| Smithville Ditch | |
| Name Other: | Tributary to Tommy Wright Branch |
| Map Size: | 250 |
| Pushpin Map: | Maryland#USA |
| Pushpin Map Size: | 250 |
| Pushpin Map Caption: | Location of Smithville Ditch mouth |
| Pushpin Map Alt: | Map of Smithville Ditch mouth location |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Maryland |
| Subdivision Type3: | County |
| Subdivision Name3: | Caroline |
| Length: | 2.26miles[1] |
| Discharge1 Location: | Tommy Wright Branch |
| Discharge1 Avg: | 4.06cuft/s at mouth with Tommy Wright Branch[2] |
| Source1: | Short and Hall Ditch divide |
| Source1 Location: | about 5 miles southeast of Denton, Maryland |
| Source1 Coordinates: | 38.8206°N -75.7372°W[3] |
| Source1 Elevation: | 52feet |
| Mouth: | Tommy Wright Branch |
| Mouth Location: | about 1.5 miles west-northwest of Smithville, Maryland |
| Mouth Coordinates: | 38.7918°N -75.7391°W |
| Mouth Elevation: | 33feet |
| Progression: | Tommy Wright Branch → Marshyhope Creek → Nanticoke River → Chesapeake Bay → Atlantic Ocean |
| River System: | Nanticoke River |
| Tributaries Left: | unnamed tributaries |
| Tributaries Right: | unnamed tributaries |
| Bridges: | Melvin Road, Bullock Road, MD 404, Line Road |
Smithville Ditch is a 2.26miles long second-order tributary to Tommy Wright Branch in Caroline County, Maryland. This is the only stream of this name in the United States.[3]
Smithville Ditch rises about southeast of Denton, Maryland, and then flows generally south to join Tommy Wright Branch about west-southwest of Smithville, Maryland.[3]
Smithville Ditch drains of area, receives about 44.6 in/year of precipitation, and is about 12.11% forested.[2]