A郎断of t t i s† oν of M⑬∩∩◎ i にoルl onnol ke con be nghi l y sol d」 opOni sl orgesi reseFν ′oi r f o「 i rr i go」on purposes cl nc i l

scl i d t t i 4/os f i rsi consi ruct t ed i n i he Tci hO ercl i be十 νveen 701- 704AD) byヽ 4i Chi m9ri

Ason′ Lord of Sgrl ∪ ki ( l odCyi s Ko9oM/O Pref ect t ure) . HOWever′ l i ヽへ/os desi royec Oy :

i oodsi n l he 9輛 yeor ofヤhe Koni n ero{818 AD) by 100d Woi ers ond Mi chい ol Ⅲ 9や汁01cl n emi sScl ry di spCi Ched by t he l mpenol Cout t begon reconst t ruc‖ o∩ b∪ |

encouni ered rnonpё へヽ/er ond i echni ccl l di f f i c∪ けi es.

Subseq∪ eni l y′ cl i t he behesi of Lord Kl yOhOro― no―Noi s∪no i n

i he 12t h yeor of i he Koni n ero 1821 AD)十 he f cmous B∪ ddhi Si

monk K∪ kQi {Or Kobo Doi shi who wOs o百 gi nol l y f rom i he

OreO)WCI S Senl l O OVersee t t he reconsl 「 ucl i on. ∪ nder hi s

supeへ 4si on′ usi ハ g i echni ques consl 「 ∪c‖ on he si udi ed i ∩

T' cl ng Dynosi y Chi noヽ ハ/cl S COmpl el ed i n l ess i hon 3 rnoni hs

i he l G「 9e l oke′ cl pproズmcl i el y 8. 25 km i n cl recl ヽ ″ os

compl el ed.As cl rewcl rd f orsuch i ne、 A/ork l he i mpenol COur1 0、 へ/orded

KukQi 20′ 000 COpper pl eces wi t t h ν/hi ch he esi cl bl i shed

Konnol i l empl e on t t he cousewcl y by t he l oke.

l n i he f o‖ oヽへ/1ng yeor_q l he l cl ke b∪ i l l by K∪ kol 、 /、′os domoged ond reb∪ i l 十 rnony t t i mes

bl 」 i cl i t t he begi nni n9 of i he( 3enrycl ku ero( 1184 AD) l i ヽ νOS desi royed by f l ood

wol es ond due tO di sヤ urbcnces of i he Kcl mok∪ ro ond i he Age of Ci vi l Wor′ l he l oke

f el l i nt o o si Ol e of negl ec十 . 「or cl boui 450 yeors un十 11′ i n i he 2nd yeor of t t he Kcl nl ei ero

( 1625 AD) ′ Lord l korno of Scl nuki oppoi ni ed cl vossol expert i n ci vi l engi neet t ng′ one

Ni sh」 i mO HOChi bee十o rebui l d i he reservoi r . ヽ ハ√hen compl ei ed l n 1631 AD′ i heヽプvoi er

f rom t he resen/oi r i 「 i gcl l ed t t he f i el ds of 44 vi l l oges i n 3 couni l es.

Af l er t t hcl i ′ 十he l cl kei s wcl ‖ wcl s onCe Cl goi n breoched

du百ng i he grecl i eot t hquoke i n l he f i rst t yeori he

Ansei ercl ( 1854) .

VVi t t h suppot t f romハムoi suZCl t t Shi b∪ emon′ Governor

of Tokomot su Provi nce′ l he wei r wos reconsi r∪ ct ed

by t he hecl dmcl n of Enoi Vi l l oge Hcl sego、 ′ヽo soi orO

bei ∩ 9 compl ei ed i n l he 3rd yeor of i he Mel i l er9

( 1870) . :

Lo十 er′ i n i he 381h yecl r of t heヽ 4el i Pet tOd( 1905) ′ l he 10ke、″ cl Hヽ へ/osroi sed by o. 87

mei resondi ni he3rdyecl rof t heToi shOPet t od i 1914) o‖ l he SI∪ i ces were reb∪ ‖i ヽハ41h

concrel e ond gron計 0 0nd o bnCk woi er― i ni oke l ower. Howeveri he i ncreoSi ng

del η ond i ori rngo― i 。∩l eod t t o f Urrherroi si ng of l he l oke wcl ‖ l n 1929 by l . 51 rnei reS

ond o9ol ni n mol or WOrksf rom 1942 by onol her6 mei res. WOrks were dbrupl ed byt he ef f eci s of VN/ond WortwO f rom 1945∪ ni i 1 1 946′ i nG‖ y bei ng compl el ed i p i he

341h yeor of t he ShOヽ へ/Q Pet t od( 1959) When t he l oke csSumed i i preseni Si Ze ond

si r∪ c十∪re hol di ng obot l i 15, 4 rni l l l on cubi c rl neヤ res of wol er.

St at t ue of Kukci ( KObO DCi Shi 〕

しO① ondS10f ‐ M◎ ‐n∩Oi keLi ke rnony ol he「 hi si o百 c pl oces′ l here cl re rnony si ot t es ossoci ol ed v宙 l hハスonnol ke.

AmOい OSl i cl l ё s f rom i he pasi cl nd t t he preseni ′ one i s i he l ё gё : nd of t t he Drcl gon of

Monnol ke.

ハl ong l i 中 e Og。 ′ l he OFOgOn i ぃ ol l veC i り l he 10keヽへ/os eni oソ i l g sunl ni ng hi rnsel f i n

i hё di SOUi Se Of O Smo‖ snoke. Thol dOy o Tenou( cl 10ng noSed gobl l n) f rom t he

l こ】nd of t t umi l i n preseni dOy Shi 9o Pref eci u「 e) ′ di s( j Ui Sed os o kl 十 e oncJ secrchi ng

f Or prey′ spl ed l he smcl l l snoke o∩ d copi ut t n9 i l ′ i ook i l bcl ck l o十 he gObl i r l i s den i n

9916+l o of Hi roson mo∪ n十oi n i n t t umi cnd l hrew i he l i l i l e shoke i n o coge.

Orl ce o9ci ∩ l he l engu sel c∪ i l ooki no f ori η Ore prey ond t hl s i i me′ f l yi ng over

Kyol o spl ed o young pri esi . Copl ut t ng hi m′ he bro∪ ghi hi n∩ bcl ck i o hi s groi t o

″ヽ l nere he i rnpt t soned hi rn i n i he some coge、 ハ, 4i h l he smo‖ sncl ke bef ore t t yi ng of f

ogoi n, Noヽ ″ 十he yo∪ ng pt t esi v/cl sl ucky eno∪ 9h l o si i ‖ hoveぃイl h hi n■ o smol l Ⅵ/Ql er

bo廿 i e. Seei ng hi s f e‖ oヽハ/p百 sOnerl ooked i ∪ si OS t t hi rsi y′ he ki ndl y 9ove i he smo‖

snoke o dt t nk. Whenく l he smo‖ snoke hod d口」nk hi s f i l l he begcn t o l 「 onsf o「 rFa bOck

i ∩ l o hi s i 「 ∪e f orrn cl nd i n doi ng so l ore opot t he coge ond f reed i he young p百 esi .

He i hen f l e、″ cl f t er l he l eng∪ whi ch wos ogoi n up t t o no 9ood i n t t he ci t t y of Kyoi o

He f o∪ nd i he l eng∪ i here′ mi schi evo∪ sl y di sg∪ i sed os o rnonk ond′ i キ i s sci d′ coc‖ y

l i SpOt t Ched l heヽノVrei Ched crect t Ll re. ( Al so i t i s sci d i hGIぃ ′hen o gOvernor hod† he

embOnkment tOf l hel cke i oken down c h∪ ge orl e rnel erl ong c9rp emerged′

f uel l i ng i he rnyl h of i he d「 cl gon of i ッ i cl nnQi ke)

、4onnol ke f rom t t he oL l ooki ng t t owGrds i he nort h、 へ/es十 .

Tai ho Era

9t h Vear of ● e Konl n Era

12t h Year of t hё Koni h Era

l ま Yt ar of t he Ni ni u[ ra

2nd- 3rd Ye: 「 ol モドe Ni dむEra

l st Yoar oi t hё GenryakuEra

5t h- 8t h Year of t hё Kal l ' ei

Era

2nd～ 6t h Year of ■ e Kbё i

Era

l st Year of t he Ansei Era

2nd～ 3rd Year of t he MeJEra

31st Year of t he Meり I Era

38t h- 39t h Year of t heMej i Era

3rd Year of t heTai shO Era

2- 5t h Year of t he ShowaEra

1 5t h- 34t h Year of t heShowa Era

28t h ‐ 4at h Year of t heShOwa Era

A t t i stOncal summary of Mannoi ke

Lordヽ41chi l mori of Sanuki cOnst ruct s t he f rst recordcd di ke i n vvhat i s nowv t he卜Лann。 l ke brea

wat ers dest roy t he reserVoi r

, an el ni ssat t di spat ched by t he l mperi al Cout t began redonst ruct i oi bt t t en66しnt erddi n J 」 l y t o over, ee t h91 ・ues. subsequent l yt慟 e f amous Kukal ( or Kobo Dai shD i s sent

onst ruct i bn whi ch i s cOmpl et ed i n」 uSt 2 monthS

Aut umn of t hi s year, 100ds agai n dest roy t he reserVoi r ,

Lord Hi rol mune of Sanuki begi ns reconst ruct i on t hat i s compl et ed i n nt arch of t he f o‖ oWi ng yea■:

C6nst ruct i on i nvoi ves 1 9, 800 1abourers usi ng 1 20, 000 Hce st raw bundl os and 68, 000 reed l ! : o bt t Ls_

o, May l st , t he reseⅣ O・ rた Once agJ n dest royed by Лoodi ng. At er慟 卜: d● H, g■ | 1甲9kul l ■ 10d

漁電貴計ピl 翼糧繁: 「嗜廿濯』篭[精L: : 諮: 網点1: 雷 t i : J ∬よ: 市凛葛:

t he v‖ l age t hus f orm ed i s known as l keuchi ―品ura Ci t t he V‖ l age i h t he l さ ke) .

化しF t hざ 意ni [ ё at i on Of」 apan by Shot t n Toyot orri Hi deyoshL peaё e ё o議 es tO■ e l and: ' DI ■ hξ ま し

gn of ■ e sh。 まnTokugawa i emt su, t l l e Lord of Sanu綺 , Takat osh, t he 4t h brd df t h H6饉 sl of

l k6品a i nst ruct s one of hL vassaに , Ni shj i ma Hachi bee t o rebund t he reseⅣ o「 l he Wat er f ronl t ho

esb～。i l l was suppl i ed t o 3 count i es compri si ng 44 vi l l ages t t at produced 35, 31 4bLI Shel s of ri ce5300 t ons) per year Thi s was 1/6t h of t he yi el d of t he Sanuki Fi ef

At t hi S t i me t he si ui ceways were const ruot ed' om wood So t hat even af t er recOnst ruot i On work i n 8t hOf t hd Ansei peri od, t he l o・ ■ver si ui ceway was repl aced 6 t i rnes whi l e t he vert l cal sl ui ce、 vays were

12 t i mes Subsequent l y, t he t i mber i n t he l ower sl ui ces vvas repl aCed by st dnel

t hё n 9t h of」 ul y a massi Ve eart hquake damages t he l ower sl ui oeway dest oVi ng■ e Wei 「

s arё del ayed by t he dた order of t he f a‖ of t he t tOkugawa Shogunat e resuhi ng h■ 9 heal ml h l f6ne Hasegawa Yoshi he」 L usi ng hi s own f unds t o rest ore Mannoi ke unt ‖ hi s dbat h市 i dway t hr6」gh

st ruct i on.

i t h suppo潰 什o― l Mat suzaki shi buer10n of Takamat su Provi nt e and Counc‖ or Shi mada Yasu6 of

851

852～ 853

1849- 1853

1854

1869- 1870

1914

1927- 1980

1940～ 1959

1953- 1969

Pref eot ure, he we「 was reconst ruded t hrough t he ef ort s t hen End Ⅲl hge l ead甲甲 ,

Haもしgawa Sat aro and i Zumi Torat aro of Konz可 i Templ e.

た もヽ■mO, t he i arge rock f ormat i on h t he West ern cOrner of t he wdr was dH‖ ed t 6 maドel ● ewl o"ё r sl ui t eway. :( wat er i ored: 5_3 mⅢ i onぶ 、l abourers requレed: 144, 900、 tot al const ruc■ on cb壼 1, 073 yen)

The vert i oal J ui ce― pわeS and t he scaro旧いg t owers are repJ red( t oね l oonst ruoも on oo■ : 197390yc

l rst works t o hcrease t he heい t of he wdr( by 087m) as wen as i mprovement s t ● 慟, Sp‖ VVoy,

carri ed out i l

( watま―st。 l ed: 6. 6m‖ けonボ 、t ot J const t uci on cost 16, 761yen)

The Ⅵ, at er t ov′ er i s bui l t ( t ot al cOnst ruCt i On cost

Tht seる。hd rai si ng of t he hei eわ t of t he wei r( 1. 5m) I S: wen as t he。。nst rudt i ch of a new cat ё hmentcanal ( 400m) t o t t e saLagawa are carri ed out by Prl f e“ ut t al works( Wat er stOred 7 3 1i l l i onバ ,

tOt al も6nst ruct i on cOst : 428, 700yen) , 、

Du百 ng t he Great Drbut t t i n t hel 14t h year t he Showa Era( 1989) , t he ol pOrt uni ″ i も 、aken t。ul dert akё Prei ct ural works t o devat e t he we卜 おr a t h「 d J me t o 6 met ers and t o c6, st t t Ct t hl

Aqueduct ( 4, 668m) t o t ake wat er f rom t he Doki gawa, t here by 10ub‖ ng t he ct t paci ― y of

i ke t o 15. 4m‖ ‖on cubi c rnet ers. ( t ot al const ruct i on cost 543, 327 t hoし もand yen)

。i ncrease t he ef recuve ut i nsaJ on of t he wder drawn i om Mannoi ke, specね I PFet t t ural w。「kS t ё

t he banks of t he Kanakuraga■ a are carri ed out ( t ot al const ruct i on cosモ : 639, 122 t houSand

① Area of Di sき i buせ on

A Summa7 Mannoi ke St at t sづ cs/満 濃 池 概 要

2 Ci t i es. 3 Towns 2, 735ha Coopemt i ve rnernbershi p 7. 515 pe嘔 。ns

Ci でノ/Town Name i vl engame Ci ″ 乙 はS可 G" I Lお おu ToWn Kot ohi ra TOwn Manno Town

Area recei vi ● g supp y 645 ha 864 ha 1 371 ha 1 259 ha 596 ha

② Present cond面 on

Forl nal Desct t pt on Arch― shaped Eal ■ hen Di ke

Hei ght 32 0m

Lenまh 15580m

Vol ume of wt t er cont aned 15, 400, 000ボ

Reseぃ ′oi r Area 138 5ha

Di rect Run― oF Area l , 280ha

「

e EI降

剣

淵 ] …

鵡 OT Area銅」 薦 驚

a

… EI I Xam磁 〕t er l nt ake Tower and Sl ui ceway

[ Wt t er l nt ake Tower] Hei ghし 30m Di amet er of f oundaJ onsl 1 2● Di amet er ofお wer base: 74m Di amet er at t ower t op: 64m

i nt ernal di amet er5m Di amet er of suct i on pi pes: 08m Numbor of suc■ on Oi pes: 8

[ Lower sl ui ceway] Et t enSi On: 197m i ncHne: 1/100 Cross― seCt i On・・f i dt h: 12m Hei ght : 15m

Des。●pt i on: Tunnei sl ui cewav Peak wat er■ ow per second: 5ボ

③ Cat chment Area and Ava‖ aЫ e Wat er

Di 宙sl on Area Amount of r_i n亀‖ Di scharge rat e A"oし nt of av二 J ao e wat er

Cat chment Area 3. 000ha 191. l mm 30% 1, 719, 900ri

④ Cat chment Amount s f or Mannoi ke by Source

Di И si on Area Amount of rai nね‖ Di scharge rat e Cat chrrent Amount s

Mannoi ke Di rect Run― of Area 1. 280ha 664 6rnm 4253. 440rf

Sai t agawa Di rect Run―o「 Area 1, 230ha 664 6rrm 50%( harvest rat e 35%) 1, 430, 551耐

Suppl ement arv Source Korobi shi 6, 700ha 1. 998. 146r

Amount sDoki gawa 680ha 7. 717, 863ボ

Tot al s 9, 800ha 15, 400. 000ni

「すｏき一”ｏつｏ一オｏ」●ヽ”ｏつ″ω戸ｏ●

ｏヽくｏう”ｏＯコＦＦＯ．「ｏ

，”」ｏ「十一一ヽ●Ｏｏコ

（口く力「塑げｏＣ