Marks Guide for Alberta Paddlers Book. This guide Includes sixty-seven reach reports for Alberta's rivers and lakes, stretching from the Milk River in the south to the Slave River in the north, from the Cold River in the east to the Kootenay River in the west. This guide is both an introduction to Alberta paddling for new paddlers, and an introduction to those new to paddling in Alberta. This expanded guidebook includes location maps for each report, a hydrograph for river flows, distance and gradient calculations, UTM - GPS/Map grid references for important features, river notes and rapid classes and lots of pictures to illustrate the great paddling available to Alberta paddlers.