1、May 2017 English price group 20No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 07.060; 13.060.45!%eBh“2663169www.di
2、n.deDIN EN 16870Water quality Guidance standard on determining the degree of modification of lake hydromorphology;English version EN 16870:2017,English translation of DIN EN 16870:2017-05Wasserbeschaffenheit Anleitung zur Beurteilung von Vernderungen der hydromorphologischen Eigenschaften von Seen;E
3、nglische Fassung EN 16870:2017,Englische bersetzung von DIN EN 16870:2017-05Qualit de leau Guide pour la dtermination des conditions hydromorphologiques des lacs;Version anglaise EN 16870:2017,Traduction anglaise de DIN EN 16870:2017-05www.beuth.deDTranslation by DIN-Sprachendienst.In case of doubt,
4、 the German-language original shall be considered authoritative.Document comprises 49 pages 05.17 2 A comma is used as the decimal marker. National foreword This document (EN 16870:2017) has been prepared by Technical Committee CEN/TC 230 “Water analysis” (Secretariat: DIN, Germany). The responsible
5、 German body involved in its preparation was DIN-Normenausschuss Wasserwesen (DIN Standards Committee Water Practice), Working Committee NA 119-01-03 AA “Water examination (CEN/TC 230, ISO/TC 147)”. DIN EN 16870:2017-05 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16870 February 2017 ICS 07.
6、060; 13.060.45 English Version Water quality - Guidance standard on determining the degree of modification of lake hydromorphology Qualit de leau - Guide pour la dtermination des conditions hydromorphologiques des lacs Wasserbeschaffenheit - Anleitung zur der hydromorphologischen Eigenschaften von S
7、een This European Standard was approved by CEN on 4 December 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical
8、 references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of
9、 a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Mac
10、edonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALIS
11、ATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16870:2017 EBeurteilung von Vernderungen -EN 16870:2017 (E) 2Contents Page E
12、uropean foreword . 4 Introduction 5 1 Scope 6 2 Normative references 6 3 Terms and definitions . 6 4 Principle 10 5 Determining the hydromorphological modifications of lakes 10 5.1 Feature categories . 10 Table 1 Features to be assessed when determining the hydromorphological modifications of lakes
13、. 11 5.2 Procedure for scoring . 11 Table 2 Conversion table 12 6 Interpreting and reporting hydromorphological modifications 12 6.1 Modification scores . 12 Table 3 Options, applications and procedures for reporting hydromorphological modification scores . 13 6.2 Assigning classification terms . 13
14、 Table 4 Classification terms for 5 classes (Score band A) . 14 Table 5 Classification terms for 3 classes (Score band B) 14 Annex A (normative) Characterization of lake modification based on hydromorphological features 15 Table A.1 Characterization of lake modification based on hydromorphological f
15、eatures 16 Annex B (normative) Alterations to mean annual water level range. 29 Table B.1 Alterations to mean annual water level range . 29 Annex C (normative) Land cover in the lake catchment . 31 Table C.1 Land cover in the lake catchment 31 Annex D (informative) Case study examples . 32 D.1 Lago
16、Maggiore (Italy) 32 D.1.1 Summary description . 32 Figure D.1 Location of Lago Maggiore 32 D.1.2 Morphometric characteristics . 33 Table D.1 Morphometric characteristics of Lago Maggiore . 33 D.1.3 Degree of modification using Annex A 33 Table D.2 Modification scores for Lago Maggiore, using reporti
17、ng option 1 33 Table D.3 Modification scores for Lago Maggiore using reporting options 2, 3 and 4 . 34 DIN EN 16870:2017-05 EN 16870:2017 (E) 3D.1.4 Conclusions . 34 D.2 Lago Bidighinzu (Italy) . 35 D.2.1 Summary description 35 Figure D.2 Location of Lago Bidighinzu . 35 D.2.2 Morphometric character
18、istics . 36 Table D.4 Morphometric characteristics of Lago Bidighinzu 36 D.2.3 Degree of modification using Annex A 36 Table D.5 Modification scores for Lago Bidighinzu, using reporting option 1 36 Table D.6 Modification scores for Lago Bidighinzu using reporting options 2, 3 and 4 37 D.2.4 Conclusi
19、ons . 37 D.3 Lake Lidzbarskie (Poland) 38 D.3.1 Summary description 38 Figure D.3 Location of Lake Lidzbarskie and a map of its bathymetry 38 D.3.2 Morphometric characteristics . 38 Table D.7 Morphometric characteristics of Lake Lidzbarskie 39 D.3.3 Degree of modification using Annex A 39 Table D.8
20、Modification scores for Lake Lidzbarskie, using reporting option 1 39 Table D.9 Modification scores for Lake Lidzbarskie using reporting options 2, 3 and 4 41 D.3.4 Conclusions . 41 D.4 Lake Velenje (Slovenia) 41 D.4.1 Summary description 41 Figure D.4 Location of Lake Velenje 42 D.4.2 Morphometric
21、characteristics . 42 Table D.10 Morphometric characteristics of Lake Velenje 42 D.4.3 Degree of modification using Annex A 43 Table D.11 Modification scores for Lake Velenje, using reporting option 1 43 Table D.12 Modification scores for Lake Velenje using reporting options 2, 3 and 4 44 D.4.4 Concl
22、usions . 44 D.5 Arkanj Lake (Serbia) . 44 D.5.1 Summary description 44 D.5.2 Morphometric characteristics . 44 Table D.13 Morphometric characteristics of Arkanj Lake 45 D.5.3 Degree of modification using Annex A 45 Table D.14 Modification scores for Arkanj Lake, using reporting option 1 . 46 Table D
23、.15 Modification scores for Arkanj Lake, using reporting options 2, 3 and 4 . 47 D.5.4 Conclusions . 47 DIN EN 16870:2017-05 EN 16870:2017 (E) 4 European foreword This document (EN 16870:2017) has been prepared by Technical Committee CEN/TC 230 “Water analysis”, the secretariat of which is held by D
24、IN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by August 2017, and conflicting national standards shall be withdrawn at the latest by August 2017. Attention is drawn to the possibility that some
25、 of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this Europ
26、ean Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovak
27、ia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 16870:2017-05 EN 16870:2017 (E) 5 Introduction This European Standard will enable broad comparisons to be made of the hydromorphological condition of lakes throughout Europe (e.g. for reporting by the European Environmen
28、t Agency). In this document, the word lake is used as a generic term for standing waters including natural lakes, reservoirs, excavated pits and other artificial water bodies. The Guidance standard for assessing the hydromorphological features of lakes (EN 16039) describes a protocol for survey (fie
29、ld and remote sensing methods) and feature recording, whereas this standard gives guidance on assessing the condition of those features, and focuses especially on human pressures that affect lakes. This standard has applications for nature conservation, environmental impact assessment, lake manageme
30、nt, and guiding lake restoration work. The assessment of lake quality in Europe has evolved over the past decades from its focus on chemical conditions to a more comprehensive ecological approach. The EC Water Framework Directive (WFD) has reinforced the need for this broader view of lake quality th
31、rough its requirement for determining ecological status based on phytoplankton, phytobenthos, macrophytes, invertebrates and fish. The Directive also requires hydromorphological and physico-chemical conditions to be suitable for supporting biological communities. This standard, therefore, may be hel
32、pful for implementing the WFD when indicating the extent to which pressures might have caused a departure from natural hydromorphological conditions. In doing so it complements methods that have been developed within particular countries for assessment and reporting under the WFD. However, this stan
33、dard makes no links between hydromorphology and biology, nor does it set any hydromorphological condition targets that should be achieved. Whereas decisions on management for individual lakes require expert local knowledge and vary according to lake type, this standard provides a framework to help t
34、hose decisions to be made consistently. DIN EN 16870:2017-05 EN 16870:2017 (E) 6 1 Scope This European Standard provides guidance on determining the degree of modification of lake hydromorphological features described in EN 16039. It enables consistent comparisons of hydromorphology between lakes wi
35、thin a country and between different countries in Europe, providing a method for broad based characterization across a wide spectrum of hydromorphological modification. Its primary aim is to assess departure from naturalness for a given type of lake as a result of human pressures, and it suggests su
36、itable sources of information that may contribute to characterizing the degree of modification of hydromorphological features. For wholly artificial lakes or reservoirs formed by damming rivers the aim is to assess the extent to which processes approximate to those in comparable natural water bodies
37、. However, this standard does not replace methods that have been developed within particular countries for local assessment and reporting. Decisions on management for individual lakes require expert local knowledge and vary according to lake type. The assessment of the hydromorphological conditions
38、as needed for the WFD (supporting the biological quality elements) remains in the competence of the individual Member States. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated referenc
39、es, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 15843:2010, Water quality - Guidance standard on determining the degree of modification of river hydromorphology EN 16039:2011, Water quality - Guidance st
40、andard on assessing the hydromorphological features of lakes 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 bank physical edge of the lake shore, or of the island(s) within, generally defined by a wave-cut break in slope at or near the water
41、s edge of the lake, but can also be defined as the line along which riparian (terrestrial or land) conditions change to littoral in-lake conditions SOURCE: EN 16039:2011, definition 3.3 3.2 bar discrete, natural, depositional feature with shallow slope into water composed of unconsolidated material
42、3.3 bathymetry systematic survey of size, shape and water depth distribution in a lake Note 1 to entry: Bathymetry is the basis of deriving morphometric parameters and to predict thermal stratification, residence time and sediment redistribution processes. SOURCE: EN 16039:2011, definition 3.5 DIN E
43、N 16870:2017-05 EN 16870:2017 (E) 7 3.4 catchment drainage basin contributing water and sediment into a lake (also recognized as drainage area) SOURCE: EN 16039:2011, definition 3.10 3.5 connectivity continuity uninterrupted movement of water, sediment and organisms into, out of and within a lake sy
44、stem SOURCE: EN 16039:2011, definition 3.11 3.6 drawdown lowering of lake levels caused by deliberate water release 3.7 dune underwater ridge formed by wave or current action on the lake bed 3.8 ecological status expression of the quality of the structure and functioning of aquatic ecosystems, by co
45、mparing the prevailing conditions with reference conditions Note 1 to entry: As classified in accordance with Annex V of the EC Water Framework Directive. 3.9 embeddedness extent to which fine sediment infiltrates littoral gravels 3.10 gauging board staff gauge graduated scale, fixed to a lake outle
46、t or inflow structure, or directly into the substrate, used to measure the water level in a lake 3.11 geotextile permeable fabric often used to reinforce or protect banks 3.12 groundwater table surface of a body of underground water below which the soil or rocks are permanently saturated with water
47、3.13 hard engineering stabilization of the shoreline using hard materials including concrete walls, gabion baskets and sheet piling DIN EN 16870:2017-05 EN 16870:2017 (E) 8 3.14 hydromorphology physical and hydrological characteristics of lakes including the underlying physical processes from which
48、they result SOURCE: EN 16039:2011, definition 3.22 3.15 island landform protruding from the surface of a lake SOURCE: EN 16039:2011, definition 3.26 3.16 lake stratification variations in water column structure with respect to temperature and density SOURCE: EN 16039:2011, definition 3.30 3.17 litto
49、ral zone habitat extending from the waters edge to the lakeward limit of rooted macrophytes or algae on the lake bed SOURCE: EN 16039:2011, definition 3.33 3.18 pelagic zone open water zone extending from the littoral zone towards the centre of a lake SOURCE: EN 16039:2011, definition 3.41 3.19 planform view of lake shape from above, e.g. elongate, circular, etc., and also relevant in relation to the shorelin
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