The 38th Avenue Tank Project is a nearly completed water storage improvement that illustrates how complex hydraulic, structural, and community challenges can be successfully addressed through careful planning, communication, and adaptive problem-solving. The project involved construction of a new 2.5-plus million gallon prestressed concrete storage tank in a highly constrained urban environment. A key driver of the project was the need to raise the operating elevation of the tank approximately 27 feet so it would float properly on the hydraulic grade line. The existing tank had been submerged, which made draining difficult and introduced potential water quality concerns. The new tank was designed to meet both current operational needs and long-term system growth expectations. The tank site is surrounded by residential homes and offered virtually no space for staging or material laydown. Early and frequent communication with nearby residents was critical to addressing concerns related to noise, traffic, and construction duration. Through proactive outreach and transparency, construction progressed with minimal complaints despite the scale and duration of the work. Structurally, the tank is supported by a series of two retaining walls, adding complexity to both design and construction. A time-critical challenge occurred when concrete cylinder breaks from the retaining wall pours did not perform as expected. The project team had to quickly evaluate structural integrity through alternative testing and engineering judgment, while also implementing measures to improve future sampling and testing procedures. This experience underscored the importance of flexibility and rapid decision-making in construction management. Additional challenges included system shutdowns affecting an entire pressure zone and tie-ins to an existing brittle cast iron water main. Multiple unforeseen leaks were discovered during construction, expanding the project scope but ultimately resulting in significant reductions in system water loss. Lessons learned included the realization that a single consolidated vault would have been preferable to multiple individual vault boxes, simplifying access and maintenance. Both the foundation and roof pours were major undertakings that required detailed sequencing and coordination, and each was completed successfully through deliberate planning. When it came time to place the tank into service, internal concerns arose regarding whether the tank would fill as intended. Despite these concerns, the hydraulics performed as designed, and the tank filled successfully. Planned future transmission main improvements will further reduce head loss and allow the tank to fully utilize its storage capacity. This presentation will share lessons learned from designing and constructing a “not-your-typical” tank project and offer insights applicable to urban water storage projects nationwide.