This is quite literally the best way to get to know the River Severn - we spent a couple of hours steering our small boat along the river and it was a surprisingly relaxing experience. Severn Expeditions offers day boat hire on the river, providing both self-drive and skippered options from Upton Marina.
With free parking, full tuition provided, and the chance to bring along the whole family (including dogs), it's a fun and easy way to enjoy the tranquil waters and stunning scenery of the section of river.
Pro-tip:
Take some food for a floating picnic.