Soundside Why is there a reservoir in Volunteer Park? If you've ever taken a walk around Volunteer Park, in the Capitol Hill neighborhood of Seattle -- you know that smack dab in the middle of this bustling public space is a pool of water. It's surrounded by a chain-link fence, with a walking path looping around the perimeter, and signs saying 'do not feed the birds'. It's not just a reflecting pool or a lake. It’s a reservoir.