Editing Grand Teton National Park (section)

=== Lakes and rivers ===
{{See also|Snake River| Lakes of Grand Teton National Park}}
[[File:Oxbow Bend outlook in the Grand Teton National Park.jpg|right|thumb|Oxbow Bend on the Snake River]]
Most of the lakes in the park were formed by glaciers and the largest of these lakes are located at the base of the Teton Range.<ref>{{cite web|title=Lakes and Ponds|url=http://www.nps.gov/grte/naturescience/lakes.htm|work=Natural Features and Ecosystems|publisher=National Park Service|access-date=February 4, 2012|date=December 7, 2011|url-status=live|archive-url=https://web.archive.org/web/20121108080833/http://www.nps.gov/grte/naturescience/lakes.htm|archive-date=November 8, 2012|df=mdy-all}}</ref> In the northern section of the park lies Jackson Lake, the largest lake in the park at {{convert|15|mi|abbr=on}} in length, {{convert|5|mi|abbr=on}} wide and {{convert|438|ft|abbr=on}} deep.<ref name=stats1/> Though Jackson Lake is natural, the Jackson Lake Dam was constructed at its outlet before the creation of the park, and the lake level was raised almost {{convert|40|ft|abbr=on}} consequently.<ref name=reclamation/> East of the [[Jackson Lake Lodge]] lies [[Emma Matilda Lake|Emma Matilda]] and [[Two Ocean Lake]]s. South of Jackson Lake, [[Leigh Lake|Leigh]], [[Jenny Lake|Jenny]], [[Bradley Lake|Bradley]], [[Taggart Lake|Taggart]] and [[Phelps Lake (Wyoming)|Phelps Lake]]s rest at the outlets of the canyons which lead into the Teton Range. Within the Teton Range, small alpine lakes in [[cirque (landform)|cirque]]s are common, and there are more than 100 scattered throughout the high country.<ref name=keller>{{cite web|last=Keller|first=Lynn|title=Geologic Features and Processes|url=http://www.nature.nps.gov/geology/inventory/publications/reports/grte_gri_rpt_body_print.pdf|work=Grand Teton National Park and John D. Rockefeller Jr. Memorial Parkway Geologic Resources Inventory Report|publisher=National Park Service|access-date=February 4, 2012|page=19|year=2010|url-status=live|archive-url=https://web.archive.org/web/20120923122521/http://www.nature.nps.gov/geology/inventory/publications/reports/grte_gri_rpt_body_print.pdf|archive-date=September 23, 2012|df=mdy-all}}</ref> [[Lake Solitude (Wyoming)|Lake Solitude]], located at an elevation of {{convert|9035|ft|abbr=on}}, is in a cirque at the head of the North Fork of Cascade Canyon. Other high-altitude lakes can be found at over {{convert|10000|ft|abbr=on}} in elevation and a few, such as [[Icefloe Lake]], remain ice-clogged for much of the year.<ref name="ortenburger2">{{cite book|last=Ortenburger|first=Leigh|title=A Climbers Guide to the Teton Range|date=November 1, 1996|publisher=Mountaineers Books|isbn=978-0-89886-480-9|page=192|author2=Reynold Jackson}}</ref> The park is not noted for large waterfalls; however, {{convert|100|ft|m|-high|adj=mid}} [[Hidden Falls (Teton County, Wyoming)|Hidden Falls]] just west of Jenny Lake is easy to reach after a short hike.<ref name="dayhikes">{{cite web|title=Day Hikes|url=http://www.nps.gov/grte/planyourvisit/upload/Dayhikes10.pdf|publisher=National Park Service|access-date=March 26, 2012|date=March 2010|url-status=live|archive-url=https://web.archive.org/web/20121108041016/http://www.nps.gov/grte/planyourvisit/upload/Dayhikes10.pdf|archive-date=November 8, 2012|df=mdy-all}}</ref>

From its headwaters on Two Ocean Plateau in Yellowstone National Park, the Snake River flows north to south through the park, entering Jackson Lake near the boundary of Grand Teton National Park and John D. Rockefeller Jr. Memorial Parkway.<ref name=snake>{{cite web|title=Floating the Snake River|url=http://www.nps.gov/grte/planyourvisit/upload/Floating10.pdf|publisher=National Park Service|access-date=February 4, 2012|date=March 2010|url-status=live|archive-url=https://web.archive.org/web/20121108080350/http://www.nps.gov/grte/planyourvisit/upload/Floating10.pdf|archive-date=November 8, 2012|df=mdy-all}}</ref> The Snake River then flows through the spillways of the Jackson Lake Dam and from there southward through Jackson Hole, exiting the park just west of the Jackson Hole Airport.<ref name=snake/> The largest lakes in the park all drain either directly or by tributary streams into the Snake River. Major tributaries which flow into the Snake River include [[Pacific Creek (Teton County, Wyoming)|Pacific Creek]] and [[Buffalo Fork (Wyoming)|Buffalo Fork]] near [[Moran, Wyoming|Moran]] and the [[Gros Ventre River]] at the southern border of the park. Through the comparatively level Jackson Hole valley, the Snake River descends an average of {{convert|19|ft/mi}}, while other streams descending from the mountains to the east and west have higher gradients due to increased slope.<ref name=geology/> The Snake River creates [[Braided river|braids]] and channels in sections where the gradients are lower and in steeper sections, erodes and undercuts the cobblestone terraces once deposited by glaciers.<ref name=geology/>