Son & I doing the SC Foothills trail April 17 - 21. Start north @ Table Rock and go south. Their map is very basic, no indications of water sources. Looking for advice on water sources @ north/start. Day 1 from Table Rock to Sassafras is a 'honk'. Rather not have to carry 2 days' worth of water up all that - so like to know if there are reliable sources. Thanks.