Civic Plaza, which is part of Prairie Heritage Park in Altoona, has a splash pad. I wouldn't make a special trip for it, but it's fun to combine with the Enabling Garden nearby or if you want to go a bit further, it's 0.43 mile to the Altoona Library playground and storywalk.
SHADE: shaded area with benches + shady grassy areaRESTROOMS: none, closest are inside Hy-Vee and the portable restroom at the Enabling Garden
PARKING: off-street parking near the splash pad
NEARBY: 0.17 mile to the Enabling Garden via paved trail