page_title: Keynsham
section_title: Geography
hierarchical_section_title: Keynsham / Geography
caption_attribution_description: English: The Lock Keeper at Keynsham
context_page_description: Keynsham is a town and civil parish located between Bristol and Bath in Somerset, England. It has a population of 16,000.
  It was listed in the Domesday Book as Cainesham, which is believed to mean the home of Saint Keyne.
  The site of the town has been occupied since prehistoric times, and may have been the site of the Roman settlement of Trajectus. The remains of at least two Roman villas have been excavated, and an additional 15 Roman buildings have been detected beneath the Keynsham Hams. Keynsham developed into a medieval market town after Keynsham Abbey was founded around 1170. It is situated at the confluence of the River Chew and River Avon and was subject to serious flooding before the creation of Chew Valley Lake and river level controls at Keynsham Lock in 1727. The Chew Stoke flood of 1968 inundated large parts of the town. It was home to the Cadbury's chocolate factory, Somerdale, which opened in 1935 as a major employer in the town.
  It is home to Memorial Park, which is used for the annual town festival and several nature reserves.
context_section_description: Keynsham is located where the River Chew meets the River Avon. Fishing rights for the Millground and Chewton sections of the Chew are owned by Keynsham Angling Club. The Mill Ground stretch of the River Chew consists of the six fields on the western bank from Chewton Place at Chewton Keynsham to the Albert Mill. The water is home to chub, roach, European perch and rudd, along with good numbers of gudgeon, dace and trout. Keynsham Lock on the Avon opened in 1727. Just above the lock are some visitor moorings and a pub, on an island between the lock and the weir. The weir side of the island is also the mouth of the River Chew.
  Memorial Park, the northern part of which has existed as parkland since the 19th century, as shown by the ordnance Survey maps of 1864 and 1867, was formally laid out after World War II was extended after the floods of 1968. It covers 10.7 hectares (26 acres) of woodland and grass alongside the River Chew. It commemorates the war dead of Keynsham and includes facilities including two children's play areas, a skateboard park, multi-sport area, bowling green, public toilets, a bandstand and refreshment kiosk. The formal gardens within the park are adjacent to the River Chew with the Dapps Hill Woods at its western end. Part of the park is known locally as Chew Park because of its proximity to the river and another area, close to Keynsham Abbey as Abbey Park. The park received the Green Flag Award in 2008/09, and again for 2009/10.
  On the outskirts of Keynsham lies Keynsham Humpy Tumps, one of the most floristically rich acidic grassland sites within the Avon area. The site is on a south-facing slope running alongside the Bristol to Bath railway line. It consists of open patches of grassland and bare rock, interspersed with blocks of scrub. It is the only site in Avon at which upright chickweed Moenchia erecta, occurs. Other locally notable plant species found here include annual knawel Scleranthus annuus, sand spurrey Spergularia rubra, subterranean clover Trifolium subterraneus and prickly sedge Carex muricata ssp. lamprocarpa. The site does not have any statutory conservation status, and is not managed for its biodiversity interest. Threats to its ecological value include the encroachment of scrub onto the grassland areas, and damage from motorcycle scrambling. Between Keynsham and Saltford, a 15 hectares (37 acres) area of green belt has been planted, with over 19,000 trees, as the Manor Road Community Woodland, which has been designated as a Nature Reserve. Nearby is the Avon Valley Country Park tourist attraction.
  Along with the rest of South West England, Keynsham has a temperate climate which is generally wetter and milder than the rest of England. The annual mean temperature is about 10 °C (50 °F) with seasonal and diurnal variations, but due to the modifying effect of the sea, the range is less than in most other parts of the United Kingdom. January is the coldest month with mean minimum temperatures between 1 °C (34 °F) and 2 °C (36 °F). July and August are the warmest months in the region with mean daily maxima around 21 °C (70 °F). In general, December is the dullest month and June the sunniest. The south west of England enjoys a favoured location, particularly in summer, when the Azores High extends its influence north-eastwards towards the UK.
  Cloud often forms inland, especially near hills, and reduces exposure to sunshine. The average annual sunshine totals around 1600 hours. Rainfall tends to be associated with Atlantic depressions or with convection. In summer, convection caused by solar surface heating sometimes forms shower clouds and a large proportion of the annual precipitation falls from showers and thunderstorms at this time of year. Average rainfall is around 800–900 mm (31–35 in). About 8–15 days of snowfall is typical. November to March have the highest mean wind speeds, with June to August having the lightest. The predominant wind direction is from the south west.
caption: The Lock Keeper pub on the River Avon
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