Senatsverwaltung für Gesundheit, Umwelt und Verbraucherschutz Project meeting ENWAMA in Belfast, 10. March 2010 Christian Wolter, Tanja Pottgiesser, Jochem Kail, Martin Halle, Ute Mischke, Klaus van de Weyer, Matthias Rehfeld-Klein, Antje Köhler PEWA: Good Ecological Potential of Waterways in the Elbe river basin
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Senatsverwaltung für Gesundheit, Umwelt und Verbraucherschutz Project meeting ENWAMA in Belfast, 10. March 2010 Christian Wolter, Tanja Pottgiesser, Jochem.
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Senatsverwaltung für Gesundheit, Umwelt und Verbraucherschutz
Project meeting ENWAMA in Belfast, 10. March 2010
Christian Wolter, Tanja Pottgiesser, Jochem Kail, Martin
Halle, Ute Mischke, Klaus van de Weyer, Matthias
Rehfeld-Klein, Antje Köhler
PEWA:
Good Ecological Potential of
Waterways in the Elbe river basin
• about 2360 km waterways (except Elbe)
• rivers and lakes
• about 1500 km of waterways discussed in the project
• 70 % of these preliminary defined as "heavily modified water body" or "artificial water body"
Human activities / claims• Navigation (freight VDE 17, tourists)
• Flood protection
• Industry
• Receiving water
• Settlement in river flood plains
• …
Objectives
Objectives of the project
• derivation of good ecological potential for federal- und landwaterways of the Elbe river basin
- development of a new method
- application on two examples
• guide for planning ecological measures
- assortment of effective and useful measures, which can be combined with the actual use (navigation, flood protection …)
- develope short but expressive descriptions of the measure characteristics
Employer
Employee
Biologists
Associated administration
Senat administration of health, environment
and consumer protection
Umweltbüro Essen
Biologists Associated administration
• The german federal instititute of hydrology
• Leibniz-institute of freshwater ecology and inland fisheries
• lanaplan - Macrophyte Services and Scientific Underwater Photography
• Administration of waterway new construction
• The german federal instititute of hydrology
• Water and navigation administration
• Federal waterways engineering and research institute
• The Federal Environment Agency
• Environment Agency Brandenburg
• Agency of flood protection and water resources management Sachsen-Anhalt
Defining good ecological potential
according to the „Prague approach“ (good practice paper)
Step 1: Measures to reach maximum ecological potential (MEP) Excluding measures having a significant adverse effect
Step 2: Measures to reach good ecological potential (GEP)Further excluding measures that, in combination, probably only deliver slight ecological improvement
Step 3: Abiotic conditions (GEP)Assessing the effect on hymorhpoligic and physico-chemical conditions
Step 4: Biological state (GEP)Assessing the biological state based on the abiotic conditions
Step 5: Programme of Measures (not part of Prague approach)Describing GEP measures in detailConsidering costsExtension of deadlines or defining less stringent objectives, if necessary
Ab
ioti
c co
nd
itio
ns
bio
log
ical
sta
te
(ME
P)
Prague approach
Strategy
Step 2: Mesures (GEP)
Step 3: Abiotic conditions (GEP)
Step 1: Mesures (MEP)
Step 2: Abiotic conditions (MEP)
Step 3: Biologic characteristics (MEP)
Step 4: Biologic state (GEP)
Step 5: Abiotic conditions(GEP)
Step 6: Maesures (GEP)
Step 7 respective 5: Programme of messures
according to the „Prague approach“ (good practice paper)
Defining good ecological potential …
... according to the HMWB code of practice
Step 4: Biologic state (GEP)
Grouping of water bodies Grouping of the waterways in the Elbe catchment
(= „HMWB classification“)
Measures
Abiotic conditions
Good ecological potential
Major steps
Major steps in defining GEP in the PEWA project
Grouping of water bodies based on natural conditions and specific uses:
• River width• Shipping lane width• Impoundments (impounded, free-flowing)• Land use (urban, non-urban)
(terrestrial development potential)• River width / shipping land width ratio
(aquatic development potential)
Case groups
17 groups
Group Characteristics
BW1 • Federal waterway • River width class: 10-25 m, >25-40 m und >40-70 m • Shipping lane width: about 30 m or about 40 m • River width / shipping land width ratio ≤2, low aquatic development potential • Impounded or artificial • Urban land-use; low terrestrial development potential
Example: BW 1 and BW 6
Type: Large sand- and clay characterized lowland rivers
Grouping of water bodies
Measures Selecting specific, effective combinations of measures
Abiotic conditions
Good ecological potential
Major steps
Major steps in defining GEP in the PEWA project
Measures
Catalogue of Measures
Main categories / objectives
1 Reestablishing ecological sound hydraulics
2 Promoting natural morphodynamics
3 Improving connectivity
4 Improving instream habitat quality
5 Improving offstream habitat quality
6 Promoting natural flood protection
Measures
Maesure characteristics
Allg
emei
ne B
esch
reib
ung
With judgement of realization (compatibility with human activity, maintenance effort, costs…)
•Human activity with relevance for environment shipping, flood protection…