DEVELOPMENT OF ENVIRONMENTAL
STANDARDS
(WATER RESOURCES)
STAGE 2 REPORT: TYPOLOGY
REVIEW
WFD48 Stage 2
July 2005
PART I – RIVERS
Introduction
In order to deliver the ecological objectives of the Water Framework
Directive (WFD), regulatory standards are needed that will allow the
agencies to determine the ecological flow requirements of UK surface
freshwaters. The WFD requires member states to assign water bodies to
each type and thence to assign reference conditions to each type, to be
used as 'baseline' conditions against which management targets can be
set.
The WFD System A typology has been established for the reporting
elements of the WFD in the UK, and the UK Technical Advisory Group has
begun to define associated reference conditions (UKTAG; 2003). However,
there are also a number of existing typologies and classification
systems which have been developed both in the UK and overseas, and
applied in various river management settings.
The aim of this part of the project is to review typologies and
classification systems of relevance to the setting and implementation
of environmental flow standards. In this part of the report, some of
the general principles behind typologies are discussed, followed by a
review of particular typologies with specific consideration of their
utility, and limitations, for the particular task of developing a new
typology suitable for setting type-based environmental flows for UK
rivers. Appendix 1 contains a table which provides a brief synopsis of
the river typologies reviewed.
PART II – LAKES
The particular focus of this project is the development of
environmental standards for water resources. In this section
addressing lakes, we focus on typologies for lake classification, with
a view to the identification and/or modification of typologies which
will support the development of methods for assessing the sensitivity
of lakes to hydrological pressures. The section presents a
review of existing typologies and discusses implications for the work
of this project.
Copies of this report are available from the Foundation, in electronic
format on CDRom at £20.00 + VAT or hard copy at
£25.00, less 20% to FWR members.
N.B.
The report is available for download from the SNIFFER Website