| Cow Bridge Branch | |
| Name Other: | Tributary to Indian River |
| Map Size: | 180 |
| Pushpin Map: | USA Delaware#USA |
| Pushpin Map Size: | 180 |
| Pushpin Map Caption: | Location of Cow Bridge Branch mouth |
| Pushpin Map Alt: | Map of Cow Bridge Branch mouth location |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Delaware |
| Subdivision Type3: | County |
| Subdivision Name3: | Sussex |
| Length: | 3.98miles[1] |
| Discharge1 Location: | Millsboro Pond |
| Discharge1 Avg: | 42.07cuft/s at mouth into Millsboro Pond[2] |
| Source1: | Outlet of Morris Millpond |
| Source1 Location: | Morris Mill, Delaware |
| Source1 Coordinates: | 38.6396°N -75.316°W[3] |
| Source1 Elevation: | 12feet |
| Mouth: | Millsboro Pond |
| Mouth Location: | Millsboro, Delaware |
| Mouth Coordinates: | 38.6059°N -75.2982°W |
| Mouth Elevation: | 3feet |
| Progression: | Millsboro Pond → Indian River → Indian River Bay → Atlantic Ocean |
| River System: | Indian River |
| Tributaries Left: | Deep Branch |
| Tributaries Right: | Gills Branch Stockley Branch Mirey Branch |
| Bridges: | Zoar Road |
Cow Bridge Branch is a 3.98miles long third-order tributary to Millsboro Pond in Sussex County, Delaware. This is the only stream of this name in the United States.[3]
According to the Geographic Names Information System, it has also been known historically as:[3]
Cow Bridge Branch begins at the outlet of Morris Millpond at Morris Mill, Delaware, where Deep Branch and Gills Branch join. Cow Bridge Branch then flows south-southeast to Millsboro Pond.[3]
Cow Bridge Branch drains of area, receives about 45.1 in/year of precipitation, and is about 23.07% forested.[2]