| Sewell Branch | |
| Name Other: | Tributary to Andover Branch |
| Image Alt: | Image of Sewell Branch |
| Map Size: | 300 |
| Map Alt: | Map of Sewell Branch mouth |
| Pushpin Map: | Maryland#USA |
| Pushpin Map Size: | 300 |
| Pushpin Map Alt: | Location of Sewell Branch mouth |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Maryland Delaware |
| Subdivision Type3: | County |
| Subdivision Name3: | Kent (MD) Queen Annes (MD) Kent (DE) |
| Length: | 7.93miles[1] |
| Discharge1 Avg: | 21.27cuft/s at mouth with Sewell Branch[2] |
| Source1: | Pinks Branch divide |
| Source1 Location: | Underwood Corner, Delaware |
| Source1 Coordinates: | 39.2411°N -75.6808°W[3] |
| Source1 Elevation: | 70feet[4] |
| Mouth: | Andover Branch |
| Mouth Location: | about 1 mile southeast of Peacock Corners, Maryland |
| Mouth Coordinates: | 39.2417°N -75.7953°W |
| Mouth Elevation: | 20feet |
| Progression: | generally west |
| River System: | Chester River |
| Tributaries Left: | Jordan Branch Blanco Ditch |
| Tributaries Right: | unnamed tributaries |
| Bridges: | DE 42, Sudlers Row, Blackiston Church Road, Sewell Branch Road |
Sewell Branch is a 7.93miles long 3rd order tributary to Andover Branch in Kent and Queen Annes Counties, Maryland. In Maryland, Sewell Branch forms the boundary in part of Kent and Queen Annes Counties.
According to the Geographic Names Information System, it has also been known historically as:[3]
Sewell Branch rises on the Pinks Branch divide at Underwood Corner, Delaware.[4] Sewell Branch then flows westerly into Maryland to meet Andover Branch about 1 mile southeast of Peacock Corners, Maryland.
Sewell Branch drains of area, receives about 44.7 in/year of precipitation, has a topographic wetness index of 673.20 and is about 6.8% forested.[2]