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The products of chalk weathering are dissolved in rainwater and are transported in stream flow. Chalk streams transport little suspended material (unlike most rivers), but are considered "mineral-rich" due to the dissolved calcium and carbonate ions. The surface water of chalk streams is commonly described as "gin clear".
A wide variety of river and stream channel types exist in limnology, the study of inland waters.All these can be divided into two groups by using the water-flow gradient as either low gradient channels for streams or rivers with less than two percent (2%) flow gradient, or high gradient channels for those with greater than a 2% gradient.
The River Chess is a chalk stream that rises near Chesham in the Chiltern Hills, and flows for 11 miles (18 km) through Buckinghamshire and Hertfordshire to its confluence with the River Colne in Rickmansworth. The Chess, along with the Colne and Gade, gives rise to the name of the district of Three Rivers.
The word bourne derives from the Anglo-Saxon word for a stream. [1] It is an unnavigable tributary of the River Gade, which flows into the River Colne, which in turn is a tributary of the River Thames. The Bulbourne is an example of a chalk stream, which is a watercourse that flows from chalk-fed groundwater. Chalk streams are a very rare ...
The river rises at Mead End near Bowerchalke and flows 1.2 miles north through the Chalke Valley to join the Ebble at Mount Sorrel, just upstream of Broad Chalke. It provides a steady, year-round flow of water; above the junction the Ebble is a winterbourne. A typical chalk stream, the Chalke is noted for its brown trout and fish farms.
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The Nailbourne near Bishopsbourne on 22 July 2006. Even when there is no water in the stream it is still a haven for wildlife. The Little Stour starts at the springs near Well Chapel, Bekesbourne, after the watercress beds the Nailbourne joins the Little Stour (when it is running) and then joins with the Great Stour at Plucks Gutter near West Stourmouth.
Starting at Elmswell as a spring from a chalk aquifer, [4] it follows a course which takes it past Little Driffield, around the southern edge of Driffield, through Wansford, past Corpslanding, and joins the Driffield Navigation at Emmotland. In the upper reaches it is known as Elmswell Beck, then Driffield Beck and finally West Beck. [5]