Raystown Branch Juniata River

{{Use American English|date=February 2025}}

{{Infobox river

| name = Raystown Branch Juniata River

| name_native =

| name_native_lang =

| name_other = Tributary to Juniata River

| name_etymology =

| image = USACE Raystown Lake Dam.jpg

| image_caption = Raystown Lake Dam on the Raystown Branch Juniata River

| map =

| map_size = 300

| map_caption =

| pushpin_map = USA Pennsylvania

| pushpin_map_size = 300

| pushpin_map_caption= Location of the mouth of Raystown Branch Juniata River

| subdivision_type1 = Country

| subdivision_name1 = United States

| subdivision_type2 = State

| subdivision_name2 = Pennsylvania

| subdivision_type3 = Counties

| subdivision_name3 = Huntingdon County
Bedford County

| subdivision_type4 =

| subdivision_name4 =

| subdivision_type5 =

| subdivision_name5 =

| length = {{convert|62.14|mi|km|abbr=on}}{{cite web |title=ArcGIS Web Application |url=https://epa.maps.arcgis.com/apps/webappviewer/index.html?id=ada349b90c26496ea52aab66a092593b |website=epa.maps.arcgis.com |publisher=US EPA |access-date=19 July 2019}}

| width_min =

| width_avg =

| width_max =

| depth_min =

| depth_avg =

| depth_max =

| discharge1_location= Ardenheim, Pennsylvania

| discharge1_min =

| discharge1_avg = {{convert|1233.99|cuft/s|m3/s|abbr=on}} at mouth with Juniata River{{cite web |title=Raystown Branch Juniata River Watershed Report |url=https://watersgeo.epa.gov/watershedreport/?comid=4693127 |website=Waters Geoviewer |publisher=US EPA |access-date=19 July 2019}}

| discharge1_max =

| source1 = divide between Raystown Branch and Wills Creek

| source1_location = about 1 mile east of Macdonaldton, Pennsylvania

| source1_coordinates= {{coord|39|54|57|N|078|53|00|W|display=inline}}{{cite web |title=GNIS Detail - Raystown Branch Juniata River |url=https://geonames.usgs.gov/apex/f?p=138:3:0::NO:3:P3_FID,P3_TITLE:1193174,Raystown%20Branch%20Juniata%20River |website=geonames.usgs.gov |publisher=US Geological Survey |access-date=19 July 2019}}

| source1_elevation = {{convert|2720|ft|abbr=on}}

| mouth = Juniata River

| mouth_location = Ardenheim, Pennsylvania

| mouth_coordinates = {{coord|40|27|17|N|077|58|39|W|display=inline,title}}{{cite web |title=GNIS Detail - Raystown Branch Juniata River |url=https://geonames.usgs.gov/apex/f?p=138:3:0::NO:3:P3_FID,P3_TITLE:1193174,Raystown%20Branch%20Juniata%20River |website=geonames.usgs.gov |publisher=US Geological Survey |access-date=19 July 2019}}

| mouth_elevation = {{convert|600|ft|abbr=on}}

| progression = generally north

| river_system = Juniata River

| basin_size = {{convert|961.96|sqmi}}

| basin_population =

| tributaries_left = Breastwork Run
Shawnee Branch
Dunning Creek
Pipers Run
Yellow Creek
Dry Run
Ravers Run
Sugar Camp Run
Shy Beaver Creek
Coffee Run
James Creek
Hawns Run

| tributaries_right = Wambaugh Run
Cove Creek
Brush Creek
Tub Mill Run
French Run
Kimber Run
Six Mile Run
Shoup Run
Tatman Run
Great Trough Creek

| waterbodies = Raystown Lake

| custom_label =

| custom_data =

| extra =

}}

The Raystown Branch Juniata River is the largest and longest tributary of the Juniata River in south-central Pennsylvania in the United States.Gertler, Edward. Keystone Canoeing, Seneca Press, 2004. {{ISBN|0-9749692-0-6}}

The Raystown Branch Juniata River begins along the Allegheny Front in Somerset County and flows {{convert|123|mi}} to the confluence with the Juniata River near Huntingdon.U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. [http://viewer.nationalmap.gov/viewer/ The National Map], accessed August 8, 2011 It passes through the boroughs of Bedford and Everett along its course.

Approximately {{convert|5.4|mi}} upstream of the mouth, the United States Army Corps of Engineers Raystown Dam forms Raystown Lake, the largest lake in Pennsylvania.