| Tubmill Branch | |
| Name Other: | Tributary to Mispillion River |
| Map Size: | 200 |
| Pushpin Map: | USA Delaware#USA |
| Pushpin Map Size: | 200 |
| Pushpin Map Caption: | Location of Tubmill Branch mouth |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Delaware |
| Subdivision Type3: | County |
| Subdivision Name3: | Kent |
| Length: | 2.16miles[1] |
| Discharge1 Location: | Swan Creek via Tubmill Branch |
| Discharge1 Avg: | 4.2cuft/s at mouth with Swan Creek[2] |
| Source1: | Lednum Branch divide |
| Source1 Location: | Hall Estates, Delaware |
| Source1 Coordinates: | 38.9433°N -75.4636°W[3] |
| Source1 Elevation: | 44feet[4] |
| Mouth: | Swan Creek at Tubmill Pond |
| Mouth Location: | about 0.5 miles south of Lynch Heights, Delaware |
| Mouth Coordinates: | 38.9431°N -75.4306°W |
| Mouth Elevation: | 10feet |
| Progression: | northeast then southeast |
| River System: | Mispillion River |
| Tributaries Left: | unnamed tributaries |
| Tributaries Right: | Improvement Branch |
| Bridges: | DE 15, Bowman Road, Church Hill Road |
Tubmill Branch is a 2.16miles long 2nd order tributary to the Swan Creek in Kent County, Delaware. This stream is one of two that are named Tubmill Branch in the United States. The other is in Caroline County, Maryland.
Tubmill Branch rises on the Lednum Branch divide about 0.5 miles south of Lynch Heights, Delaware. Tubmill Branch then flows northeast then southeast to meet Swan Creek at Hall Estates, Delaware.[4]
Tubmill Branch drains of area, receives about 45.7 in/year of precipitation, has a topographic wetness index of 552.59 and is about 8.3% forested.[2]