| 词条 | Logan Run |
| 释义 |
| name = Logan Run | image = Logan Run.JPG | image_caption = Logan Run looking downstream | source1_location = Shamokin Hill near in Rush Township, Northumberland County, Pennsylvania | mouth_location = Susquehanna River in Rush Township, Northumberland County, Pennsylvania | mouth_coordinates = {{coord|40.9389|-76.5932|region:US-PA|format=dms|display=inline,title}} | progression = Susquehanna River → Chesapeake Bay | length = {{convert|5.7|mi|km|abbr=on}} | source1_elevation = {{convert|960|to|980|ft|m}} | mouth_elevation = {{convert|440|ft|m|abbr=on}} | basin_size = {{convert|8.70|sqmi|km2|abbr=on}} }} Logan Run (also known as Logan's Run[1]) is a tributary of the Susquehanna River in Northumberland County, Pennsylvania, in the United States. It is approximately {{convert|5.7|mi|km}} long and flows through Rush Township.[1] The watershed of the stream has an area of {{convert|8.70|sqmi|km2}} and is in the Lower Susquehanna River drainage basin. The stream is crossed by five bridges and was home to a gristmill and sawmill at some point in the past. It is considered to be a coldwater fishery and a migratory fishery. Rock of the Catskill Formation, the Pocono Formation, and the Hamilton Formation are present in the watershed. CourseLogan Run begins on Shamokin Hill, near the southern border of Rush Township. It flows west in a valley for a short distance before turning north for a few tenths of a mile. The stream then turns northwest for some distance and its valley becomes broader and deeper. It then turns roughly north for a few miles, receiving four unnamed tributaries. At this point, the stream crosses State Route 2004 and turns northwest for a short distance. Its valley broadens further. The stream then turns north and receives an unnamed tributary before turning northeast and receiving another unnamed tributary. It then turns north and receives two more unnamed tributaries before turning north-northeast for a several tenths of a mile. At this point, the stream crosses Pennsylvania Route 54 and flows north for several tenths of a mile before reaching its confluence with the Susquehanna River.[1] Logan Run joins the Susquehanna River {{convert|138.96|mi|km}} upstream of its mouth.[2] Hydrology, geography, and geologyThe elevation near the mouth of Logan Run is {{convert|440|ft|m}} above sea level.[3] The elevation of the stream's source is between {{convert|960|ft|m}} and {{convert|980|ft|m}} above sea level.[1] There are beds of rock containing rounded boulders on Logan Run at an elevation of {{convert|725|ft|m}} above sea level. Angular pieces of several rock formations occur at this area. These include sandstone of the Hamilton Formation, the Pocono Formation, and conglomerate of the Catskill Formation. Some of these pieces have diameters of more than {{convert|2|ft|m}}. No glacial action has occurred in the area.[4] Sandstone of the Catskill Formation has been found in the hills in the vicinity of Logan Run.[4] Logan Run enters the Susquehanna River on the river's left bank.[5] Nutrients containing nitrogen have been observed in Logan Run.[6] WatershedThe watershed of Logan Run has an area of {{convert|8.70|sqmi|km2}}.[2] The stream is in the United States Geological Survey quadrangle of Danville.[3] It is one of the main streams in Rush Township.[7] The stream is in the Lower Susquehanna River drainage basin. The Hydrologic Unit Code of the stream is 020501071003.[6] HistoryA gristmill and sawmill was constructed on Logan Run by Daniel Montgomery. The mill was operated by John Gilliam at some point in the past.[7] A total of five bridges more than {{convert|20|ft|m}} long cross Logan Run, four of which were built in the 1930s and three of which were built in 1934 and 1935.[8] A concrete tee beam bridge was built over the creek in 1930 and is {{convert|24.0|ft|m}} long. A concrete slab bridge and a steel stringer bridge were built over the stream in 1934. They are {{convert|21.0|ft|m}} long and {{convert|32.2|ft|m}} long, respectively. Another bridge was built over it in 1935. It is a concrete tee beam bridge that is {{convert|44.0|ft|m}} long. A prestressed box beam bridge was also built over the stream in 1985. It is {{convert|49.9|ft|m}} long and carries Pennsylvania Route 54.[8] BiologyLogan Run is considered to be a coldwater fishery and a migratory fishery.[9] It is inhabited by fish of the family Salmonidae and other coldwater fish.[10] See also
References1. ^1 2 {{Citation|author=United States Geological Survey |url=http://viewer.nationalmap.gov/viewer/ |title=The National Map Viewer |accessdate=October 23, 2014 |deadurl=yes |archiveurl=https://www.webcitation.org/66gupqQDM?url=http://viewer.nationalmap.gov/viewer/ |archivedate=April 5, 2012 |df= }} 2. ^1 {{Citation|url = http://www.lycoming.edu/cwi/pdfs/paGazetterOfStreams.pdf|title = Pennsylvania Gazetteer of Streams|date = November 2, 2001|accessdate = October 23, 2014}} 3. ^1 {{Citation|url = http://www.topozone.com/states/Pennsylvania.asp?county=Northumberland&feature=Stream|title = Topographic Map Stream Features in Northumberland County, Pennsylvania|accessdate = October 23, 2014}} 4. ^1 {{Citation|author = Geological Survey of Pennsylvania|url = https://books.google.com/books?id=sEdJAAAAYAAJ&pg=PR15&lpg=PR15&dq=%22Logan+Run%22+northumberland+county+pa|title = Report of Progress|pages = xiv, xv, 353, 353|year = 1883}} 5. ^{{Citation|author = US Army Corps of Engineers|url = http://www.hec.usace.army.mil/publications/ProjectReports/PR-56.pdf|title = Susquehanna River Flood Warning and Response System|date = July 2003|accessdate = October 23, 2014}} 6. ^1 {{Citation|author = Pennsylvania Department of Environmental Protection|url = http://files.dep.state.pa.us/Water/Watershed%20Management/WatershedPortalFiles/CCD%20Niche/CBP/2013_Funding/FY13-14Priority_Ag_Watersheds_TN_TP.pdf|title = FY13-14Priority_Ag_Watersheds_TN_TP|accessdate = October 23, 2014}} 7. ^1 2 {{Citation|author = Herbert Charles Bell, J. J. John|url = https://books.google.com/books?id=z9MwAQAAMAAJ&pg=PA19|title = History of Northumberland County, Pennsylvania|pages = 19, 741|year = 1891}} 8. ^1 {{Citation|url = http://uglybridges.com/pa/northumberland/|title = Northumberland County|accessdate = October 23, 2014}} 9. ^{{Citation|publisher = Pennsylvania Code|url = http://www.pacode.com/secure/data/025/chapter93/s93.9k.html|title = § 93.9k. Drainage List K. Susquehanna River Basin in Pennsylvania|accessdate = October 23, 2014}} 10. ^{{Citation|url=http://www.columbiaccd.org/s93.9k-modified-original.pdf |title=Chapter § 93.9k. Stream Classification list |accessdate=October 23, 2014 |deadurl=yes |archiveurl=https://web.archive.org/web/20150118195306/http://www.columbiaccd.org/s93.9k-modified-original.pdf |archivedate=January 18, 2015 |df= }} 3 : Rivers of Northumberland County, Pennsylvania|Tributaries of the Susquehanna River|Rivers of Pennsylvania |
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