Natural Flood Management Pumped Catchments R&D Gaps
Natural Flood Management PumpedCatchments R&D gapsDr Lydia Burgess-GamblePrincipal Flood Risk Scientist, Environment AgencyEmail: wwnp@environment-agency.gov.uk@FCRMResearchEA
The Evidence
The Evidence kRoadshow s:wwnp@environment-agency.gov.uk
It’s not new65 greatexamplesprovided by king-with-natural-processes-to-reduce-flood-risk
We know
It’s not new
It works
Typically reduces flood risk forsmaller floods in small tomedium sized catchmentSmall catchmentMedium catchmentLarge catchmentLocal scale impact 10km2 100km2 1,000km2Impact not catchment wide, it is localised to where the measure has been implementedSmall flood 10 year return period eventsMedium flood From 10 year to 100 year return period eventsLarge flood 100 year return period events
It complements ratherthan replaces traditionalengineering
It almost always achievesmultiple benefits forpeople and wildlife
We don’t know
How effective NFM is in pumpedcatchments – would there be ademonstrable flood risk benefit?
What NFM looks like in a pumpedcatchment?Which measures are applicable?
Can NFM help enhancelongevity of existing FCRMinfrastructure/assets?
Can NFM help reduce needfor dredging/desilting?
Can NFM help us reducereliance on pumps andsave carbon?
Are other countriesalready doing this?Who can we learn from?
Practical Challenges River corridors in pumped catchments can be quiteconstrained for space Landowner buy-in in locations where land has a highagricultural value – payments for public goods Change in perception from getting water away fast tostoring it and holding it back
Policy Drivers25 Year Environment Plan says: We will strengthen domestic carbon offset mechanisms to encourage private sectorinvestment and develop markets for domestic carbon reduction We want to reduce our carbon emission by at least 80% from 1990 levels and achieve thisby 2050Climate Change Act says:UK carbon account for the year 2050 should be at least 80% lower than the 1990 baselineClimate Change Risk Assessment says: More action needed to restore carbon stores particularly peatlands Deliver wider uptake of NFM in high risk catchments where there are likely to be carbonstorage, water quality and biodiversity benefitsNational FCRM Strategy for England (DRAFT) says:Strategic objective 1.3 - Between now and 2030 all those involved in managing water willembrace and embed adaptive approaches to enhance the resilience of our environment to futureflooding and droughtUN Sustainable Development Goals says: Take urgent action to combat climate change and its impacts by regulating emissions andpromoting developments in renewable energy Protect, restore and promote sustainable use of terrestrial ecosystems, sustainably manageforests, combat desertification, halt and reverse land degradation and halt biodiversity loss
Typically reduces flood risk for smaller floods in small to medium sized catchment Small catchment 10km2 Medium catchment 100km2 Large catchment 1,000km2 Local scale impact Impact not catchment wide, it is localised to where the measure has been implemented Small flood 10 year return period events M
Financial Management of Flood Risk isbn 978-92-64-25767-2 21 2016 03 1 P Financial Management of Flood Risk Contents Chapter 1. Introduction: The prevalence of flood risk Chapter 2. Flood risk in a changing climate Chapter 3. Insuring flood risk Chapter 4. Improving the insurability of flood risk C
1) The HEC-RAS provides the flood profile for the worst flood intensity. This profile will facilitate to adopt appropriate flood disaster mitigation measures. 2) The flood profiles for different flood intensities with different return periods can be plotted at any given cross section of river. Also, such flood
each FRM Planning cycle will take. FRM Strategies will cover three of these cycles. Timeline of FRM Act Baseline appraisal of current flood risk Opportunities for Natural Flood Management Prioritisation of actions Consultation on FRM Strategies FRM Act 2009 National Flood Assessment Dec 2011 Flood hazard and flood risk maps FRM Strategies 2015 .
understand and predict. Nearly every community in Nebraska that faces flood risk has had a study conducted to predict the characteristics of a 1% annual chance flood (100-year flood). The Flood Insurance Study and the associated Flood Insurance Rate Map are the best sources of information. The data in these documents mixed with the
urban drainage systems (SUDS) and flood management in urban areas Final Report . an initial focus on land drainage and flood defence throughout the 1950s, 60s and 70s moved towards a flood control approach and then to flood management in the 1980s and
In order to create (flood) risk, a (natural flood) hazard, for example from rivers, the sea, or from surface water runoff after intense storms, needs to be present first. Flood hazard can be expressed as the probability of occurrence at a given location and can be modelled or mapped using flood maps. Hazards can be natural or non-natural.
Canal interacts with the River Trent and flood gates are operated to manage the flood risk. The Canal and River Trust is responsible for managing flood risk from canals. Integrated flooding occurs when two or more flood sources interact. For example, when river levels are high, sew
C. FINANCIAL ACCOUNTING STANDARDS BOARD In 1973, an independent full-time organization called the Financial Accounting Standards Board (FASB) was established, and it has determined GAAP since then. 1. Statements of Financial Accounting Standards (SFAS) These statements establish GAAP and define the specific methods and procedures for
