Quick answer
Where downspout water should go in Northwest Arkansas: At least 4 to 6 feet from the foundation on a typical lot, and farther on a slope or a tight lot. A splash block alone rarely does it here, because it only moves water a foot or two. Extensions handle many homes, and on the steep, wooded lots common in Bella Vista, Rogers and Fayetteville, buried pipe to a deliberately chosen downhill daylight point is usually the right answer. Never discharge uphill, against a retaining wall, into a low pocket or onto the neighbor below. Call (479) 370-5248 or get a free quote online.