Case study:River Valency at Boscastle - Revision history

Ascarr at 11:03, 21 February 2018

2018-02-21T11:03:22Z

← Older revision		Revision as of 11:03, 21 February 2018
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	\|Contact organisation url=www.environment-agency.gov.uk/		\|Contact organisation url=www.environment-agency.gov.uk/
	\|Multi-site=No		\|Multi-site=No
			\|Project picture=P1010022.JPG
	\|Project summary=Boscastle village is located in a steep sided and narrow valley through which the River Valency flows down to the harbour. In 2004 an intense storm centred over the small wooded catchment caused massive erosion of sediment and river-side trees. This,combined with high flows, inundated the village with water and debris causing extensive damage.		\|Project summary=Boscastle village is located in a steep sided and narrow valley through which the River Valency flows down to the harbour. In 2004 an intense storm centred over the small wooded catchment caused massive erosion of sediment and river-side trees. This,combined with high flows, inundated the village with water and debris causing extensive damage.

2017-06-01T09:20:46Z

← Older revision		Revision as of 09:20, 1 June 2017
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	\|Bank and bed modifications measure=Excavation of bedrock		\|Bank and bed modifications measure=Excavation of bedrock
	\|Floodplain / River corridor=Construction of flood wall		\|Floodplain / River corridor=Construction of flood wall
	\|Planform / Channel pattern=Change in bed profile, ~~Pools~~, embayments and cascades created		\|Planform / Channel pattern=Change in bed profile, Creation of pools, embayments and cascades created
	}}		}}
	{{Hydromorphological quality elements header}}		{{Hydromorphological quality elements header}}

2015-10-23T15:13:52Z

← Older revision		Revision as of 15:13, 23 October 2015
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	\|Name=River Valency at Boscastle		\|Name=River Valency at Boscastle
	\|WFD water body code=GB108049007170		\|WFD water body code=GB108049007170
			\|WFD water body name=VALENCY
	\|Pre-project morphology=Bedrock cascade with lower gradient		\|Pre-project morphology=Bedrock cascade with lower gradient
	\|Reference morphology=Bedrock cascade with higher gradient		\|Reference morphology=Bedrock cascade with higher gradient
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	\|Protected species present=No		\|Protected species present=No
	\|Invasive species present=No		\|Invasive species present=No
	\|Species=Atlantic salmon, European eel (Anguilla anguilla),		\|Species=Atlantic salmon, European eel (Anguilla anguilla),
	\|Dominant substrate=Gravel		\|Dominant substrate=Gravel
	\|River corridor land use=Urban (village)		\|River corridor land use=Urban (village)

2013-09-06T15:28:24Z

@@ Line 24: / Line 24: @@
 to right bank, angled downstream at about 45°. It had vertical fracture lines as well as regular intrusions of much harder quartz. Concept drawings were provided to show how the rock was to be removed. An engineer worked closely with machine operators to obtain the desired result of the left side sloping with the dip and the right side vertical along the fractures. Both sides were zig-zagged to stay within the'character' stone retaining walls.
 }}
 {{Case study subcatchment
 |Subcatchment=VALENCY
@@ Line 72: / Line 101: @@
 {{Monitoring documents}}
 {{Monitoring documents end}}
-{{Image gallery}}
 {{Additional Documents}}
 {{Additional Documents end}}
@@ Line 103: / Line 107: @@
 {{Additional links and references footer}}
 {{Supplementary Information}}

2013-09-06T15:27:30Z

← Older revision		Revision as of 15:27, 6 September 2013
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	to right bank, angled downstream at about 45°. It had vertical fracture lines as well as regular intrusions of much harder quartz. Concept drawings were provided to show how the rock was to be removed. An engineer worked closely with machine operators to obtain the desired result of the left side sloping with the dip and the right side vertical along the fractures. Both sides were zig-zagged to stay within the'character' stone retaining walls.		to right bank, angled downstream at about 45°. It had vertical fracture lines as well as regular intrusions of much harder quartz. Concept drawings were provided to show how the rock was to be removed. An engineer worked closely with machine operators to obtain the desired result of the left side sloping with the dip and the right side vertical along the fractures. Both sides were zig-zagged to stay within the'character' stone retaining walls.
	}}		}}
	{{Case study subcatchment}}		{{Case study subcatchment
			\|Subcatchment=VALENCY
			}}
	{{Site		{{Site
	\|Name=River Valency at Boscastle		\|Name=River Valency at Boscastle

2013-09-05T16:01:31Z

2013-08-07T14:45:08Z

← Older revision		Revision as of 14:45, 7 August 2013
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	\|Bank and bed modifications measure=Excavation of bedrock		\|Bank and bed modifications measure=Excavation of bedrock
	\|Floodplain / River corridor=Construction of flood wall		\|Floodplain / River corridor=Construction of flood wall
	\|Planform / Channel pattern=Change in bed profile; Pools, embayments and cascades created		\|Planform / Channel pattern=Change in bed profile, Pools, embayments and cascades created
	}}		}}
	{{Hydromorphological quality elements header}}		{{Hydromorphological quality elements header}}

2013-07-08T14:24:49Z

← Older revision		Revision as of 14:24, 8 July 2013
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	{{Image gallery}}		{{Image gallery}}
	{{Case study image		{{Case study image
	\|File name=~~Valency ReferenceReach~~		\|File name=Upstream reference reach.JPG
	\|Caption=Reference reach upstream of Boscastle		\|Caption=Reference reach upstream of Boscastle
	}}		}}

2013-07-08T14:20:47Z

@@ Line 71: / Line 71: @@
 {{Monitoring documents end}}
 {{Image gallery}}
 {{Image gallery end}}
 {{Additional Documents}}

2013-07-08T14:02:29Z

← Older revision		Revision as of 14:02, 8 July 2013
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	}}		}}
	{{Measures		{{Measures
	\|Bank and bed modifications measure=Excavation of bedrock ~~to deepen channel~~		\|Bank and bed modifications measure=Excavation of bedrock
	\|Floodplain / River corridor=Construction of flood wall		\|Floodplain / River corridor=Construction of flood wall
	\|Planform / Channel pattern=Change in ~~gradient as a result of deepening~~		\|Planform / Channel pattern=Change in bed profile; Pools, embayments and cascades created
	}}		}}
	{{Hydromorphological quality elements header}}		{{Hydromorphological quality elements header}}