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San Mateo City hears update on creek permitting, drainage assets and volunteer flood preparedness
Summary
City officials and staff discussed a multi‑year permitting strategy for recurring creek maintenance, the status of stormwater pumps and cameras, pipe material options, and proposals to organize volunteers for sandbagging and CERT activation after recent flooding.
San Mateo City Council received an update on the city’s stormwater and creek maintenance program that emphasized the need for extended permitting, outlined current pump‑station and surveillance coverage, and recorded community suggestions for volunteer sandbagging and emergency response coordination.
Catherine, the consultant on the project, told council members that securing a programmatic permit to cover the full suite of recurring creek maintenance over a five‑year period would likely require a lengthy environmental review. She said staff could in the short term pursue emergency permitting or similar interim approvals to allow advanced maintenance this summer while an environmental impact review (EIR) proceeds, but the full programmatic authorization would be contingent on completing that environmental review.
The update included current asset and operational details. Public Works staff said the city maintains 10 storm drain pump stations and that crews regularly check pump stations and installed trash screens to reduce debris reaching sump pumps. “We have 10 storm drain pump stations and so our folks are out there regularly checking all those stations,” Public Works staff said.
Catherine described the city’s near‑term surveillance deployment: nine cameras are active across the network, with counts provided for specific sites — Poplar (1), Marina Laguna (3), and two each at the 40 Second Avenue underpass and El Camino. She said three additional planned camera locations (displayed as yellow dots on the presentation) had not yet been installed and that staff could return to council if more cameras were recommended after initial operations.
Council members pressed for data to support follow‑up work. One councilmember asked staff to provide the council with the number of drains that are currently “adopted” so council members could coordinate with homeowners’ groups and district offices to increase adoption of unadopted drains. Staff agreed to supply that information to the council.
The presentation also addressed pipe materials and repair options. Public Works staff and the consultant described corrugated metal pipe as prone to corrosion and noted that rehabilitation options such as lining or concrete encasement can be more cost‑effective than full pipe replacement in some cases. Public Works staff noted PVC or high‑density polyethylene (HDPE) are commonly used today in new pipe installations and said those materials are less likely to experience the same corrosion issues as older corrugated metal pipe.
Councilmembers and community members raised non‑infrastructure preparedness items tied to recent flooding. One councilmember suggested coordinating with local scout troops and high school service clubs to prefill sandbags and assist vulnerable residents, saying volunteers could help deliver sandbags to seniors. The same councilmember, referencing past flooding on Dec. 31, said the Community Emergency Response Team (CERT) was not activated and proposed developing an indicator or trigger to guide CERT activation in future events so available volunteer resources are used when appropriate.
No formal motions or votes were taken during the discussion. Staff said they would return with the requested data — including the number of adopted drains and any recommendation on adding cameras — and with further details as the EIR and permitting processes progress.
