Outline of Tone Canal Project Incorporated Administrative Agency Japan Water Agency The views expressed in this presentation are the views of the author and do not necessarily reflect the views or policies of ADBI, the Asian Development Bank (ADB), its Board of Directors, or the governments they represent. ADBI does not guarantee the accuracy of the data included in this presentation and accepts no responsibility for any consequences of their use. Terminology used may not necessarily be consistent with ADB official terms. 1.1. OutlineOutline ofof ProjectProject LocationLocation MapMap （（KantoKanto plainplain）） Tone Canal service coverage Tokyo of agri.(29,000ha) Metropolis Altitude Area Water Facility Irrigation 3,000m Paddy 2,000 Drainage 1,000 Uplan 500 Divertion 200 d 0 Residentia Pumpimg l Yagisawa Dam JWA Dam ToneTone CanalCanal ProjectProject Naramata Dam Others Dam Aimata Dam JWA Barrage Sonohara dam OutlineOutline JWA domestic and Industrial Sonohara Dam Canal JWA Irrigational Canal Kusaki Dam Tone river Shimokubo Dam Tone Takizawa Dam Diversion weir Watarase Urayama dam Ara river retarding basin Service Area of domestic water Service area (about 11million people) of agricultural water (29,000ha) Service Area Industrial water 743 Mil m3 of Industrial water Tokyo Domestic, Industrial, (about 370 company) or etc water 1,034 Mil m3 Metropolis TOTAL 1,778 Mil m3 ( per year 2005) Tokyo bay OutlineOutline ofof thethe ToneTone CanalCanal ProjectProject • Tone Canal Project was carried out during 1963 to 1968. • Intake water quantity from Tone river was max 138m3/s （ 134m3/s, nowadays）. 33 PurposePurpose ofof thethe ProjectProject ①① ToTo supplysupply MunicipalMunicipal WaterWater forfor TokyoTokyo metropolitan,metropolitan, SaitamaSaitama andand GunmaGunma prefecture,prefecture, developeddeveloped byby damsdams inin upperupper sitesite ofof ToneTone RiverRiver andand AraAra River.River. ②② ToTo supplysupply IrrigationIrrigation WaterWater stablestable forfor 29,000ha29,000ha paddypaddy fieldfield inin ToneTone RiverRiver middlemiddle reach.reach. ③③ ToTo supplysupply PurgingPurging WaterWater forfor SumidaSumida River.River. 6 Tone Diversion Weir Gyoda water Purification Musashi Plant To Supply Municipal Water Canal for Tokyo and Saitama prefecture. Ara We convey water developed by River Domestic water for dams in upper site of Tone Saitama Pref. Okubo River through Musasi Canal Water Purification Plant and Ara River. Akigase Diversion Weir Asaka Water Purification Plant (Tokyo Metro) “““TokyoTokyoTokyo DesertDesertDesert””” oror “““OlympicOlympicOlympic DroughtDrought”” inin 19641964 Water Shortage of Ogouchi Dam（1964） Water Delivery by National Defense Force Water delivery by water tank car PopulationPopulation growthgrowth andand WaterWater supplysupply capacitycapacity inin TokyoTokyo （103 ｍ3/day） （104 people） 9,000 1,300 8,000 1,100 7,000 Populatin in water supply area 900 6,000 5,000 700 4,000 500 Muximun Water Population 3,000 supply per day Water ammount 300 2,000 1968 100 1,000 Capacity of Tone Canal System water resources Completed 0 -100 1949 1959 1969 1978 Tone Diversion Weir Oura Canal Saitama Canal Kasai Canal To Supply Irrigation Minumadai Canal Water stable for 29,000ha paddy field in Tone River middle Paddy field reach. IrrigationIrrigation waterwaterwater’s’’ss IntakesIntakes UnificationUnification Tone river →river bed down ↓ Unstable intake Link canal Dam up →capable to water intake stable Link canal Tone Diversion Weir Musashi Canal To Supply Tone Ara River’s Surplus River Water for Sumida River’s purification water. Akigase Diversion Weir Shingashi River Sumida River VolumeVolume ofof WaterWater IntakeIntake fromfrom thethe ToneTone BarrageBarrage perper yearyear 100million m3/year ：Municipal ：Purging ：Agriculture 20 15 10 5 0 1965 1967 1969 1971 1973 1975 1977 1979 1981 1983 1985 1987 1989 1991 1993 1995 1997 1999 2001 2003 2005 2.2. ActivitiesActivities RelationshipRelationship ofof JWA,JWA, WaterWater users,users, andand AdministratorAdministrator Administrator of river JWA head office Management Council Maintenance Dep. member management Dam Council on Tone Canal Management office Dam JWA office (Representatives of users) order send send member water report member (Irrigation water) Tone-river request Dams integrated Supervise Tone Canal Council on Intake ManagementMLIT Office water flow Maintenance Unification of Kanto Regional supply Tone River Office water Development ６ Tone-river order Annual order Land Upstream Office Daily report Daily report Improvement send I Districts (MLIT= Ministry of Land, Infrastructure, water Transport and Tourism ) (Municipality water) ４ Akigase and Minuma request Purification Plant branch office Council on water shortage Office ・ supply prefectures Council on Council on member water Water Users Tone-river water Ara-river water member shortage shortage Saitama Canal（Water ammount of intake(m3/s),2006） 30 (m3/ s ) rainfall(mm/day) 250 Intake Water rights 25 200 20 150 15 100 10 Rainfall 50 5 0 123456123456123456123456123456123456 0 mo n t h Ａｐｒｉｌ Ｍａｙ Ｊｕｎｅ Ｊｕｌｙ Ａｕｇｕｓｔ Ｓｅｐｔｅｍｂｅｒ Annual Ammount of wat er 248, 310, 000m3 SupplyingSupplying waterwater forfor usersusers properly,safely,stabilityproperly,safely,stability Refusing dusts in canal Ｃanal Ｇate Operation & Patrol Operation-room (Monitor & Operation) Inspecting gates Inspecting Information equipment MaintenanceMaintenance onon preventingpreventing disasterdisaster Flood time operation in Operation -room Facility Patroling at flood time Oil -fence setting for Water quality accident Flood-time Operation （Full gates open） 3.3. FacilitiesFacilities OverviewOverview ofof thethe FacilitiesFacilities Toneka Meiwa Bando Kitakawaberyo Canal Canal Canal Canal (Toneka Pumping Station)Q=1.910m3/s Ｐ ) (Q=5.111m3/s) Oura Canal Tone River Tone diversion weir Q=134.064m3/s Gyoda Canal Settling Saitama Canal (Q=29.493m3/s) Basin Gyoda Water Purification Plant Hanyuryo Inago Furutone (Q=4.815m3/s) Musashi Canal Kasai Canal Canal Canal Canal (Q=50m3/s) (Q=41.772m3/s) Minumadai Okubo Water Ara River Purification Plant Canal (Q=14.183m3/s) Shingashi River Asaka Canal Akiga Asaka Water Div se Purging water ersion Purification Plant Weir (Q=28.964m3/s) (Q=23.4m3/s) ToneTone DiversionDiversion WeirWeir Upper gate overflow Lower gate underflow Regulating gate To intake water stably, we maintain upstream water level stably by using Regulating gates. SukaSuka SluicewaySluiceway crossingcrossing ofof thethe LeveeLevee We intake expected water stably by using the sluice gates. SettlingSettling basinbasin The very wide Settling basin plays a very important role to maintain water level stable to divide water properly. MusashiMusashi CanalCanal forfor CityCity WaterWater Musashi canal convey city water to metropolitan area. Oura Pumping Station Qmax=5.11m3/s pumpφ900mm×2 Toneka Pumping Station Qmax=1.91m3/s pumpφ700mm×2 IrrigationIrrigation WaterWater (Oura(Oura Canal)Canal) We convey irrigation water and divert by natural water flow. So, we have check gates to maintain water level proper for diversion. FacilitiesFacilities ofof IrrigationIrrigation CanalCanal Diversion works and Branch canal. Small diversion works OperationOperation roomroom Graphic panel in the control room helps the operator to monitor the intake condition and the water distribution of the canals. We can tell-control each gate of main points of facility. InformationInformation processingprocessing equipmentequipment roomroom The computer system captures, stores, processes and displays a large amount of data, such as water levels, gate status, and flow volume, which are gathered at and transmitted from observation points. Radio room Radio system send and gather data to the relative bodies and from Radio steel tower each observation points. Water control device Gate of Canal Gate control, water level-flow observatory 4.4. ActivitiesActivities forfor environmentenvironment andand ecologyecology （（ ImprovementImprovement fishwaysfishways ofof BarrageBarrage）） Tone Diversion Wier No.3 Fishways No.2 Fishways Downstream No.1 Fishways bed protection works ImprovementImprovement ofof fishwaysfishways After Let fish know the Improvement “Entrance is here!!” Strong flow Resting area Old Type (Too rapid for fish to swim up the flow) MainMain TargetTarget FishFish Ayu … a migratory species indigenous Japan Salmon female male NumberNumber ofof SalmonSalmon byby yearsyears throughthrough fishwaysfishways ofof ToneTone WierWier 6,000 5,606 5,800 5,600 Fish age (1989～2004 集計平均） 5,400 不明魚 ２年魚 ６年魚 5,200 4.6% 3.4% ３年魚 5,000 ５年魚 4,769 0.0% 24.5% 4,800 16.9% 4,600 4,400 4,200 4,000 3,800 ４年魚 3,600 50.6% 遡 3,400 3,215 3,200 ２年魚 ３年魚 ４年魚 ５年魚 ６年魚 不明魚 上 3,000 2,800 数 2,600 2,400 2,283 2,200 Fish way 2,000 1,800 Improvement 1,515 1,600 1,266 1,400 1,090 1,200 1,000 733 729 608 662 800 516 600 258 261 259 211 194 311 400 21 35 45 96 82 200 121 117 133 0 3 4 5 6 7 8 9 0 1 3 4 5 6 8 9 0 1 2 3 4 5 6 7 08 99 99 198 198 198 198 198 198 198 199 199 1992 1 199 199 199 1997 1 199 200 200 200 200 200 200 200 200 20 Tone Diversion Weir Water level-flow Sediment flushing gate Flood gate No.1 fishways observatory Regulating gate Gunma Prefecture Saitama Prefecture Tone Diversion Weir Intake crest Suka利根大堰 Sluceway Weir crest length:691.7m Intake crest length:124.8m No.of sluiceways:3main,3sub No.of gates:12 Max.water intake: Sub-flood gates of Sluiceway To intake water stably,we maintain 134.064m3/s are automatic control to upstream water level stably by using (Municipal Water,Irrigation regulate water level of