status, which looks at the quantity and varieties of invertebrates, angiosperms and fish. Chemical status, which compares the concentrations of various chemicals against known safe concentrations, is rated good or fail. Water quality of the Hogsmill in 2019: Flooding In January 2014, the Hogsmill burst its banks on the edge of Bourne Hall in Ewell Village and near the B2200 London Road. This caused water to spill out into the nearby road and flood many of the buildings with basements in the centre of Ewell. On nearby Kingston Road, just downstream from Bourne Hall, the path was flooded. In popular culture Literature Richard Jefferies (1848–1887), best known for his nature-writing, wrote about the Hogsmill brook during his years living at Tolworth in two essays, "A Brook" and "A London Trout", that were collected in his book, Nature Near London, published by Chatto and Windus in 1883. Art The Hogsmill has appeared in the art of the Pre-Raphaelite painters, John Millais in his rendition of Ophelia, and William Holman Hunt who painted The Hireling Shepherd on the meadows by the Hogsmill, looking north towards Ewell Court Farm. The doorway (to the soul) in Hunt's The Light of the World is believed to be part of a gunpowder mill on the Hogsmill at Ewell. Local legend William the Conqueror is said to have "watered his horse" in the source waters near today's Spring Hotel. Traditionally this was at the pool in Bourne Hall Park. Industry Part of the course was engineered to be harnessed for watermills near Ewell Court. These joined those of nearby Whitton in the production of gunpowder; which continued for some time after the Napoleonic Wars to help supply the American Civil War. The mills closed in 1875 as they couldn't meet new safety legislation. Dynamos were later installed in one of the old mill buildings to generate electricity for Ewell Court House. There were also two flour mills in Ewell, the Upper and Lower mills, both also used for paper making at one time. The latter was supposed to have provided the flour for Queen Victoria's bakers. The Upper Mill was the last working corn mill on the river, still working in 1951 when visited by Jack Hillier. It is now the headquarters of the Samaritans. Another group of gunpowder mills were established at Worcester Park by William Taylor in 1720. They were variously known as the Malden