The River Witham, from source to sea
Great Britain 1:50 000 Scale Colour Raster Mapping Extracts © Crown copyright Ordnance Survey. All Rights Reserved. Educational licence 100045616.
Contents
- A pictorial description of the River Witham's indirect route from its source:
- to the sea:
- The first few miles, flowing east to the sea
- The bend north, and up to Grantham and the Vale of Belvoir
- The bend west, into the Vale of Belvoir
- A bend north again, through the Vale of Belvoir to Lincoln
- The bend east, through the Lincoln Gap, and into the Fens
- The final bend south-east to Boston
- Boston
- The Haven, to the sea
- Selected References
A pictorial description of the River Witham's indirect route from its source:
[map SK8818]to the sea:
[map TF3939]
The River Witham is about 86 miles long. After a first mile in Leicestershire, it runs entirely through Lincolnshire (not counting where it forms the Lincolnshire-Nottinghamshire border). According to Link

The first few miles, flowing east to the sea
Starting at its source:
[map SK 8842 1836]
This boggy ground on the low elevation watershed between Wymondham and South Witham is marked, on large scale OS maps, as 'Issues'; which I presume refers to springs. I regard this as the source of the Witham
The first mile is in Leicestershire



The river then crosses the Leicestershire-Lincolnshire border beneath Fosse Lane (aka 'The Drift', also see 'Sewstern Lane')
[map SK 9003 1893]
The Leicestershire-Lincolnshire border on Fosse Lane. The River Witham passes under the road where the concrete posts are
emerging in Lincolnshire (where it will remain), and continuing its easterly course through South Witham




The bend north, and up to Grantham and the Vale of Belvoir
On the east side of South Witham the river encounters a low, north-south ridge carrying 'Ermine Street' (aka the A1, Great North Road), and the river alters course by bending to the north
[map SK 9293 1967]
The river now runs through the villages of North Witham, Colsterworth, and Great and Little Ponton. Its course is due north, being confined by low ridges of Jurassic rocks; especially, to the east, by the ridge of Lincolnshire Limestone carrying the Roman road Ermine Street.

The first water level gauging station, contributing to flood management decisions far downstream. Water level records and the current status may be found at Link



















and enters its first town, Grantham









then continues north past Belton Park on the way to Barkston and the Vale of Belvoir









Great Britain 1:50 000 Scale Colour Raster Mapping Extracts © Crown copyright Ordnance Survey. All Rights Reserved. Educational licence 100045616.
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