Splash pads in Redmond, Washington

Grass Lawn Park is Redmond's neighborhood mainstay and the spray feature is the kind of low-key amenity that suburban families plan a Tuesday afternoon around. Ground sprays sit near the playground with sports fields and the off-leash dog area beyond, free parking in the lot. Restrooms are clean and close. Best on weekday mornings before the after-camp wave hits around 2pm. Parent gotcha: the spray area is small — this is a neighborhood park, not a destination — and the surrounding fields are full sun, so shade gear (umbrella, hat) makes the difference. Cascade wildfire smoke from late August often pushes AQI here past safe play levels. Pair with a Marymoor Park dog walk if you want a longer outing.

Marymoor is the Eastside's big-day park — 640 acres of off-leash dog area, climbing rock, model airplane field, concert venue, and a smaller splash zone in the playground area near the climbing rock. The spray pad itself isn't the main attraction, but it's a perfect cool-down between dog walks and playground time. Free parking lot is huge but fills on summer Saturdays — arrive before 11am. Restrooms scattered throughout the park, all clean. Parent gotcha: the spray area is small relative to the park's reputation, so set kids' expectations as the appetizer to the overall Marymoor day. Late summer smoke from Eastern Washington fires often arrives here via easterly Cascade winds — Lake Sammamish Valley traps it. Pair with a Redmond Town Center lunch after.