtopping.  The primary consequences centers are Yuma, AZ and Mexicali, Mexico.  The estimated population at risk is between 726,000 and 917,000.  Economic consequences are estimated to be more than $6 Billion.\n\nTo further an understanding of the risk posed by Painted Rock Dam, USACE has begun a higher-level risk assessment, an Issue Evaluation Study (IES), to better define the risks posed.  The IES is underway and will focus on overtopping modeling, field investigations, and detailed analysis of the erosion potential of the main embankment.  While this study continues, USACE has begun elevated Emergency Preparedness by conducting a Tabletop Planning Exercise in Yuma, AZ and coordination meetings with Mexican officials.  Continued emergency planning will be conducted to inform and prepare first responders as these studies continue.",
        "riskManagementMeasures":"To ensure USACE is taking all steps to reduce the risk to the public, USACE will continue to work closely with state and local emergency managers, conducting emergency exercises and incorporating any new information into our Emergency Action Plan. USACE closely follows rainfall forecasts to determine when high water events may occur to provide information for any necessary flood warnings. USACE is working with local communities to provide opportunities to engage with residents and schools to help them understand how they can better prepare for a flood.  All dam safety staff are regularly trained to monitor and evaluate the condition of the dam based on key risk components.  USACE regularly inspects and monitors instruments to check the health of the dam and increase this monitoring during lake level rises.  This ensures that the structure is performing as designed and could help detect any areas of potential concern.  Regular maintenance and repairs are performed as needed to keep the dam functioning properly.  Future risk communication activities include updates to the Emergency Action Plan and coordinating these plans first responders and development of a formal Risk Communication Plan.",
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        "yearCompleted":1960,
        "congDist":"Congressional District 07, Arizona",
        "city":"AGUA CALIENTE",
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