Salinas adopts updated stormwater master plan, flags long funding gap

The Salinas City Council adopted an update to the city’s stormwater master plan on March 11, directing staff to continue seeking grant and partnership funding while noting the plan identifies substantial long‑term funding needs.

The master plan documents roughly 145 miles of storm infrastructure in Salinas, more than 6,000 stormwater assets and 70+ outfalls to creeks that flow to Monterey Bay. Heidi Nigameyer, the city’s stormwater program manager, told council that an asset condition and hydraulic analysis shows a significant portion of the system is aging and at elevated risk of failure.

Valerie Huff of Wallace Group summarized the technical work: the team field‑surveyed inlets, manholes and outfalls, developed a hydraulic model to route rainfall and runoff into the pipe network, and ranked locations for intervention by frequency and severity of flooding, impacts to public safety and climate resiliency. The plan identified 18 high‑priority projects (primarily inlet upsizing, sediment removal and targeted studies to reduce agricultural runoff entering the city) with an estimated construction total just over $12 million. Additional medium‑ and low‑priority pipeline projects raise the master‑plan cost substantially; the report’s moderate service scenario estimates roughly $237 million over 20 years to proactively replace the riskiest assets and expand maintenance.

Heidi Nigameyer said the stormwater program currently lacks a dedicated local funding source and relies on the general fund for repairs and emergencies. "If we continue business as usual ... after 20 years, over a third of the city's assets will be at very high risk of failure," she told council. The plan presents a three‑tier view: minimal maintenance (low funding), routine upkeep (moderate funding) and an enhanced program (significantly higher funding to eliminate high‑risk assets over 20 years).

Council members and members of the public raised the practical consequences of flooding and deferred maintenance: blocked inlets that cause street flooding, sediment and agricultural runoff that build up in channels, pavement damage and, in extreme cases, sinkholes and infrastructure collapse elsewhere. Wallace Group pointed to examples from 2023 where storm drains and outfalls required emergency work and where pumps and pipe failures briefly compromised roadways.

Staff noted the city has pursued grants and partnerships — including an urban greening grant, a NOAA climate resiliency challenge submission and work with state revolving funds — with limited success to date. Nigameyer said recent funding measures such as Proposition 4 could create new opportunities, but staff emphasized that many grant programs are targeted and cannot substitute for a sustained local revenue source. Over the longer term, the plan points to the feasibility study and stakeholder work required to consider a stormwater utility or dedicated fee, which would allocate costs more directly to impervious surface or EDUs.

Council action and context: The council adopted the master plan and related appendices by unanimous roll call vote. Adoption places the ranked projects into the city’s planning record and authorizes staff to pursue identified funding strategies and follow‑up studies; it does not itself appropriate construction funds. Several council members urged proactive outreach and coordination with community groups to explain the plan and seek partnerships.

Ending: City staff said they will use the master plan as the basis for grant applications, capital programming and targeted maintenance. Council adoption makes the priorities official; funding and any rate or fee decisions would require subsequent council action and public processes.