Proactive Initiative Progress in year 2

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Proactive InitiativeProgress in year 2

• Paul Quinn

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Proactive projects

• Proactive Mitigation of surface and groundwater
  systems (Sean Burke), 4 year
• Belford Proactive Catchment Flood Solutions
  (Peter Kerr), 3 year
• Development of the FARMTOOL (Amy Parrott),
  Dissemination of evidence - What next?
• Ouseburn Catchment Study (EA flood Levy, peter
  Kerr), 1 year of funding
• Peatscapes (NPAONB) possible extension
• Finished - FIRM plans for the Eden and
  Northumberland (Sean Burke)
• Finished - Ouseburn making space for water
• Finished - Frome Piddle Making information
  available for Integrated Catchment Management
  (Paul Hulme)

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Actions from last MAG

• Get evidence now!
• Uptake issues (upscale)
• Nafferton 200-300 visitors in 2 years
• Belford (EA, increasing numbers of visitors)
• Fenton centre (EA, Natural England, FWAG)
• Eden (ERT, EA, NPAONB group)
• Disseminate what are we concluding?
• Cost effectiveness
• Demonstration activities at new sites Eden?

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CHASM - Eden

• CATCHMENT HYDROLOGY
• We understand (after 1 million) what we can
  measure and not measure
• AND SUSTAINABLE MANAGEMENT
• We have not intervened and improved the R. Eden
• YET!
• BUT I think we are ready to start, we know a lot
  about the Eden

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Temple Sowerby 661km2
Appleby 332km2
Blind Beck
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Evidence and Uptake

• FIRM plans and Flooding from Nafferton farm study
• Nutrient management from Nafferton farm study
• PhD study of runoff and sediment
• Large scale flood management Belford
• Decision support tools The FARMTOOL
• Associated projects (Ouseburn and peatscapes)

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Flow Propagation Experiment- Nafferton Farm

• Making space for water (Wendy brooks and Amy
  Parrot)
• Numerous small features
• Sediment trap
• Sedge wetland
• Willow wetland
• 3 leaky barriers
• 2 identical flow gauges 400 meter apart

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At Nafferton Farm, The Making Space for Water
Initiative commissioned an experiment to test the
attenuation effects of several these features on
flow propagation. Within a 400m stretch of ditch
as series of attenuation features were present
(see above)- the sediment trap the vertical
plastic barrier the sedge wetland (25m long)
the willow wetland (30m long) and three wooden
leaky barriers. Thus the net impact of all the
features could on a flood wave magnitude could be
made, i.e. Qp
Two identical flumes were installed upstream and
downstream of the 400 m ditch experiment.
The catchment area draining to the upstream flume
is estimated to be 0.65 km2 and at the downstream
flume is 0.8 km2.
A69 to Newcastle
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Features in operation
On-line Sediment Trap
Willow Wetland
Leaky Barriers
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Study period 2008
Storm B
Storm A
N.B difference in Background flow
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Storm dynamics for Storm A- 17.6 mm in 18 hours
Second peak- 9.6 mm in 10 hours
First peak- 8mm in 8 hours
N.B. the flow is lower downstream than
upstream the first flood wave is greatly
attenuated The second peak is less attenuated
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Storm Dynamics -Storm B 29 mm in 90 hours
Second peak - 9.6 mm in 6 hours
First peak - 11.2 mm in 5hours
N.B. the first wave is attenuated The second
wave is less attenuated this is approx a 1-in 1
year return interval event
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Simulated results
500 m ditch with a 3050m wetland
Widened ditch 3500m and willow
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Conclusions and what next?

• Small features in ditches can attenuate flow,
  less effective when antecedent conditions are wet
• We need more storms and more sites
• Great effect on runoff just as it is getting
  going i.e. at source
• We need to study the effect of larger features
  (bunded ponds) measure water quality
• Exploit the space within buffer zones
• Willow is very effective in ditches and in
  winter we need to measure this show any water
  quality effects
• Any dead water (e.g. sediment trap) seems very
  effective
• First study at Belford and then Sykeside (Eden)
  in year 3 and 4 and possibly Doomsgate (Eden)??
  Continue at Nafferton