River Thet

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Thet
River Thet at Brettenham
Location of the river mouth within Norfolk
Etymology	From Thetford, in turn from 'Theodford' which is Anglo-Saxon for 'Peoples Ford'
Location
Country	England
Region	Norfolk
Physical characteristics
Source
• location	Deopham Green
• coordinates	52°33′03″N 1°00′07″E / 52.5507°N 1.0019°E / 52.5507; 1.0019
• elevation	53 m (174 ft)
Mouth	River Little Ouse
• location	Thetford
• coordinates	52°24′41″N 0°44′55″E / 52.4113°N 0.7485°E / 52.4113; 0.7485
• elevation	10 m (33 ft)
Length	34.3 km (21.3 mi)
Basin size	≈225km2
Basin features
River system	River Little Ouse
Tributaries
• left	Wittle Stream from Middle Harling Fen Stream from Old Buckenham Fen
• right	Stream from Roudham village Stream from Hockham

The River Thet is a river in Norfolk, England and is a tributary of the River Little Ouse.It rises in Breckland with sources in Deopham Green and Rockland All Saints^[1] and joins the Little Ouse in Thetford after flowing approximately southwest.

^[2] The primary sources for its various small tributaries include the calcareous valley fen SSSIs Swangey Fen,^[3] Old Buckenham Fen,^[4] Middle Harling Fen^[5] and Kenninghall and Banham Fens with Quidenham Mere.^[6]Carr woodland is also a prevalent habitat throughout the floodplain where open wetlands have been invaded by scrub. The underlying geology is clay/loam over chalk for the easternmost parts of the river's course and sand/gravel over chalk for the majority of the river.