Local Environment Agency Plan
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local environment agency plan RIVER DART CONSULTATION REPORT JUNE 1997 Foreword The River Dart Local Environment Agency Plan (LEAP) aims to promote integrated environmental management of this important area of Devon. It seeks to develop partnerships with a wide range of organisations and individuals who have a role to play in the management of the River Dart. This plan embodies the Agency’s commitment to realise improvements to the environment. An important stage in the production of the plans is a period of public consultation. This Consultation Report is being circulated widely both within and outside of the catchment and we are keen to draw on the expertise and interests of the local communities involved. Please comment - your views are important, even if it is to say that you think particular issues are necessary or that you support the plan. Following on from the Consultation Report an Action Plan will be produced with an agreed programme for the future protection and enhancement of this much loved area. We will use these Plans to ensure that improvements in the local environment are achieved. CEOFF BATEMAN Area Manager (Devon) Environment Agency Information Centre H a s h River Dart LEAP Consultation Report Page Your Views We hope that this report will be read by everyone who has an interest in the environment of the River Dart Catchment. Your views will help us finalise the Action Plan. Have we identified all the problems in the catchment? If not, we would like to know. Are there any issues which you would like to highlight? Please fill in the questionnaire provided and send your comments by Friday 17 October 1997 to: Richard Parker Environment Planner - Devon Area Manley House Kestrel Way EXETER Devon EX2 7LQ We will not republish this Consultation Report. Environment Agency Copyright Waiver This report is intended to be used widely and maybe quoted, copied or reproduced in any way, provided that the extracts are not quoted out of context and that due acknowledgement is given to the Environment Agency. Published |une 1997. Page ii River Dart LEAP Consultation Report CONTENTS 1. INTRODUCTION................................................. .................. ......................................................................................................................4 1.1 T he E n v ir o n m e n t A g e n c y -..................................................................................................................................................................................................................4 1 .2 Lo c a l En v ir o n m e n t a g e n c y Pla n s ...............................................................................................................................................................................................6 2. THE CATCHMENT A REA ..................................................................................................................................................... 7................11 2.1 G e o l o g y . ...............................: ...................................................: . .................................................................................. ./.................................................................... 15 2 .2 Hydrogeology ..........................................................................................................................................................................................................................................15 2 .3 Ra in f a l l ....................................................................................................................................................... ............................................................ ............................ 15 2 .4 River Fl o w ................: ...................................................................................................................................................................................................................................15 2 .5 W ater Q u a l it y ............................................................................................................................................................................................................................................1 7 2 .6 L a n d s c a p e ..................................................................................................................................................................................................................................................... 17 2 .7 A r c h a e o l o g y ..............................................................................................................................................................................................................................................19 3. OUR PROPOSED TARGETS FOR RIVER WATER Q UALITY............................................................................................... 23 3.1 Pr o po sa ls fo r R Q O s fo r th e D art C a t c h m e n t ...............................................................................................................'.........................................23 4. ISSUES AND PROPOSED ACTIONS..................................................................................................................................................25 4.1 Pro blem s A s s o c ia t e d w ith D e v e lo p m e n t ............................................................................................................................................................................25 4 .2 C o n c er n s O ver A b a n d o n ed M in e s ......................................................................................................................................................................................... 27 4 .3 T he Im p a c t o f M in era l Ex t r a c t io n .........................................................................................................................................................................................2 8 4 .4 C o n c er n s O ver L o w Fl o w s ............................................................................................................................................................................................................29 4 .5 Im p a c t o f Efflu en t D is c h a r g e s ....................................................................................................................................................................................................30 . 4 .6 C o n c er n s O ver Efflu en t D isch arg es in t h e V ic in it y o f th e D art Estu a r y Shellfishery...............................................................35 4 .7 Po t e n t ia l Eutrophication of th e D art Es t u a r y ................................................................................................*..........................................................35 4 .8 Risk o f C ryptosporidium En ter in g Pu blic W ater Su p p l y ................................................................................................ ....................................36 4 .9 Im p a c t o f Fa r m in g a n d Fo restry o n Rivers a n d W e t l a n d s ................................................................................................................................ 37 4 .1 0 A cidification of D a r t m o o r ........................................................................ : ................................................................. ..........................................................39 4.11 Lack o f C u rren t In fo r m a tio n o n t h e N a tu r a l En v ir o n m e n t ......................................................................................................................41' 4 .1 2 Furth er T hreats t o K ey C a t c h m en t Ha bita ts a n d S p e c ie s ................................................................................................................................ 42 4 .1 3 Spread o f In va siv e Ba n k sid e Pla n t s ...................................................................................................................................................................................... 43 4 .1 4 Lac k o f In fo r m a t io n o n A rchaeological/H isto r ic V alu e o f th e C a t c h m e n t .................. ............................................................44 4 .1 5 Barriers t o Fish m ig r a t io n ......................................................................................................................................................................................................... 45 4 .1 6 Risk o f O v er -exploitation of t h e Sa l m o n Fis h e r y ...................................................................................................................................................47 4 .1 7 A d d it io n a l T h rea ts t o Fish St o c k s .....................................................................................................................................................................................49 4 .1 8 C o n c er n s w ith th e Recreational U se o f th e C a t c h m e n t ................................................................................................................................ 49 4 .1 9 C o n c e r n s O ver t h e U se o f A n t i-fo u lin g Pa in t s o n B o a t s ...............................................................................................................................51