According to the terms of the agreement the boundary was to run along the Thames estuary to the mouth of the Lea (a few miles east of London), then up the Lea to its source near Leighton Buzzard, then due north to Bedford, then eastwards up the Ouse to Watling Street somewhere near Fenny or Stony Stratford.
The central and southern districts are drained by the Derwent from Lake St Clair - its tributaries being the Nive, Dee, Clyde, Ouse and Jordan.
The course is carefully buoyed and lighted, for the Humber is an important highway of commerce, having on the Yorkshire bank the great port of Hull, and on the Lincolnshire bank that of Grimsby, while Goole lies on the Ouse a little above the junction with the Trent.
Sides, the river Ouse being sufficient protection on the fourth side.
As Lynn (Lun, Lenne, Bishop's Lynn) owes its origin to the trade which its early settlers carried by the Ouse and its tributaries its history dates from the period of settled occupation by the Saxons.
The Little Ouse is navigable for barges down to the Great Ouse.
KING'S LYNN (LYNN or Lynn Regis), a market town, seaport and municipal and parliamentary borough of Norfolk, England, on the estuary of the Great Ouse near its outflow into the Wash.
Fine Norman and Early English work is seen at Dunstable and Elstow, and the later style is illustrated by the large cruciform churches at Leighton Buzzard and at Felmersham on the Ouse above Bedford.
The Trent runs north in the southern half of this plain, the Ouse runs south through the northern half, which is known as the Vale of York, lying low between the Pennine heights on the west and the Yorkshire moors on the east.
Warping is practised only in Lincolnshire and Yorkshire, on the estuary of the Humber, and in the neighbourhood of the rivers which flow into it - the Trent, the Ouse and the Don.