See < http://en.wikipedia.org/wiki/Portneuf_River_(Idaho) > for notes on what and where the Portneuf River is. Draining over 1,300 square miles, it is one of MANY tributaries, ultimately, of the Columbia River in the northwestern U.S. It is "our local river," starting 25 miles east and emptying into the Snake River 10 miles west of Pocatello. It carries calcium carbonate and deposits travertine in "reefs" that build over time, forming lovely fish habitat and swimming pools...except that the rock can be excruciatingly rough to the touch.
Portneuf River at Osprey Grotto
River-edge Grasses, Reflected
River View
River-edge Emergents
Ice Pearls in February
October Reflection, Portneuf River
Portneuf River Serenity
Water Tumbles over Reef
Portneuf River Cascades over Travertine Reef
The Tubers' Put-in
Cascades in the Portneuf River
Toponce Creek Watershed
Common Rabbitbrush
Pelicans Flee
Aster? Hoary Aster?
Portneuf River at Ft. Hall Mine Rd., Northward
Portneuf River Looking South from Ft. Hall Mine Road