As the name suggests, this cache is on an island - so.......you will need a boat of some sort. A canoe or kayak is recommended, though it is navigable by motor boat or jet ski.
Please take a trash bag and bring out some trash - there always seems to be some litter, in the river and especially on the banks.
Park at the north Augusta Boat Ramp at N33° 29.648 W81° 59.417. Head upstream. At about the 1/4 mile mark you'll pass the point (33°29.879 81°59.480) on the Georgia side where historic Rae's Creek meets the mighty Savannah. But just before that, if you look carefully you'll see the shameful remains of the old abandoned City of Augusta garbage dump (see the picture below). This is a good example of how not to use wetlands.
At the .35 mile mark you'll see the North Augusta water intake tower on the right (SC) bank.
Just past that you'll see the island where this cache was originally located. It went missing in late 2004 or early 2005, so it was relocated to another nearby island with less likelihood of being discovered. The first island has the ruins of an old island fish camp, which is apparently still used as a weekend camping area. It's worth a side trip to get out and explore it a little. As you head on up to the next island, it is best to approach on the Georgia side. See Hints for more detail.
The cache is located about 1.01 miles from the boat ramp. The cache is in a standard ammo can.
By the way, even though you enter the river on the South Carolina side, I have listed this as a Georgia cache, because in 1787, Georgia and South Carolina agreed in the Treaty of Beaufort that all islands in the river belong to Georgia.
After you find the cache, go on up around the islands and come back down the Carolina side. It is a very scenic trip, only broken up by views of encroaching riverfront development on the Carolina side. But, just upstream of these first two islands are the beginnings of the fall-line rapids, so use caution as you go around the tip of the island (not recommended if the river is at flood stage). As you come back down the Carolina side of the river, look for the old quarry across from Rae's Creek, just downstream of the North Augusta Recreation Center. At high water, you can canoe right into it, otherwise you may have to get out and walk a bit.
Enjoy,
GeoDoozer