Sandom Branch

{{short description|Stream in Delaware, USA}}

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

{{Infobox river

| name = Sandom Branch

| name_native =

| name_native_lang =

| name_other = Tributary to Blackbird Creek

| name_etymology =

| image = Floodplain of Sandom Branch downstream of DE 1.jpg

| image_caption = Floodplain of Sandom Branch downstream of DE 1 in 2008

| map =

| map_size = 180

| map_caption =

| pushpin_map = USA Delaware#USA

| pushpin_map_size = 180

| pushpin_map_caption= Location of Sandom Branch 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|2.33|mi|km|abbr=on}}{{cite web |title=Sandom Branch Watershed Report |url=https://watersgeo.epa.gov/watershedreport/?comid=4653426 |website=Waters Geoviewer |publisher=US EPA |accessdate=31 July 2019}}

| width_min =

| width_avg =

| width_max =

| depth_min =

| depth_avg =

| depth_max =

| discharge1_location= Blackbird Creek

| discharge1_min =

| discharge1_avg = {{convert|3.28|cuft/s|m3/s|abbr=on}} at mouth with Blackbird Creek{{cite web |title=Sandom Branch Watershed Report |url=https://watersgeo.epa.gov/watershedreport/?comid=4653426 |website=Waters Geoviewer |publisher=US EPA |accessdate=31 July 2019}}

| discharge1_max =

| source1 = divide between Sandom Branch and Duck Creek

| source1_location = about 2 miles south of Blackbird, Delaware{{cite web |title=Sandom Branch Topo Map, New Castle County DE (Clayton Area) |url=https://www.topozone.com/delaware/new-castle-de/stream/sandom-branch/ |website=TopoZone |publisher=Locality, LLC |accessdate=31 July 2019 |language=en}}

| source1_coordinates= {{coord|39|20|37|N|075|40|22|W|display=inline}}{{cite web |title=GNIS Detail - Sandom Branch |url=https://geonames.usgs.gov/apex/f?p=138:3:0::NO:3:P3_FID,P3_TITLE:214607,Sandom%20Branch |website=geonames.usgs.gov |publisher=US Geological Survey |accessdate=31 July 2019}}

| source1_elevation = {{convert|50|ft|abbr=on}}

| mouth = Blackbird Creek

| mouth_location = Blackbird, Delaware

| mouth_coordinates = {{coord|39|22|27|N|075|39|10|W|display=inline,title}}

| mouth_elevation = {{convert|0|ft|abbr=on}}

| progression = Blackbird Creek → Delaware Bay → Atlantic Ocean

| river_system = Blackbird Creek

| basin_size = {{convert|2.78|sqmi}}

| basin_population =

| tributaries_left = unnamed tributaries

| tributaries_right = unnamed tributaries

| custom_label =

| custom_data =

| extra =

}}

Sandom Branch is a {{convert|2.33|mi|km|abbr=on}} long tributary to Blackbird Creek in New Castle County, Delaware. Sandom Branch is one of the major tributaries to Blackbird Creek above tidal influence.