Charity, Gasworks Partnerships, had turned to crowd funding website Spacehive.com after Games chiefs failed to deliver on promises to regenerate the industrial hinterland that runs along the Lea from the Olympic Park to the Thames.
Opening up the sealed Cody Dock, owned by the Newham charity, would complete a 26-mile pedestrian route linking Hertfordshire and Thames through the Olympic Park.
Currently tourists using the new £60m Emirate Air Line cable car will be unable to directly access the Park on foot or by bike.
The 150-year-old dock has been neglected for decades, but local campaigner Simon Myers hopes to create space for entrepreneurs and artists, as well as moorings for 50 boats and a nature reserve for locally grown produce. The area is expected to be boosted by around 75 jobs.
Myers is aiming to open the site before the Games start this summer. More than £56,000 has been raised and the charity is hoping the public and private firms will raise the remaining £83,000 through Spacehive.com.
Vodafone has joined Poirot star David Suchet in supporting the scheme, which is also backed by comedian Andi Osho and singer and activist Billy Bragg.
Myers said: "We're thrilled Vodafone has thrown their weight behind Cody Dock. We’ve got three weeks left to raise £83,000, but with the support of Vodafone and other locally-based firms like Siemens, Ikea and Westfield, we can transform this corner of east London in time for the Games."