St. Jones River
|St. Jones River|
Tributary to Delaware Bay
The St. Jones River in Dover in 2006
|⁃ elevation||13 ft (4.0 m) |
Latitude and Longitude:
|0 ft (0 m) |
|Length||13 mi (21 km) |
|Basin size||36 sq mi (93 km2) |
|⁃ location||Bowers Beach, Delaware|
|⁃ average||107.65 cu ft/s (3.048 m3/s) at mouth with Delaware Bay |
|River system||Delaware Bay|
|⁃ right||Puncheon Run|
Beaver Gut Ditch
|Bridges||E Division Street, E Lookerman Street, Martin Luther King, jr. Blvd., US 13, Puncheon Run Connector, E Lebanon Road, DE 1|
The St. Jones River is a river flowing to Delaware Bay in central Delaware in the United States. It is 12.8 miles (20.6 km) long  and drains an area of 36 square miles (93 km2) on the Atlantic Coastal Plain. The river is believed to have been named either for Robert Jones, an early European property owner in the region, or for "St. Jone", the Welsh spelling of St. John. 
The St. Jones River flows for its entire length in east-central Kent County. According to the Geographic Names Information System, the river begins at the dam of Silver Lake in the city of Dover;  Silver Lake is fed by Fork Branch,  Penrose Branch,  and Maidstone Branch.  From Silver Lake, the St. Jones River flows generally southeastwardly, along the east side of downtown Dover and past Legislative Hall, the Capital Square/Legislative Mall, and the Dover Air Force Base to Bowers, where it flows into Delaware Bay, approximately 0.5 miles (0.8 km) north of the mouth of the Murderkill River. 
The lower course of the river southeast of Dover is surrounded by brackish marshes and salt marshes, open water habitats, and wetlands. A portion of the lower river, along with nearby Blackbird Creek, have received federal protection as the Delaware National Estuarine Research Reserve, part of the National Estuarine Research Reserve system. 
The United States Board on Geographic Names settled on "St. Jones River" as the stream's name in 1894. According to the Geographic Names Information System, it has also been known historically as: 
- Jones Creek
- Joness Creek
- Saint Jones Creek
- Warge Kijhlen
- Wulfs Creek
- U.S. Geological Survey Geographic Names Information System: Saint Jones River
- U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map Archived 2012-03-29 at the Wayback Machine, accessed April 1, 2011
- "St. Jones River Watershed Report". Waters Geoviewer. US EPA. Retrieved 19 October 2019.
- United States Environmental Protection Agency (2006-12-14). "Total Maximum Daily Loads (TMDLs) for Bacteria and Nutrient Impairments on the St. Jones River Watershed, Delaware". Retrieved 2007-01-30.
- U.S. Geological Survey Geographic Names Information System: Fork Branch
- U.S. Geological Survey Geographic Names Information System: Penrose Branch
- U.S. Geological Survey Geographic Names Information System: Maidstone Branch
- DeLorme (2004). Maryland Delaware Atlas & Gazetteer. p.52, p.62. Yarmouth, Maine: DeLorme. ISBN 0-89933-279-X.
- National Estuarine Research Reserve System (December 2006). "Delaware National Estuarine Research Reserve". Retrieved 2007-01-30.