Biosphere People Session

Special Partnership • Partners from approx. 30 organisations

• Exciting new work:

• 25 Year Environment Plan – Landscape Pioneer

– Marine Pioneer

• SWEEP – multi disciplinary programme led by Exeter University

with Plymouth University and PML

– Working on a range of projects that aim to deliver transformative regional impact using a natural capital approach

Flood Reduction….naturally

Natural Flood Management

Andy Bell

Context for Flood Management

• Pitt review 2008

– Catchment Flood Risk Management Plan

• National Ecosystem Assessment

– Highlight the value of natural measure and cost effectiveness

• Defra 25 Year Environment Plan

– Increase the natural capital providing a range of services for well being

Braunton Flood Risk Map

Times of higher flow

0.00

0.20

0.40

0.60

0.80

1.00

1.20

0.00

0.05

0.10

0.15

0.20

0.25

0.30

0.35

20/01/17 27/01/17 03/02/17 10/02/17 17/02/17 24/02/17 03/03/17 10/03/17

FLO

W V

ELO

CIT

Y (M

/S)

FLO

W R

ATE

(C

UM

ECS)

AN

D W

ATE

R L

EVEL

(M

)

Date

ACLAND STRM D/S FLOW RATE ACLAND STRM D/S ISCO LEVEL ACLAND STRM D/S FLOW VELOCITY

Rainfall and Instream Flow Rate

0.000

0.050

0.100

0.150

0.200

0.250

0.300

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

10

:15

:00

11

:00

:00

11

:45

:00

12

:30

:00

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:15

:00

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:00

14

:45

:00

15

:30

:00

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:15

:00

17

:00

:00

17

:45

:00

18

:30

:00

19

:15

:00

20

:00

:00

20

:45

:00

21

:30

:00

22

:15

:00

23

:00

:00

23

:45

:00

00

:30

:00

01

:15

:00

02

:00

:00

02

:45

:00

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:30

:00

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:15

:00

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:00

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:30

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:15

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11

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13

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14

:00

:00

Flo

w R

ate

(cu

mec

s)

Rai

nfa

ll (m

m)

Date and Time

Acland Rainfall and Flow Rate

Rainfall(mm)

Flow rate(Cumecs)

29/01/2017 30/01/2017

Runoff Map

Location of NFM Measures

Legend

Boode_NFM

feature

Constructed wetland

Dam/Leaky dropboards

Ehanced wetland

Hedge Enhance

Hedge New

Leakey Hedge/Dam

NFM planting

171.57m 179.18m

129.99m 84.96m

156.67m

27.3m

Hedgerow Specification

Fence

2.85m

0.57m2

0.4m

0.15m

1.2m

1.51m

0.23m2

1.5m

Fence

1.6m

Concavity 80-100mm

0.8m

0.83m

0.72m2

Baffle dam cross-section

0.5m 1m 0

Log dams

Wookey Hole Village (2017) Source: http://www.wookeyhole.info/index.php/useful-

information/190-build-a-leaky-dam-and-do-your-bit

Log dams - Stroud

Photo by: Sophia Craddock

Photo by: Sophia Craddock

Photo by: Sophia Craddock

Photo by: Sophia Craddock

Woodland Planting

Area 1: 0.17ha

Area 2: 0.42ha

Scheme Costs Item Cost Source

Project Management £2,500 DCC/EA Design £3,000 DCC/EA

Ante project river monitoring £7,000 DCC/EA

Groundworks & hedge banks £23,400 DCC/EA

large woody debris dams materials and installation

£3,600 DCC/EA

fencing £2,000 DCC/EA Sub Total £41,500

Woodland Planting £20,000 Biodiversity Offset Post project monitoring and assessment (equipment and report)

£40,000 NE

TOTAL £101,500

Next steps

Next steps

Flood Attenuation

Identify presence/absence and abundance of flood reducing habitats

Kenwith NFM

Coastal NFM

Ilfracombe NFM Combe Martin

NFM

Culm Project

Woods4Water

Key Questions

• This needs to happen a lot more; how do we achieve that?

• How can we streamline the processes?

• How can we involve the community more?

• Is there a way be smarter with developer contributions and net gain?

Thank you for participating