From trailhead head west, climbing a false flat. After a quick downhill you'll see a small reservoir. Head through the narrow gate and make a loop around the lake, then head back. There is also a short trail from the lake heading west to Indiana St., and a small loop around a tiny lake near the trailhead. This trail is mostly doubletrack or road comprised of either small rocks or smooth singletrack. It's nothing special, but makes for a decent afterwork ride, or a nice place to bring a beginner.
Church Ranch Road west to Simms, head north on Simms to 105th. Trailhead is on left at 105th and Simms.
http://www.singletracks.com/item.php?c=1&i=2260