Case study:Harbertonford Flood Alleviation Scheme - Revision history

Alexrrc at 15:11, 2 January 2019

2019-01-02T15:11:00Z

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	}}		}}
	{{Measures		{{Measures
	\|Bank and bed modifications measure=Bed lowering, Creation of pools and riffles~~, Riverbed widening~~, Weir modification,		\|Bank and bed modifications measure=Bed lowering, Creation of pools and riffles, Weir modification,
	\|Floodplain / River corridor=Containment bund to prevent flooding, Construction of flood wall,		\|Floodplain / River corridor=Containment bund to prevent flooding, Construction of flood wall,
			\|Planform / Channel pattern=Channel widening,
	\|Other technical measure=Surface drainage systems improved, SUDS,		\|Other technical measure=Surface drainage systems improved, SUDS,
	\|Social measures=Engagement with schools, Community Education,		\|Social measures=Engagement with schools, Community Education,

Alexrrc at 12:14, 1 November 2018

2018-11-01T12:14:01Z

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	\|Total cost category=more than 10000 k€		\|Total cost category=more than 10000 k€
	\|Total1 cost=3500000		\|Total1 cost=3500000
	\|Funding sources=~~DEFRA~~, South Hams District Council, Harbertonford Parish Council		\|Funding sources=Defra, South Hams District Council, Harbertonford Parish Council
	}}		}}
	{{Motivations		{{Motivations

Alexrrc at 13:28, 6 June 2017

2017-06-06T13:28:04Z

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	\|Main contact id=NickRRC		\|Main contact id=NickRRC
	\|Contact organisation=River Restoration Centre		\|Contact organisation=River Restoration Centre
	\|Partner organisations=Environment Agency, ~~DEFRA~~, South Hams District Council & Harbertonford Parish Council		\|Partner organisations=Environment Agency, Defra, South Hams District Council & Harbertonford Parish Council
	\|Multi-site=No		\|Multi-site=No
	\|Project picture=Harbertonford Project Works.png		\|Project picture=Harbertonford Project Works.png

Alexrrc at 07:38, 6 June 2017

2017-06-06T07:38:06Z

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	\|Floodplain / River corridor=Containment bund to prevent flooding, Construction of flood wall,		\|Floodplain / River corridor=Containment bund to prevent flooding, Construction of flood wall,
	\|Other technical measure=Surface drainage systems improved, SUDS,		\|Other technical measure=Surface drainage systems improved, SUDS,
	\|Social measures=~~Local primary school visited site during construction of dam and have continued to visit 'reservoir' site~~, ~~to study ecological development.~~		\|Social measures=Engagement with schools, Community Education,
	}}		}}
	{{Hydromorphological quality elements header}}		{{Hydromorphological quality elements header}}

Alexrrc at 07:37, 6 June 2017

2017-06-06T07:37:35Z

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	*Zoned clay-core embankment dam constructed 2km US of Harbertonford, with 4.1 ha flood storage reservoir (150, 000 cu. metre capacity), capable of withstanding up to 1:40 year event.		*Zoned clay-core embankment dam constructed 2km US of Harbertonford, with 4.1 ha flood storage reservoir (150, 000 cu. metre capacity), capable of withstanding up to 1:40 year event.
	*Flood wall installed along a portion of the river, through Harbertonford. Replaced earth bank. Surface drainage systems improved.		*Flood wall installed along a portion of the river, through Harbertonford. Replaced earth bank. Surface drainage systems improved.

			Community Involvement - Local primary school visited site during construction of dam and have continued to visit 'reservoir' site, to study ecological development.
	}}		}}
	{{Image gallery}}		{{Image gallery}}

Alexrrc at 11:29, 1 June 2017

2017-06-01T11:29:16Z

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	*Channel lowered by 600mm through Harbertonford using pool-riffle sequences, to increase channel capacity, to withstand 28 cumec flow (1:10 year event). Also widened in areas to further increase capacity. Two weirs lowered to minimise backwater effect (Crowdy Mill and Mill Leat).		*Channel lowered by 600mm through Harbertonford using pool-riffle sequences, to increase channel capacity, to withstand 28 cumec flow (1:10 year event). Also widened in areas to further increase capacity. Two weirs lowered to minimise backwater effect (Crowdy Mill and Mill Leat).
	*Zoned clay-core embankment dam constructed 2km US of Harbertonford, with 4.1 ha flood storage reservoir (150, 000 cu. metre capacity), capable of withstanding up to 1:40 year event.		*Zoned clay-core embankment dam constructed 2km US of Harbertonford, with 4.1 ha flood storage reservoir (150, 000 cu. metre capacity), capable of withstanding up to 1:40 year event.
			*Flood wall installed along a portion of the river, through Harbertonford. Replaced earth bank. Surface drainage systems improved.
	}}		}}
	{{Image gallery}}		{{Image gallery}}

Alexrrc at 11:28, 1 June 2017

2017-06-01T11:28:55Z

← Older revision		Revision as of 11:28, 1 June 2017
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	}}		}}
	{{Measures		{{Measures
	\|Bank and bed modifications measure=~~Channel lowered by 600mm through Harbertonford using pool-riffle sequences~~, ~~to increase channel capacity~~, ~~to withstand 28 cumec flow (1:10 year event). Also widened in areas to further increase capacity. Two weirs lowered to minimise backwater effect (Crowdy Mill and Mill Leat).~~		\|Bank and bed modifications measure=Bed lowering, Creation of pools and riffles, Riverbed widening, Weir modification,
	\|Floodplain / River corridor=~~Zoned clay-core embankment dam constructed 2km US~~ of ~~Harbertonford, with 4.1 ha~~ flood ~~storage reservoir (150~~,~~000 cu. metre capacity), capable of withstanding up to 1:40 year event.~~		\|Floodplain / River corridor=Containment bund to prevent flooding, Construction of flood wall,
	\|Other technical measure=~~Flood wall installed along a portion of the river, through Harbertonford. Replaced earth bank.~~ Surface drainage systems improved.		\|Other technical measure=Surface drainage systems improved, SUDS,
	\|Social measures=Local primary school visited site during construction of dam and have continued to visit 'reservoir' site, to study ecological development.		\|Social measures=Local primary school visited site during construction of dam and have continued to visit 'reservoir' site, to study ecological development.
	}}		}}

Alexrrc at 11:25, 1 June 2017

2017-06-01T11:25:53Z

← Older revision		Revision as of 11:25, 1 June 2017
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	As part of the bed-lowering technique, a series of pool-riffle sequences were constructed within the channel through Harbertonford - a best practice approach for habitat enhancement, proposed by the River Restoration Centre (www.therrc.co.uk). These would provide both improved spawning habitat and habitat for adult fish.		As part of the bed-lowering technique, a series of pool-riffle sequences were constructed within the channel through Harbertonford - a best practice approach for habitat enhancement, proposed by the River Restoration Centre (www.therrc.co.uk). These would provide both improved spawning habitat and habitat for adult fish.

			Works included:
			*Channel lowered by 600mm through Harbertonford using pool-riffle sequences, to increase channel capacity, to withstand 28 cumec flow (1:10 year event). Also widened in areas to further increase capacity. Two weirs lowered to minimise backwater effect (Crowdy Mill and Mill Leat).
			*Zoned clay-core embankment dam constructed 2km US of Harbertonford, with 4.1 ha flood storage reservoir (150, 000 cu. metre capacity), capable of withstanding up to 1:40 year event.
	}}		}}
	{{Image gallery}}		{{Image gallery}}

Ascarr at 08:46, 15 October 2013

2013-10-15T08:46:34Z

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	{{Toggle content start}}		{{Toggle content start}}
	{{Case study subcatchment		{{Case study subcatchment
	\|Subcatchment=~~Harbourne~~		\|Subcatchment=HARBOURNE RIVER
	}}		}}
	{{Site		{{Site

SFW Nikhil at 10:46, 6 September 2013

2013-09-06T10:46:32Z

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 As part of the bed-lowering technique, a series of pool-riffle sequences were constructed within the channel through Harbertonford - a best practice approach for habitat enhancement, proposed by the River Restoration Centre (www.therrc.co.uk). These would provide both improved spawning habitat and habitat for adult fish.
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