| Mill Branch | |
| Name Other: | Tributary to Tussocky Branch |
| Map Size: | 180 |
| Pushpin Map: | Delaware#USA |
| Pushpin Map Size: | 180 |
| Pushpin Map Caption: | Location of Mill Branch mouth |
| Pushpin Map Alt: | Map of Mill Branch mouth location |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Delaware |
| Subdivision Type3: | County |
| Subdivision Name3: | Sussex |
| Length: | 1.7miles[1] |
| Discharge1 Location: | Tussocky Branch |
| Discharge1 Avg: | 2.01cuft/s at mouth with Tussocky Branch[2] |
| Source1: | Tussocky Branch divide |
| Source1 Location: | Ralphs, Delaware[3] |
| Source1 Coordinates: | 38.5008°N -75.6444°W[4] |
| Source1 Elevation: | 48feet |
| Mouth: | Tussocky Branch |
| Mouth Location: | about 0.5 miles north of Ralphs, Delaware[5] |
| Mouth Coordinates: | 38.5206°N -75.6333°W |
| Mouth Elevation: | 33feet |
| Progression: | Tussocky Branch → Broad Creek → Nanticoke River → Chesapeake Bay → Atlantic Ocean |
| River System: | Nanticoke River |
| Tributaries Left: | unnamed tributaries |
| Tributaries Right: | unnamed tributaries |
| Bridges: | DE 24 |
Mill Branch is a 1.7miles long 1st order tributary to Tussocky Branch in Sussex County, Delaware.
Mill Branch rises in Ralphs, Delaware[3] and then flows northerly into Tussocky Branch about 0.5 miles north of Ralphs, Delaware.[5]
Mill Branch drains of area, receives about 44.6 in/year of precipitation, has a topographic wetness index of 816.27 and is about 20% forested.[2]