A new pump station and expanded drainage network are now part of San Marco’s stormwater system, giving Jacksonville’s flood-prone neighborhood another way to move heavy rain away from streets. By Oct. 6, the City of Jacksonville listed both phases of the LaSalle Street Drainage Improvement Project as complete, and two local television newsrooms reported that city officials had confirmed the project was finished and operating.
The project centers on a new pump station near LaSalle Street and the St. Johns River. News4JAX reported that the station is designed to move as much as 60,000 gallons of water per minute. The same report said crews upgraded nearly a mile of the surrounding stormwater collection system, adding larger pipes that carry water from low-lying parts of the basin toward the station.
That capacity is a design specification, not a promise that streets will never flood. News4JAX noted that intense rainfall can still overwhelm the system, and Action News Jax likewise reported that the city says flooding remains possible when a large amount of rain falls in a short time. The project is intended to reduce flooding and help water recede faster, not eliminate every risk.
News4JAX also reported seeing flooding in San Marco on Oct. 6. Its report does not establish whether that water was in the LaSalle basin or measure how the new system performed, but it is a reminder that this is a continuing flood-risk issue, not a problem the project can be assumed to have solved.
Jacksonville’s I Dig Jax project page lists the work under completed projects. It describes a two-phase effort to improve drainage along LaSalle Street and in the surrounding San Marco neighborhood through a pump station, stormwater outfall and expanded underground drainage. The city lists both phases as complete and gives the overall project timeline as 2024 to 2026.
The first phase built the pump station and outfall. The second upgraded pipes and inlets that direct runoff through the collection system. The sequence matters because a pump can move water only after it reaches the station; the underground connections help gather and route it. News4JAX reported that the outfall carries pumped stormwater to the St. Johns River.
News4JAX said the upgrades are designed to reduce flooding during a 50-year, 24-hour rainfall event and to help floodwaters recede more quickly during severe tropical weather. That is a design target, not a guarantee against every storm. Both local reports say the city cautions that a large amount of rain in a short time can still produce flooding.
The completed work follows years of recurring drainage concerns in San Marco. News4JAX described streets that have flooded during heavy downpours, vehicles that stalled and water that reached the doors of some businesses. Those reports explain why a capacity upgrade matters locally, while the current reporting does not provide a measured before-and-after estimate of how much water or flood damage the project has reduced.
The two local outlets reported the completion on Oct. 6 after speaking with city officials. The city’s project page provides the primary status record and lists the infrastructure delivered; News4JAX and Action News Jax independently reported the city’s confirmation. The exact day construction crews finished was not specified in the material reviewed, so the safe milestone is that both phases were listed complete and the city confirmed operation by Oct. 6.
Capacity is useful context, but it is not an outcome measurement. The 60,000-gallon figure describes the station’s stated pumping ability, not the amount it has moved in a storm or the volume kept out of homes and businesses. Action News Jax said flooding had visibly declined after the phases were completed, but did not attach a measured comparison or a timeframe to that observation. The reports reviewed for this article do not provide a before-and-after flood study, so the broader result will need to be assessed through monitoring over time.
The project does not remove the need to pay attention to forecasts, road closures or local flood alerts. Instead, it adds equipment and drainage capacity to a neighborhood system that has had to handle intense rain. In a city shaped by waterways and tropical weather, that kind of behind-the-scenes work is part of making daily routes and homes better prepared for storms.
For San Marco residents, the practical test will come over time: how the upgraded system performs in real storms, and how quickly water clears from the streets it serves. The available reports offer a clear starting point, not a final score. The pumps, outfall and larger drainage network are in place; continued monitoring will show how much difference they make.
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