| 词条 | Derr Run |
| 释义 |
| name = Derr Run | image = Derr_Run_looking_upstream.jpg | image_caption = Derr Run looking upstream | source1_location = small pond on a hill in Penn Township, Lycoming County, Pennsylvania | mouth_location = Little Muncy Creek in Franklin Township, Lycoming County, Pennsylvania near Lairdsville | mouth_coordinates = {{coord|41.2203|-76.6239|region:US-PA|format=dms|display=inline,title}} | progression = Little Muncy Creek → Muncy Creek → West Branch Susquehanna River → Susquehanna River → Chesapeake Bay | length = {{convert|2.9|mi|km|abbr=on}} | source1_elevation = {{convert|1212|ft|m|abbr=on}} | mouth_elevation = {{convert|702|ft|m|abbr=on}} }} Derr Run is a tributary of Little Muncy Creek in Lycoming County, Pennsylvania, in the United States. It is approximately {{convert|2.9|mi|km}} long and flows through Penn Township and Franklin Township.[1] The watershed of the stream has an area of {{convert|1.61|sqmi|km2}}. It is classified as a Coldwater Fishery and a Migratory Fishery. CourseDerr Run begins in a small pond on a hill in Penn Township. It flows south for several tenths of a mile and enters a valley before turning south-southeast. After several tenths of a mile, the stream turns south for a few tenths of a mile before turning south-southeast again and entering Penn Township. Several tenths of a mile further downstream, it turns southeast for several tenths of a mile. The stream then leaves its valley, crosses Pennsylvania Route 118, and turns southwest, flowing through the valley of Little Muncy Creek. After a few tenths of a mile, it reaches its confluence with Little Muncy Creek.[1] Derr Run joins Little Muncy Creek {{convert|13.09|mi|km}} upstream of its mouth.[2] Geography and geologyThe elevation near the mouth of Derr Run is {{convert|702|ft|m}} above sea level.[3] The elevation of the stream's source is {{convert|1212|ft|m}} above sea level.[1] There is a spring in the watershed of Derr Run.[4] Watershed and biologyThe watershed of Derr Run has an area of {{convert|1.61|sqmi|km2}}.[2] The mouth of the stream is in the United States Geological Survey quadrangle of Lairdsville. However, its source is in the quadrangle of Picture Rocks.[3] The mouth of the stream is located within {{convert|1|mi|km}} of Lairdsville.[3] In 2014, Waste Management of Pennsylvania, Inc. was issued an Erosion and Sediment Control Permit for which the receiving waterbody is Derr Run.[5] In 2007, the US Gypsum Company was issued a permit to build, maintain, and operate a {{convert|17|mi|km|adj=on}} long natural gas pipeline crossing the stream in two places, as well as crossing other streams. However, one of the crossings of Derr Run was planned to involve no impact to the stream; the other was planned to impact {{convert|525|sqft|m2}}.[4] Derr Run is classified as a Coldwater Fishery and a Migratory Fishery, as are all of the other named tributaries of Little Muncy Creek.[5][6] HistoryDerr Run was entered into the Geographic Names Information System on August 2, 1979. Its identifier in the Geographic Names Information System is 1192351.[3] See also
References1. ^1 2 {{citation |author=United States Geological Survey |url=http://viewer.nationalmap.gov/viewer/ |title=The National Map Viewer |accessdate=March 20, 2016 |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|page = 55|date = November 2, 2001|accessdate = March 20, 2016}} 3. ^1 2 3 {{citation|author = Geographic Names Information System|url = http://gnis.usgs.gov/apex/f?p=136:3:0::NO::P3_FID,P3_TITLE:1192351,Derr%20Run|title = Feature Detail Report for: Derr Run|accessdate = March 20, 2016}} 4. ^1 {{citation|work = Pennsylvania Bulletin|url = http://www.pabulletin.com/secure/data/vol37/37-33/1482d.html|title = WATER OBSTRUCTIONS AND ENCROACHMENTS|date = August 18, 2007|accessdate = March 25, 2016}} 5. ^1 {{citation|work = Pennsylvania Bulletin|url = http://www.pabulletin.com/secure/data/vol44/44-36/1878c.html|title = EROSION AND SEDIMENT CONTROL|date = September 6, 2014|accessdate = March 21, 2016}} 6. ^{{citation|author = Lycoming College Clean Water Institute|publisher = Lycoming College|url = https://www.lycoming.edu/cwi/pdfs/muncyCreek/muncyreport2003.pdf|title = Summary Report-Muncy Creek|page = 4|date = Fall 2003|accessdate = March 25, 2016}} 3 : Rivers of Lycoming County, Pennsylvania|Tributaries of Muncy Creek|Rivers of Pennsylvania |
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