I grew up in Spencerport, so I have a feeling for moisture in the basement - our house was about a 1/4-mile from the town's spring fed water supply.
First, you need to do some landscaping to ensure the land slopes away from the house on the uphill side with a swale or something. Basically, direct the water around the house.
You may need to install a french drain to move any water below grade around the house to the low side.
Make sure any gutters direct the water away from the house far enough, and doing it into the french drain will help, too.
You may want to dig a sump pit and install a sump pump. Unfortuneately, you would normaly want drain tile under the floor (does the crawl space have a floor?).