Riverkeeper, Inc is just one of 35,000+ groups listed by members at iGive. Here's a little more detail on them, as provided by members or the organization itself:
Riverkeeper’s mission is to protect the environmental, recreational and commercial integrity of the Hudson River and its tributaries, and to safeguard the drinking water of nine million New York City and Hudson Valley residents.
Total raised through iGive: $568.18
The most recent check issued to Riverkeeper, Inc by iGive was sent on Oct 31, 2013 for $28.44.