| 词条 | California Hill |
| 释义 |
| name = California Hill | nrhp_type = | image = California Hill P6060594.JPG | caption = California Hill, rising from the South Platte River Valley to the crest to reach the North Platte River on the California and Oregon Trails. | nearest_city= Brule, Nebraska | locmapin = Nebraska | built = {{Start date|1847}} | architect OR builder = | architecture = | added = July 15, 1974 | area = {{convert|140|acre}} | refnum = 74001126[1] }}California Hill is a hill in Nebraska, and the first major hill ascended by emigrants on the Oregon Trail.[2][3] East of O'Fallon's Bluffs, the trail begins to turn southward along the South Platte River. The migrants had to make a decision of where to cross the river and then over the divide between the north and south branches. The North Platte River was the preferred route towards Fort Laramie and Casper, Wyoming. A variety of crossings were used, but the most often chosen was named the California Crossing. Having travelled {{convert|53|miles|km}} west of O'Fallon's Bluffs this crossing was the most direct Ash Hollow and the North Platte River. While shallow, the South Plattes sandy bottom created a major obstacle for heavy wagons. Quicksand and moving water were the cause of wrecks, drownings, and deaths from exposure. This was accentuated as the main crossing season was in May and early June and the rivers became swollen from the spring melt in the mountains.[4] Once over, the emigrants faced California Hill. This climb of {{convert|240|ft|m}} was over a {{convert|1.5|km|}} before reaching the plateau that stretched between the two forks of the Platte rivers. While not as steep as the hills ahead of them on the trail, this was the first major hill that they faced.[4] Current StatusThe South Platte River has changed since the era of the wagon trains due to the growth of brush, and other vegetation, and changed created by the division of water for irrigation of the fields along the valley. Trail ruts are visible for almost {{convert|0.75|miles|km}} to the southeast reaching U.S. Highway 30 and for {{convert|0.5|miles|km}} to the northwest disappearing into the cultivated field on the plateau. The ruts leading up from U.S. 30 are gentle swales covered by plants. To the northwest, the ruts appear as cuts in the hillside.[4] {{Commons category|California Hill (Keith County, Nebraska)}}References1. ^{{NRISref|version=2010a}} 2. ^{{cite web |url=http://www.nps.gov/oreg/planyourvisit/site5.htm |title=California Hill - Oregon National Historic Trail (U.S. National Park Service) |newspaper=Nps.gov |date= |author= |accessdate= July 15, 2015}} 3. ^{{cite web |url=http://ww2.valdosta.edu/~dlscott/Nebraska.html |title=The Oregon Trail in Nebraska |newspaper=Ww2.valdosta.edu |date= |author= |accessdate= July 15, 2015}} 4. ^1 2 Comprehensive Management and Use Plan, Oregon National Historic Trail, Appendix III, Selected Historic Sites and Cross-Country Segments, Status and Recommendations; Oregon Trail, National Historic Trail / MO – KS – NB – WY – ID – WA – OR; National Park Service, United States Department of the Interior; Washington, D.C.; August 1981, pg 86-7 2 : Oregon Trail|California Trail |
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