Minnesota Reservoir

The Minnesota Reservoir is a critical water supply improvement serving the growing West Valley area of Yakima. Working with Nob Hill Water Association, RH2 provided planning, design, and permitting services for a new 1.4-million-gallon reservoir that replaces two aging facilities and improves long-term system reliability.

Early project development included advancing the design to 30 percent in support of a successful Drinking Water State Revolving Fund (SRF) loan application, followed by final design and comprehensive permitting. Environmental review and approvals included stormwater permitting, SEPA/NEPA, DOH project reporting and design review, land use approvals, and cultural and historic assessments.

Project delivery required careful coordination due to the narrow construction window created by reservoir demolition and seasonal peak demand. When external funding delays disrupted the schedule, RH2 supported the District with temporary operating strategies that maintained reliable service through peak summer conditions while the long-term solution advanced.