Hmmmm...The only lakes that are accessible, and near the Detroit Reservoir, are Tumble, Opal, Elk, Upper, & Lower Twin Lakes. Some you can't get a vehicle to. None of which converge with Detroit Lake via creek or river. Only one or two real small lakes too, as Tumble, Elk, and the Twins are fairly large bodies of water, not big, big, but definitely not small by any means. Wonder where you were?