Lake Hodges Dam Project Faces Rising Costs

The future of one of San Diego’s most vital water landmarks is in jeopardy as ballooning cost estimates and funding disputes have stalled plans to replace the aging Lake Hodges dam. Once on track for a 2029 rebuild, the project now faces a critical funding gap after the San Diego County Water Authority withdrew its support, leaving the city to scramble for alternatives to satisfy state safety mandates.

The Cost Crisis: From Millions to Hundreds of Millions

For years, the City of San Diego planned to construct a new dam 100 feet downstream of the existing structure to ensure long-term water security and public safety. However, a recent 386-page analysis conducted by an outside consultant revealed a staggering increase in projected expenses.

The preliminary cost estimate for the full replacement project was $275 million. The updated design study determined a new estimated range of $474 million to $697 million. This price surge has fundamentally altered the project’s financial viability.

The original funding strategy relied on the San Diego County Water Authority covering 50% of the costs, with the remaining half split between the city and two smaller water districts. Following the updated analysis, the water authority withdrew its commitment, stating that building a new dam falls outside the cost-share agreement.

A Dam Labeled ‘Unsatisfactory’

The urgency of the project stems from a 2022 inspection by California’s Division of Safety of Dams (DSOD), which identified concrete deterioration, cracks, and rebar exposure. The state labeled the 106-year-old dam unsatisfactory.

“DSOD’s inspections have observed that the dam has advanced deterioration putting the dam in an unacceptable condition for normal operating conditions.” Erik Malvic, Division of Safety of Dams manager

To mitigate the risk of a catastrophic failure—particularly during a major earthquake—the DSOD has mandated that water levels be restricted to 280 feet, which is 35 feet below the dam’s spillway. While the city maintains there is not an imminent threat of failure, the state requires a permanent interim solution by 2029.

The High Price of Low Water

The forced reduction in water levels has triggered a cascade of economic and environmental consequences for the region:

• Wasted Water: The city has conducted controlled releases of 13.5 billion gallons of water over the last four years to maintain safe elevations.
• Stranded Assets: The San Diego County Water Authority spent $208 million on a pump system to transfer water to the Olivenhain Reservoir. However, the pump requires a water level of 290 feet to operate, leaving the system idle.
• Rising Rates: Local districts, such as the Santa Fe Irrigation District, have seen costs spike. Water that previously cost $250 to treat per acre-foot now costs over $1,600 because the district must purchase imported water from the county authority.
• Wildfire Fears: Local residents have warned that lower reservoir levels increase the threat of wildfires in an already high-risk area.

The Path Forward: Alternatives and Legal Battles

With the full replacement project in limbo, the city is now evaluating less costly alternatives. GEI Consultants are currently conducting an alternatives analysis, with a recommendation expected by December 2026.

In March 2026, the San Diego City Council approved two 10-year design services contracts with HDR Engineering Inc. And Stantec Consulting Services Inc., each capped at $75 million. These contracts are intended to support a broader, multi-decade dam safety program across the city’s 11 DSOD-regulated dams, though they do not provide a specific blueprint for Lake Hodges.

The crisis has also moved into the courtroom. A trial regarding the city’s alleged negligence in the upkeep of the dam is slated for spring 2027.

Key Takeaways: Lake Hodges Dam Status

As the city awaits the December 2026 recommendation, the community remains divided between those urging a full replacement to restore the reservoir’s capacity and those concerned about the impact of soaring costs on ratepayers.