Is it all uphill from the creek to your plants? I use a gas-powered pump for the same type of situation. It wasn't cheap, and the hose wasn't particularly cheap either, but it will fill a 55 gallon barrel in about 40 seconds and hardly uses any gas. It's also nice to have around when I'm having a bonfire.
Whichever pump you choose, keep the intake hose short and the outlet long for it to work properly. Make sure to run some type of strainer on the intake to protect the pump as well.