From the canyons of Big Bend to the cypress swamps of Pine Island Bayou, the waters of Texas have something for most every type of paddler and every paddling mood. One might float the diminutive Comal River, argued to be the shortest river in the world. Another might dig deep and follow the four-day, 260-mile route of the Texas Water Safari, which Canoe & Kayak Magazine referred to as “The World’s Toughest Canoe Race.” Whitewater is here too. Lakes are as well. And, the Texas Gulf...