A good way to increase pressure for water would be a Sump Pump. Simply run a drop cord to the barrel, plug in the sump pump and connect the hose to the sump pump. That should help you move some water.
Thanks for the question,
Andy Love
Curiosity got the best of me yesterday and I finally retrieved the book, which maneuver over here contains thirteen stories that capture the agony and ecstasy of being thirteen from my bookshelf