Muddy Run (Christina River tributary)

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

{{Infobox river

| name = Muddy Run

| name_native =

| name_native_lang =

| name_other = Tributary to Christina River

| name_etymology =

| nickname =

| image = Muddy Run.jpg

| image_size =

| image_caption = Muddy Run south of Reybold Road

| image_alt = Image of Muddy Run

| map =

| map_size = 180

| map_caption =

| map_alt = Map of Muddy Run mouth

| pushpin_map = Delaware#USA

| pushpin_map_size = 180

| pushpin_map_caption=

| pushpin_map_alt = Location of Muddy Run mouth

| subdivision_type1 = Country

| subdivision_name1 = United States

| subdivision_type2 = State

| subdivision_name2 = Delaware

| subdivision_type3 = County

| subdivision_name3 = New Castle

| subdivision_type4 =

| subdivision_name4 =

| subdivision_type5 =

| subdivision_name5 =

| length = {{convert|6.61|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 |accessdate=14 March 2020}}

| width_min =

| width_avg =

| width_max =

| depth_min =

| depth_avg =

| depth_max =

| discharge1_location= Christina River

| discharge1_min =

| discharge1_avg = {{convert|7.92|cuft/s|m3/s|abbr=on}} at mouth with Christina River{{cite web |title=Muddy Run Watershed Report |url=https://watersgeo.epa.gov/watershedreport/?comid=4651472 |website=Waters Geoviewer |publisher=US EPA |accessdate=14 March 2020}}

| discharge1_max =

| source1 = Persimmon Run divide

| source1_location = Pond at Summit View, Delaware

| source1_coordinates= {{coord|39|38|30|N|075|46|16|W|display=inline}}{{cite web |title=GNIS Detail - Muddy Run |url=https://geonames.usgs.gov/apex/f?p=138:3:0::NO:3:P3_FID,P3_TITLE:214359,Muddy%20Run |website=geonames.usgs.gov |publisher=US Geological Survey |accessdate=14 March 2020}}

| source1_elevation = {{convert|155|ft|abbr=on}}{{cite web |title=Muddy Run Topo Map, New Castle County DE (Newark East Area) |url=https://www.topozone.com/delaware/new-castle-de/stream/muddy-run/ |website=TopoZone |publisher=Locality, LLC |accessdate=14 March 2020 |language=en}}

| mouth = Christina River

| mouth_location = Heather Woods, Delaware

| mouth_coordinates = {{coord|39|37|54|N|075|41|51|W|display=inline}}

| mouth_elevation = {{convert|18|ft|abbr=on}}

| progression = south then northeast

| river_system = Christina River

| basin_size = {{convert|14.95|sqmi}}

| basin_landmarks =

| basin_population =

| tributaries_left = unnamed tributaries

| tributaries_right = Belltown Run

| waterbodies = Sunset Lake

| waterfalls =

| bridges = I-95, Welsh Tract Road, Smith Way, Old Baltimore Pike, Bartley Drive, Pencader Drive, Glasgow Avenue, DE 896, GBC Drive, DE 72, Salem Church Road

| ports =

| custom_label =

| custom_data =

| extra =

}}

Muddy Run is a {{convert|6.61|mi|km|adj=mid|-long}} stream in northern New Castle County, Delaware in the United States.