Title Destructive Effects of the Estuary Dam on the Nagara River's
Destructive Effects of the Estuary Dam on the Nagara River's Title Environment, and the Program for its Regeneration Author(s) 粕谷, 志郎; 村瀬, 惣一; 青山, 己織 Citation [岐阜大学地域科学部研究報告] no.[20] p.[1]-[22] Issue Date 2007-02-28 Rights 岐阜大学地域科学部 (Faculty of Regional Studies, Gifu Version University) / リバーポリシーネットワーク(NPO) (River Policy Network(NPO)) URL http://hdl.handle.net/20.500.12099/15555 ※この資料の著作権は、各資料の著者・学協会・出版社等に帰属します。 BulletinoftheFaculyofRegionalStudies,GifuUniversityVol.20:1-22.(2007) DestructiveE恥ctsoftheEstuaryI)amontheNagaraRiver,s Environment,andtheProgram払ritsRegeneration ShiroKasuya,SohichiMuraseandMioriAoyama GifuUniversity,Defunctperson,RiverPolicyNetwork(NPO) (Received:November27,2006) Abstract TheplanOftheNagaraRiverestuarydamwasissuedin1960・Thepurposewasasupplyofthefresh watertoIseBayindustrialarea・Thoughitwastheplanforsupportlngtheeconomicgrowth・aWater demanddrasticallydidnotexpandafterwards,andtheoppositionmovementmainlyonthefisheryparty wasalsointensified・Afterthe一一Anpachifl00ddamage叩in1976,however,thefloodcontroIpurposeof thedamwasemphasized・Theriverbottommustbedredgedinordertorunthefloodsafely・Thesalt waterwillgoup,Whenitwillbesodone,andtheagrlCulturesaltdamagewillbecaused・Estuarydam, whichstopsthis,Callsitthenecessity・Theoppositionmovementonceceases,anditbeganconstruction in1988.It was almost simultaneous,and the new opposition movement mainly on environmental problembecamepopular・However,theoperationwasstartedin1995,Whilethefearoftheadverse effecttotheenvironmentdoesnotfadeaway. Afterwards,thesludgepilesupintheriverbed,benthosessuchastheclamsdisappearalmost,and
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