Case study:River Slea Rehabilitation - Revision history

Alexrrc at 14:06, 10 July 2018

2018-07-10T14:06:10Z

← Older revision		Revision as of 14:06, 10 July 2018
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	{{Case study status}}		{{Case study status
			\|Approval status=Approved
			}}
	{{Location		{{Location
	\|Location=52.995391616904236, -0.407561254180564		\|Location=52.995391616904236, -0.407561254180564

Alexrrc at 14:06, 10 July 2018

2018-07-10T14:06:00Z

← Older revision		Revision as of 14:06, 10 July 2018
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	\|Specific mitigation=Abstraction,		\|Specific mitigation=Abstraction,
	}}		}}
	{{Measures}}		{{Measures
			\|Bank and bed modifications measure=Creation of pools, Creation of berms,
			\|Floodplain / River corridor=Creation of two stage channel,
			\|Planform / Channel pattern=Creation of meanders, Channel narrowing, Riparian planting,
			}}
	{{Hydromorphological quality elements header}}		{{Hydromorphological quality elements header}}
	{{End table}}		{{End table}}

Alexrrc at 14:03, 10 July 2018

2018-07-10T14:03:57Z

← Older revision		Revision as of 14:03, 10 July 2018
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	}}		}}
	{{Project background}}		{{Project background}}
	{{Motivations}}		{{Motivations
			\|Specific mitigation=Abstraction,
			}}
	{{Measures}}		{{Measures}}
	{{Hydromorphological quality elements header}}		{{Hydromorphological quality elements header}}

Alexrrc at 14:02, 10 July 2018

2018-07-10T14:02:42Z

← Older revision		Revision as of 14:02, 10 July 2018
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	{{Toggle content start}}		{{Toggle content start}}
	{{Case study subcatchment}}		{{Case study subcatchment}}
	{{Site}}		{{Site
			\|Name=River Slea
			\|Heavily modified water body=No
			\|Protected species present=No
			\|Invasive species present=No
			}}
	{{Project background}}		{{Project background}}
	{{Motivations}}		{{Motivations}}

Alexrrc at 14:01, 10 July 2018

2018-07-10T14:01:55Z

← Older revision		Revision as of 14:01, 10 July 2018
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	{{Case study status}}		{{Case study status}}
	{{Location}}		{{Location
			\|Location=52.995391616904236, -0.407561254180564
			}}
	{{Project overview		{{Project overview
	\|Status=Complete		\|Status=Complete

Ascarr: Reverted edits by Ascarr (talk) to last revision by AndyL

2017-08-22T21:20:01Z

Reverted edits by Ascarr (talk) to last revision by AndyL

← Older revision		Revision as of 21:20, 22 August 2017
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	{{Case study status}}		{{Case study status}}
	{{Location		{{Location}}
	~~\|Location=River Slea~~
	}}
	{{Project overview		{{Project overview
	\|Status=Complete		\|Status=Complete
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	\|Project picture=Section2AfterDownstreamFaggots.jpg		\|Project picture=Section2AfterDownstreamFaggots.jpg
	\|Picture description=Section 2 following faggot installation to create berms with the help of volunteers		\|Picture description=Section 2 following faggot installation to create berms with the help of volunteers
	\|Project summary=The River Slea is an 18 mile long tributary of the River Witham, Lincolnshire. The River Slea is groundwater fed from Lincolnshire limestone ~~[[term:~~aquifer~~\|aquifers]]~~ and the flow depends on the on groundwater levels. Historically the River Slea flowed all year round. In the early 60s the flow of the river began to slow and ceased in 1962. This was due to a number of reasons such as over abstraction, increase in population and changes in weather cycles. After a public campaign in 1992, a pump was installed by the Environment Agency which delivers groundwater to the river at times of no flow. The Lincolnshire Rivers Trust (LRT) commissioned Clear Environmental to deliver the Sleaford Urban Opportunities Study, which was funded by Natural England. This study highlighted how the river would benefit from various rehabilitation techniques to enable wildlife to be more resilient during low flow periods and also contribute towards WFD objectives. With the help of the Wild Trout Trust, three sections of river were identified where restoration could be completed, this covered approximately 1.2km of river. Unfortunately, due to site constraints, work could only be completed on two sections (sections one and two). There were three phases to the works completed, these are detailed below;		\|Project summary=The River Slea is an 18 mile long tributary of the River Witham, Lincolnshire. The River Slea is groundwater fed from Lincolnshire limestone aquifer and the flow depends on the on groundwater levels. Historically the River Slea flowed all year round. In the early 60s the flow of the river began to slow and ceased in 1962. This was due to a number of reasons such as over abstraction, increase in population and changes in weather cycles. After a public campaign in 1992, a pump was installed by the Environment Agency which delivers groundwater to the river at times of no flow. The Lincolnshire Rivers Trust (LRT) commissioned Clear Environmental to deliver the Sleaford Urban Opportunities Study, which was funded by Natural England. This study highlighted how the river would benefit from various rehabilitation techniques to enable wildlife to be more resilient during low flow periods and also contribute towards WFD objectives. With the help of the Wild Trout Trust, three sections of river were identified where restoration could be completed, this covered approximately 1.2km of river. Unfortunately, due to site constraints, work could only be completed on two sections (sections one and two). There were three phases to the works completed, these are detailed below;

	Phase 1: Using an excavator, a low flow channel was created in section one and pools were created in section two. River bed material removed was used to create berms and meanders within the existing channel.		Phase 1: Using an excavator, a low flow channel was created in section one and pools were created in section two. River bed material removed was used to create berms and meanders within the existing channel.
Line 28:		Line 26:
	In 2015 section two was completely uniform with no pools or any habitat features. Following the work, 22 berms were constructed providing cover for fish and providing deeper areas that would help maintain the depth during low flow periods. Planting was successful, and in time, the vegetation will grow and create a natural meandering flow.		In 2015 section two was completely uniform with no pools or any habitat features. Following the work, 22 berms were constructed providing cover for fish and providing deeper areas that would help maintain the depth during low flow periods. Planting was successful, and in time, the vegetation will grow and create a natural meandering flow.
	\|Lessons learn=Work could not be carried out in section 3 due to the firmness of the riverbed. It is reccomended in the future that the firmness of the riverbed should be tested to ensure habitat improvement works can be carried out.		\|Lessons learn=Work could not be carried out in section 3 due to the firmness of the riverbed. It is reccomended in the future that the firmness of the riverbed should be tested to ensure habitat improvement works can be carried out.

	Install coir matting vegetation at the same time as installing brushwood, we had to rely on individual plug plants when planting. Although plugs are cheaper than matting.		Install coir matting vegetation at the same time as installing brushwood, we had to rely on individual plug plants when planting. Although plugs are cheaper than matting.
	}}		}}

Ascarr at 21:19, 22 August 2017

2017-08-22T21:19:17Z

← Older revision		Revision as of 21:19, 22 August 2017
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	{{Case study status}}		{{Case study status}}
	{{Location}}		{{Location
			\|Location=River Slea
			}}
	{{Project overview		{{Project overview
	\|Status=Complete		\|Status=Complete

Ascarr at 21:15, 22 August 2017

2017-08-22T21:15:40Z

← Older revision		Revision as of 21:15, 22 August 2017
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	\|Project picture=Section2AfterDownstreamFaggots.jpg		\|Project picture=Section2AfterDownstreamFaggots.jpg
	\|Picture description=Section 2 following faggot installation to create berms with the help of volunteers		\|Picture description=Section 2 following faggot installation to create berms with the help of volunteers
	\|Project summary=The River Slea is an 18 mile long tributary of the River Witham, Lincolnshire. The River Slea is groundwater fed from Lincolnshire limestone aquifer and the flow depends on the on groundwater levels. Historically the River Slea flowed all year round. In the early 60s the flow of the river began to slow and ceased in 1962. This was due to a number of reasons such as over abstraction, increase in population and changes in weather cycles. After a public campaign in 1992, a pump was installed by the Environment Agency which delivers groundwater to the river at times of no flow. The Lincolnshire Rivers Trust (LRT) commissioned Clear Environmental to deliver the Sleaford Urban Opportunities Study, which was funded by Natural England. This study highlighted how the river would benefit from various rehabilitation techniques to enable wildlife to be more resilient during low flow periods and also contribute towards WFD objectives. With the help of the Wild Trout Trust, three sections of river were identified where restoration could be completed, this covered approximately 1.2km of river. Unfortunately, due to site constraints, work could only be completed on two sections (sections one and two). There were three phases to the works completed, these are detailed below;		\|Project summary=The River Slea is an 18 mile long tributary of the River Witham, Lincolnshire. The River Slea is groundwater fed from Lincolnshire limestone [[term:aquifer\|aquifers]] and the flow depends on the on groundwater levels. Historically the River Slea flowed all year round. In the early 60s the flow of the river began to slow and ceased in 1962. This was due to a number of reasons such as over abstraction, increase in population and changes in weather cycles. After a public campaign in 1992, a pump was installed by the Environment Agency which delivers groundwater to the river at times of no flow. The Lincolnshire Rivers Trust (LRT) commissioned Clear Environmental to deliver the Sleaford Urban Opportunities Study, which was funded by Natural England. This study highlighted how the river would benefit from various rehabilitation techniques to enable wildlife to be more resilient during low flow periods and also contribute towards WFD objectives. With the help of the Wild Trout Trust, three sections of river were identified where restoration could be completed, this covered approximately 1.2km of river. Unfortunately, due to site constraints, work could only be completed on two sections (sections one and two). There were three phases to the works completed, these are detailed below;

	Phase 1: Using an excavator, a low flow channel was created in section one and pools were created in section two. River bed material removed was used to create berms and meanders within the existing channel.		Phase 1: Using an excavator, a low flow channel was created in section one and pools were created in section two. River bed material removed was used to create berms and meanders within the existing channel.
Line 26:		Line 26:
	In 2015 section two was completely uniform with no pools or any habitat features. Following the work, 22 berms were constructed providing cover for fish and providing deeper areas that would help maintain the depth during low flow periods. Planting was successful, and in time, the vegetation will grow and create a natural meandering flow.		In 2015 section two was completely uniform with no pools or any habitat features. Following the work, 22 berms were constructed providing cover for fish and providing deeper areas that would help maintain the depth during low flow periods. Planting was successful, and in time, the vegetation will grow and create a natural meandering flow.
	\|Lessons learn=Work could not be carried out in section 3 due to the firmness of the riverbed. It is reccomended in the future that the firmness of the riverbed should be tested to ensure habitat improvement works can be carried out.		\|Lessons learn=Work could not be carried out in section 3 due to the firmness of the riverbed. It is reccomended in the future that the firmness of the riverbed should be tested to ensure habitat improvement works can be carried out.

	Install coir matting vegetation at the same time as installing brushwood, we had to rely on individual plug plants when planting. Although plugs are cheaper than matting.		Install coir matting vegetation at the same time as installing brushwood, we had to rely on individual plug plants when planting. Although plugs are cheaper than matting.
	}}		}}

AndyL at 15:30, 21 June 2017

2017-06-21T15:30:28Z

@@ Line 1: / Line 1: @@
 {{Project overview
 |Status=Complete
@@ Line 26: / Line 28: @@
 Install coir matting vegetation at the same time as installing brushwood, we had to rely on individual plug plants when planting. Although plugs are cheaper than matting.
 }}

Alexrrc at 15:51, 6 June 2017

2017-06-06T15:51:00Z

← Older revision		Revision as of 15:51, 6 June 2017
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	\|Contact organisation=Lincolnshire Rivers Trust		\|Contact organisation=Lincolnshire Rivers Trust
	\|Contact organisation url=www.lincsrivers.org.uk/		\|Contact organisation url=www.lincsrivers.org.uk/
	\|Partner organisations=~~The~~ Wild Trout Trust,		\|Partner organisations=Wild Trout Trust,
	\|Multi-site=No		\|Multi-site=No
	\|Project picture=Section2AfterDownstreamFaggots.jpg		\|Project picture=Section2AfterDownstreamFaggots.jpg
Line 23:		Line 23:

	In 2015 section two was completely uniform with no pools or any habitat features. Following the work, 22 berms were constructed providing cover for fish and providing deeper areas that would help maintain the depth during low flow periods. Planting was successful, and in time, the vegetation will grow and create a natural meandering flow.		In 2015 section two was completely uniform with no pools or any habitat features. Following the work, 22 berms were constructed providing cover for fish and providing deeper areas that would help maintain the depth during low flow periods. Planting was successful, and in time, the vegetation will grow and create a natural meandering flow.

	\|Lessons learn=Work could not be carried out in section 3 due to the firmness of the riverbed. It is reccomended in the future that the firmness of the riverbed should be tested to ensure habitat improvement works can be carried out.		\|Lessons learn=Work could not be carried out in section 3 due to the firmness of the riverbed. It is reccomended in the future that the firmness of the riverbed should be tested to ensure habitat improvement works can be carried out.
	Install coir matting vegetation at the same time as installing brushwood, we had to rely on individual plug plants when planting. Although plugs are cheaper than matting.		Install coir matting vegetation at the same time as installing brushwood, we had to rely on individual plug plants when planting. Although plugs are cheaper than matting.
	}}		}}