Horikawa Sen-nin Chosatai 2010 - horikawa1000nin.jpHorikawa. Sen-nin. Chosatai. 2010 (Horikawa....

1

Summary Meeting for the Summary Meeting for the 99ththStageStage((April April 11stst～～June 30June 30thth

20201111））

HorikawaHorikawa SenSen--ninnin

ChosataiChosatai 20102010

((HorikawaHorikawa

River ThousandRiver Thousand--Citizen Survey Network 2010)Citizen Survey Network 2010)

Horikawa SenHorikawa Sen--nin Chosatai 2010 Secretariatnin Chosatai 2010 Secretariat

Sep. 10Sep. 10thth

20112011

Horikawa

River Pilot Project ～Tｒａｎｓｍｉｓｓｉｏｎ

of raw water from Kiso

River (TRWKR) ～

2. Water source and Volume of transmission of raw water(1)Water source

Kiso River : Kiso River system (first grade river)

(2)Volume of transmission of raw waterMaximum 0.4 m3/s

3. Pilot project period(1)Evaluation and Survey term: about 5years（From Apr .2007 to Mar.2012）

(including term of account ,survey after stopping TRWKR)

(2)TRWKR period : about 3years（From Apr.22nd

2007 to Mar.22nd

2010）

(1)Develop a new clarifying policy(2)Catch effects on ecosystem(3)Sustain and enhance citizens activity (4)Progress of citizens

awareness

1.Purpose:To inspect the clarification effects by TRWKR with citizen's.

Horikawa Sen-nin Chosatai (HSC)2010

■The formation of Horikawa

Sen-nin

Chosatai

(HSC)

（April 22nd, 2007）

With a viewpoint and a sense of citizens, the survey of clarification effect by TWRKR started.

The survey with a viewpoint and a sense of citizens・clearness ・transparency ・color ・bubble ・smell ・garbage ・living things etc.

■Fixed Point Observation GroupsWe are surveying the effect of pilot project about Horikawa

River clarification．

■Free Survey GroupsWe are making studies of Horikawa

River ｉn any themes！

■Horikawa

Cheering Groups

We are supporting for Horikawa

River clarification

!

★Confirm the effect of clarification★Sustain and enhance citizens activity

★Progress of citizens awareness

★Confirm the effect of clarification★Sustain and enhance citizens activity

★Progress of citizens awareness

Number of Participants of Horikawa Sen-nin

Chosatai

2010

Horikawa

Sen-nin

Chosatai

started accepting participation on March 26th

,2007

Apr. 22nd

2007 Sep. 6th

2011

Fixed Point Observation Groups

55Groups, 497Citizen

90Groups,

900Citizens

Free Survey Groups 22Groups, 234Citizen

38Groups,

639Citizens

Horikawa

Cheering

Groups88Groups, 1,531Citizen

2137Groups, 15,323citizens

Total 165Groups, 2,262Citizen

2265Groups,

16,862Citizens

mailto:[email protected]

Number

1st stage Spring - Early summer /April 22nd to June 30th 2007 258

July 1st to September 7th 2007 134

2nd stage Autumn - Early winter /September 8th to December 16th 2007 383

December 17th 2007 to March 31st 008 103

3rd stage Spring - Early summer /April 1st to June 30th 2008 245


4th stage Autumn - Early winter /September 28th to December 16th 2008 152


5th stage Spring - Early summer /April 1st to June 30th 2009 145









Total 2282

Survey Period

Survey Period and the Number of Reports


Transmission of Raw Water from Kiso

River

（TRWKR）

■TRWKR：

0.4m3/s

■TRWKR period :

From Apr.22nd

2007 to Mar.22nd

2010

Nagoya Port

JR Tokaido

shinkansen

Kizaemon

Bridge

Koshin

Bridge

Horikawa

Tide Gate

Oto

Bridge

Oseko

Bridge

Naya

Bridge

Shinsuzaki

Bridge

Matsushige

Bridge

Shin

-horika

wa

Rive

r

JR・Meitetsu

line

Nagoya

Sta

tion

Asahi

Bridge

Kiso

River InuyamaNaruto

Nagoya Castle

Kitashimizu

Bridge

Meijo

Water Treatment Center

DaikoRiverTrunk Line

Nabeyaueno

Water Purification plant

Jouhoku

Bridge

Shonai

River

Yada

River

Shonai

irigation

weir

Sanage

Bridge

Provisional raw water Transmission from Shonai

River

Motoiri

Sliceway

Raw water transmission route for Pilot project

Existin

g a

queduct

Matsushige

Lock Gate

Naka

gaw

a C

anal

Horika

wa

Rive

r

Transmission of Raw Water from Kiso

River(TRWKR)

Injection point：The downstream section below Sanage

bridge on Horikawa

River

The View around the Inuyama

Intake of Kiso

River

Sanage

Bridge

Daikou

river trunk line


Results of TRWKR

Survey PeriodDays of Period

Days of TRWKR(％：Days of Period/

Days of TRWKR×100)

1st

StageApril 22nd

2007～June 30th

200770 52(74%)

Interval 69 41

2nd

StageSeptember 8th

2007～December 16th

2007100 84(84%)

Interval 106 86

3rd

StageApril 1st

2008～June 30th

200891 81(89%)

Interval 89 39

4th

StageSeptember 28th


200880 50(63%)

Interval 105 93

5th

StageApril 1st

2009～June 30th

200991 82(90%)

Interval 88 63

6th

StageSeptember 27th


200981 60(74%)

Interval（Until the stop of TRWKR）December 17th

2009～March 22nd

201096 92

Total 1,066 823(77%)

Note) Days which a little raw water was transmitted are also counted in “Days of TRWKR”

Period：April 22nd

2007～March 22nd

2010


Experiment of increasing flow of raw water from Shonai

River

(extra experiment)

1.Water source and Volume

of transmission of raw water

(1)Water sourceShonai

River : Shonai

River system (1st grade river)(2)Volume of transmission of raw water

maximum

0.7

m3/s

(Increasing flow

volume 0.4

m3/s)

2.the term of increasing flow(1)the term of experiment : Oct. 1st

to Dec 31st

2010(2)the term of increasing flow : Oct. 5th

to Nov. 2nd

2010

The 9th

Stage

■

We investigated the

water quality of Horikawa

River without TRWKR

in

Spring

and

early Summer.

Jun. 30th

to

Apr. 1st

2011

Increase of transmission of raw water from Shonai

River

MonthThe number of days of

increasing flow of raw water†

October 27 days

November 2 days

Total 29 days

†)

Days are counted when the increase of transmission was measured.

■

Transmission of raw water from Shoai

River :

0.3m3/s→0.7m3/s （＋0.4m3/s )■

The term of increasing flow : Oct. 5th

to Nov. 2nd

2010

No Increase Case Increase Case

Result


Summary of survey (after TRWKR to the 9th

stage)

It was confirmed that• The water quality tends to be improved during TRWKR (1st

to 6th

stage).

• The water quality tends to be deteriorated after the stop of TRWKR (7th

to 9th

stage) in some spans.

• The TRWKR effected to clarify of water quality.

1st. 3st. 5st. 7st. 9st.

2st. 4st. 6st. 8st.

TRWKR (0.4m3/s)

Increase of raw water transmission

from the Shonai River(＋0.4m3/s)

Introduction of advanced watertreatment for the Meijo watertreatment center

Launch of the Horikawa Ugan Rain-water Reservoir for pollution controll

20082007

Measures

201120102009

The main measures of social experiment

①

②

③

④

⑤⑥

凡例

　対策済み区域　建設中の区域

Launch of the advanced water treatment of the Meijo

water treatment center

May 2010

Launch of Horikawa

Ugan

Rain-water Reservoir for pollution controlSep. 2010

Improvement of combined sewer system

Summary of survey (after TRWKR to the 9th

stage)

• It was confirmed that the impression of water deteriorated compared to the term of the TRWKR.

• The number of span the impression of water deteriorated after the TRWKR was less than the 7th stage.

• Distinct deterioration on transparency, COD, babble, smell wasn’t confirmed.

• The advanced water treatment of the Meijo

water treatment

center has launched since 2010.

• The Horikawa

Ugan

Rain-water Reservoir for pollution control

has launched since 2010.

• The quality of raw water transmitted from the Syonai

River has

improved.

※Based on above measures, the deterioration of Horikawa

River water may not be clear.

Results of the 9th

stage


・It was confirmed that the water quality tends to be improved during TRWKR between Sanage

Bridge and Matsushige

Bridge.・It was confirmed that the water quality tends to be deteriorated

after the stop of TRWKR between Sanage

Bridge and Johoku

Bridge, and between Asahi Bridge and Matsushige

Bridge.→In this result, TRWKR was considered to have made good effects between Sanage


Bridge.

○：improvement areas during TRWKR ●：worse than the data during TRWKR －：note compared because the number of data is small(less

than 9)Note）・1st

– 6th

stage ：

TRWKR

・7th

– 9th

stage ：

No TRWKR

Item Koshin Bridge～Oseko Bridge

Oseko Bridge～Matsushige Bridge

Matsushige Bridge～Asahi Bridge

Asahi Bridge～Johoku Bridge

Johoku Bridge～Sanage Bridge column

1st - 6th stage - ○ ○ ○

Comparison of 7th stage with TRWKR period (spring ～ early summer) - ● ● - ●

Comparison of 8th stage with TRWKR period (autumn ～ early winter) - ● -

Comparison of 9th stage with TRWKR period (spring ～ early summer) - ● -

1st - 6th stage - ○ - ○

Comparison of 7th stage with TRWKR period (spring ～ early summer) - ● - ●

Comparison of 8th stage with TRWKR period (autumn ～ early winter) - ● ● - ●

Comparison of 9th stage with TRWKR period (spring ～ early summer) - -

1st - 6th stage - ○ ○ ○

Comparison of 7th stage with TRWKR period (spring ～ early summer) - - ●

Comparison of 8th stage with TRWKR period (autumn ～ early winter) - ● - ●


1st - 6th stage - ○ ○


Comparison of 8th stage with TRWKR period (autumn ～ early winter) - ● - ●


1st - 6th stage - ○ ○


Comparison of 8th stage with TRWKR period (autumn ～ early winter) - ● -


Smell

May .2010 inserviceMeijo WaterTreatmentCenter　・advancedwatertreatment

Sep..2010 inserviceHorikawa UganRain-waterResevoir forpollutioncontroll

Impression ofclearness

Transparency

ＣＯＤ

Bubble

Summary of survey


34

27

118

16

39

5045

39 38

57

93

40

12

23

36

43

87

50

56 57

50

73

5050

1821

23

53

87

56

25

50

36

100

0

6

0 0

29

60

0

61

28

20

62

100

0

16

5

12

40

100100

0

20

40

60

80

100

Koshin Bridge ～Oseko Bridge

Oseko Bridge ～Matsushige Bridge

Matsushige Bridge ～Asahi Bridge

Asahi Bridge ～Johoku Bridge

Johoku Bridge ～Sanage Bridge

Sanage Bridge ～Sakae Bridge

Impression of clearness (%)

1st stage Apr.22～Jun.30 2007 2nd stage Sep. 8～Dec.16 2007

3rd stage Apr. 1～Jun.30 2008 4th stage Sep.28～Dec.16 2008

5th stage Apr. 1～Jun.30 2009 6th stage Sep.27～Dec.16 20097th stage Apr. 1～Jun.30 2010 8th stage Sep.11～Dec.17 2010

9th stage Apr. 1～Jun.30 2011

Not enough data

25 investigation of 31 were executed on June 27 at Kizune Bridge.*)% ; "comfortable “+"a little comfortable “+"neither ".

Not enough dataNot enough data31 41 15 2 8 337 47 42 11 30 1712 21 14 2 13 446 103 82 28 37 16Numbers of Data 3

2

5 2 2 1 0 0 0 25 6 24 515 35 33 9 29 25 30 21 25 5 16 825 22 9 20 5

Impression of Clearness

The ratio of “comfortable ","a little comfortable" and "neither ". **

・1st

– 6th

stage ：

TRWKR

・7th

– 9th

stage ：

No TRWKR

・No Rain on the day and the previous day

Increase

Increase

■How did the impression of clearness (“from spring to early summer”) change during TRWKR ? →

The ratio of "comfortable", "a little comfortable“ and "neither" increased with TRWKR. It was confirmed that the ratio of “comfortable ","a little comfortable" and "neither " tends to increase during

TRWKR between Sanage


Bridge.**

"comfortable", "a little comfortable" and "neither " are categorized as the acceptable range for citizens

Improved during TRWKR

Increase

Inje

ction P

oin

t of TRW

KR

Meijo

Wate

rTre

atm

ent Cente

r

Nagoya

Port

Shin

-Horika

wa

Riv

er

confluence

Tra

nsm

issi

on o

f ra

w w

ate

r from

ShonaiRiv

er


41

19 1822

37

6

29

16

5

12

40

0

20

40

60

80

100

Koshin Brigde～OsekoBridge



Asahi Bridge～JohokuBridge

Johoku Bridge～Sanage Bridge

Impression of clearness（％）

The average of 1st・3rd・5th stage: with TRWKR

7th satge：after the stop of TRWKR

9th stage: after the stop of TRWKR

■How did the impression of clearness (“from spring to early summer") change after the stop of TRWKR ?・The ratio of “comfortable”,“ a little comfortable” and “neither” was reduced between Matsushige

Bridge

and Asahi Bridge.

→

In this result, it was confirmed that the impression of clearness was improved during TRWKR.・The ratio of “comfortable”,“

a little comfortable”

and “neither”

between Matsushige

Bridge and Johoku

Bridge was low.→

It is considered that the impression of clearness between Matsushige

Bridge and Johoku

Bridge is not good.** “comfortable”,“ a little comfortable” and “neither” are categorized as the acceptable range for citizens

Impression of ClearnessThe ratio of "comfortable", "a little comfortable" and "neither".**

20109639010 3077 25165Numbers of Data

No date

13% decrease

Improved during TRWKRAverage of 1st・3rd・5th stage

=Average during TRWKR at the

same season as 7th・9th

0 25 22 9 24Not enough data

0 0

・1st

– 6th

stage ：

TRWKR

・7th

– 9th

stage ：

No TRWKR

・No Rain on the day and the previous day

Nagoya

Port

Shin

-Horika

wa

Riv

er

confluence

Meijo

Wate

rTre

atm

ent Cente

r

Inje

ction P

oin

t of TRW

KR

Not enough data

*)% ; "comfortable “+"a little comfortable ”+"neither ".Comparison of TRWKR period and after stop of TRWKR

Bad impression between Johoku

Bridge and Matushige

Bridge

(=The ratio of “comfortable”,

“

a little comfortable”

and “neither”

was low ）


20%

40%

6%21%

48%

22% 26%36%

11% 10%7%

60%

45%

62%

55%

48%

45% 45%

50%

15% 11%

26%21% 22% 19%

7%

2%

2%

3%

4%2% 3%

3%1% 2%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

1st stage

2nd stage

3rd stage

4th stage

5th stage

6th stage

7th stage

8th stage

9th stage

Rate o

f criterio

n for judgm

ent of

impression（

％）

water color smell transparency garbage bubble living things others


(from Sanage

Bridge to Koshin

Bridge)

56%63%

57%68% 69%

56%50% 52%

10%

13%

6%10%

13%8%

19%

8%14% 11% 36%

18%

22% 19%24%

13% 17%13%

8%18%

5% 5%

4%3%

1%

4%

3%1%1% 2%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

1st stage

2nd stage

3rd stage

4th stage

5th stage

6th stage

7th stage

8th stage

9th stage

Rate o

f cr

iteri

on f

or j

udgm

ent

of

impr

essi

on（

％）

water color smell transparency garbage bubble living things others

Criterion for Judgment of "a little Dirty", "Dirty"

■The reply of

“Water color"

was over

50%.

No data

Criterion for Judgment of "comfortable ","a little comfortable ","neither ".

■The reply of

“Transparency” was 40 ～

60 %

TRWKR period

・1st stage : No data・2nd -

6th stage：TRWKR・7th -

9th stage：No TRWKR

・No rain on the day and the previous day

TRWKR period

No data



36%26%

3%

3%

58%40%

14%

13%5%1%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

68% 64%

4%

27%21%

6% 9%1%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

53%55%

12%6%

18%17%

15%18%

1%1% 2%1%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

42%

56%

17%

7%

19%22%

17%17%

2%1%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

87%

33%

3%

51%

13%13%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%others

living things

bubble

garbage

transparency

smell

water color


(from Sanage

Bridge to Koshin

Bridge)

2nd -

9th stage containing the extended period with TRWKR / no TRWKR

Koshin

Brigde Oseko

Bridge Matsushige

Bridge Asahi

Bridge Johoku

Bridge Sanage

Bridge

Meijo


Injection Point of TRWKRShin-Horikawa

River confluence

■

In case of rain on the previous day, how impression of clearness

has changed?→Between Sanage

Bridge and Asahi Bridge, the evaluation of “Transparency”

increased and “Water color”

decreased.→Between Asahi Bridge and Oseko

Bridge, “Smell”

increased and “Water color”

decreased.

“Smell”

increased, “Water color”

decreased“Transparency”

increased,“Water color”

decreased

Increase

DecreaseDecrease

Decrease

Increase

Increase

Increase

Koshin

Bridge

～Oseko

BridgeOseko

Bridge

～Matsushige

BridgeMatsushige

Bridge

～Asahi Bridge

Asahi Bridge

～Johoku

BridgeJohoku

Bridge

～Sanage

Bridge

① ② ① ② ① ② ① ② ① ②

①; No Rain on the day and the previous day ②; No Rain on the day and Rain on the previous day

Rate

of crite

rion for

judgm

ent of im

pre

ssio

n (

%)


100

90

45

50

100

9592

65

79

88

0

5652

43

5855

0

8379

50

77

62

0

57

87

5953

5958

9389

84

74

80 80

68

61

52

7163

56

8783

59

54

60 61

68

42

55

64

51

65

57

0

20

40

60

80

100

Koshin Bridge～Oseko Bridge





Sanage Bridge～Sakae Bridge

transparency(cm)

1st stage Apr.22～Jun.30 2007 2nd stage Sep. 8～Dec.16 2007 3rd stage Apr. 1～Jun.30 20084th stage Sep.28～Dec.16 2008 5th stage Apr. 1～Jun.30 2009 6th stage Sep.27～Dec.16 2009

7th stage Apr. 1～Jun.30 2010 8th stage Sep.11～Dec.17 2010 9th stage Apr. 1～Jun.30 2011

Transparency average value in each section

Note）

Over 100cm values were regarded as 100cm.

Increase

Increase

Transparency improved during TRWKR Transparency improved during TRWKR

■

How did transparency of water (spring～early summer) change during TRWKR period?→

Transparency level was improved between Sanage

Bridge and Johoku

Bridge , and between Asahi Bridge and Matsushige

Bridge.

・1st -

6th stage：TRWKR・7th -


・

No rain on the day and the previous dayNagoya

Port

Shin

-Horika

wa

Riv

er

confluence

Meijo

Wate

rTre

atm

ent Cente

r

Inje

ction P

oin

t of TRW

KR

Tra

nsm

issi

on o

f ra

w w

ate

r from

ShonaiRiv

er


57

65

51

6468

5658 57

66

5652

43

58

0

20

40

60

80

100

Minatoshin Bridge ～ Oseko Bridge





Tra

nspar

ency

(cm

)

The average of 1st, 3rd, 5th stage ：During TRWKR 7th stage: After the stop of TRWKR 9th stage: After the stop of TRWKR

Change in Transparency -

average of each section

■

How did the transparency (spring ～

early summer) change after the stop of TRWKR?→There was a little change after the stop of TRWKR. But, there was no conspicuous change in the 9th stage.

The transparency between Johoku

Bridge and Oseko

Bridge was low.

The transparency in the downstream section below Sanage

Bridge was lower (worse) than 70cm

(citizens' acceptable transparency

:Impression of water clearness: “Comfortable～Neither”).

Comparison between the transparency during TRWKR （the average of 1st, 3rd, 5th stage）and the transparency after the stop of TRWKR（

the average of 7th, 9th stage）

2071629010 3073 22106Number of data

No data

Nagoya

Port

Shin

horika

wa

Riv

er

Meijo

Wate

rTre

atm

ent

Cente

r

0 24 20 8 20

・There was no conspicuous change in the 9ｔｈ

stage.・The transparency was low between Johoku

Bridge and Oseko

Bridge.・The transparency in all the downstream sections below Sanage

Bridge was lower than 70cm (citizens' acceptable transparency).

Not enough

data

・

1st, 3rd, 5th stage：TRWKR・

7th and 9th stage：No TRWKR

・

No rain on the day and the previous day

Not enough data

Inje

ction P

oin

t of TRW

KR


Correlation between “impression of clearness”and the average of “transparency”.

Transparency70cm or more

Transparency of “70 cm or more”

is one of the targets for improvement of “impression of water clearness”.

・

During 2nd～9th stage (including data of out-of stage period). ・

No rain on the day・

All section including upstream section

The citizens’

acceptable

range

Impression of clearness(evaluated by citizens in terms of water transparency)


81

69 68

54

7171

56

48 48

62

0

10

20

30

40

50

60

70

80

90

100

Minatoshin Bridge ～ Oseko Bridge

Oseko bridge～Matsushige Bridge




Transparency（cm）

No rain on the previous day Rain on the previous day

398 77 11 4510 74 407 111 278

The average of transparency when it rained on the previous day. Sanage

Bridge～Minatoshin

Bridge

■

How did the transparency change after it rained on the previous day?→The transparency after it rained on the previous day was lower than the transparency

after it didn’t rain on the previous day.Especially, the transparency became lower between Johoku

Bridge and Matsusige

Bridge.

The transparency after it rained on the previous day was lower than the transparency after it didn’t rain on the previous day.

Nagoya

port

Shin

horika

wa

Riv

er

Meijo

Wate

rTre

atm

ent

Cente

r

Number of data 35

Especially, the transparency became lower between Johoku

Bridge and Matsusige

Bridge.

・1nd～9th stage (including data of out-of stage period) ・No rain on the day

Inje

ction P

oin

t of TRW

KR


6

11

10

4 4

6

11

9 9 9

0

8

12 12

11

8

0

8

13

12

13

15

0

9 9

7

16

9

10

15 1514

7

10

11

13

910

9

14

11

99

8

9

7

99

13

12

10

9

13

11

0

2

4

6

8

10

12

14

16

18

20





Johoku Bidge～Sanage Bridge

Sanage Bidge～ Sakae Bridge

COD(mg/L)

1st.stage Apr.22～Jun.30 2007 2nd.stage Sep.8～Dec.16 2007 3rd.stage Apr.1～Jun.30 2008

4th.stage Sep.28～Dec.16 2008 5th.stage Apr.1～Jun.30 2009 6th.stage Sep.27～Dec.16 2009

7th.stage Apr.1～Jun.30 2010 8th.stage Sep.11～Dec.17 2010 9th.stage Apr.1～Jun.30 2011

Note) The value of 20mg/l or more was treated as 20mg/l

decrease

decrease

decrease

COD

improved

during TRWKR

Change in

COD

the average value in each

section

■

How did COD

（spring～early summer) change during TRWKR period？→

As for COD between Sanage


Bridge, the tendency of

decrease (improvement) was found during TRWKR.

No data

Not enough data Inje

ction P

oin

t of TRW

KR

Meijo

Wate

rTre

atm

ent Cente

r

Not enough data

Nagoya

Port

Shin

horika

wa

Riv

er

・

1st

-

6th stage：TRWKR・

7th -


・



9

13

9

1111

13

14

9

7

1112

12

8

0

2

4

6

8

10

12

14

16

18

20

Minatoshin Bridge～ Oseko Bridge



Asahi Bridge～ Johoku Bridge

Johoku Bidge～ Sanage Bridge

COD(mg/L)

the average of 1st, 3rd, and 5th stage : with TRWKR 7th Stage : after the stop of TRWKR9th Stage : after the stop of TRWKR

・



・


2020938010 2474 22110

Numbers of Data 300 22 6 102

Comparison

between average COD of 1st, 3rd, 5th stage(TRWKR period)and average COD of 7th and 9th stage (after the stop of TRWKR)

■

How did COD(spring～early summer) change after the stop of TRWKR？→・Although there was some change after the stop ot

TRWKR, a remarkable change was not found in the 9th stage. ・COD

between Johoku


Bridge

was slightly high.

Change in

COD

the average value in each

section

Note) The value of 20mg/l or more was treated as 20mg/l

Inje

ction P

oin

t of TRW

KR

Meijo

Wate

rTre

atm

ent Cente

r

Nagoya

Port

Shin

horika

wa

Riv

er

Not enough

dataNot enough data

No data


6

8

1312

11

5

8

13

109

0

2

4

6

8

10

12

14

16

18

20

Minatoshin Bridge～Oseko Bridge




Johoku Bidge～Sanage Bridge

ＣＯ

Ｄ(mg/L）

No rain on the previous day Rain on the previous day

406 425 127 33310 74 88 15 53

■

How did COD change when it rained on the previous day？→After it rained on the previous day, COD

between Sanage

Bridge and Asahi Bridge improved.

After it rained on the previous day,COD improved

between Sanage

Bridge and Asahi Birdge.

・

During 1st～9th stage (including data of out-of stage period). ・

No rain on the day

Inje

ction P

oin

t of TRW

KR

Meijo

Wate

rTre

atm

ent Cente

r

Nagoya

Port

Shin

horika

wa

Riv

er

Numbers of Data 36

The average of

ＣＯＤ

when it rained on the previous day. Sanage

Bridge～Minatoshin

Bridge


216

19 11 6

3213 20

30

9

24

11

156

12

13 56

49

85

57

8974

82

5674 75

0%

20%

40%

60%

80%

100%

1st stage 2nd stage 3rd stage 4th stage 5th stage 6th stage 7th stage 8th stage 9th stage

The

occurrenc

e of bub

bles

_Con

stitu

tion Ratio(%

)

Bubbles were not seenBubbles flowed from the downstreamBubbles flowed from the upstreamBubbles floated from the bottom of the river

S anage B ridge～J ohoku B ridge

33 47 42 9 27 17 24 16 20

The number of Data

8 8 138 20

1350

8495 100

50

92100

80

100

74

50%

20%

40%

60%

80%

100%


The

occurrenc

e of bub

bles

_Con

stitu

tion ratio

(%)


J ohoku B ridge～Asahi B ridge

12 21 14 2 12 3 5 5 8

58

23

56

3042 38

13

58

40

69

42

7055

100

58

87

42

2

4

1

3

4

1

4

0%

20%

40%

60%

80%

100%


The

occurrenc

e of bub

bles

_Con

stitu

tion ratio

(%)


Asahi B ridge～Matsushige B ridge

45 104 81 27 31 15 24 23 19

14 13134

11

86 9484

10089

100

75

10083

73

373

74

0%

20%

40%

60%

80%

100%


The

occurrenc

e of bub

bles

_Con

stitu

tion ratio

(%)


Matsushige B ridge～Oseko B ridge

15 34 30 9 9 24 28 19 23

33

67

100 100 100 100 100

0%

20%

40%

60%

80%

100%


The

occurrenc

e of bub

bles

_Con

stitu

tion ratio

(%)


Oseko B ridge～Minatoshin B ridge

3 2 5 2 2 1 0 0 0

The numberof Data

The numberof Data

The number of Data

The number of Data

The occurrence of bubbles

(Sanage

Bridge～Minatoshin

Brigde・each area)

Not enough data

the frequency of the occurrence of bubbles decreased

Decreasing the frequency of the occurrence of bubbles

Period of TRWKR

■

How did the bubbles during the period of TRWKR

（Spring～Early summer) change?→The frequency of occurrence of bubbles decreased in the area between Sanage

Bridge and Johoku

Bridge, Asahi Bridge and Matsushige

Bridge during the period of TRWKR.The ratio of “Bubbles from the bottom of the river”

is larger than other areas.

Period of TRWKR

Period of TRWKR Period of TRWKR

Period of TRWKR

Not enough data

Not enough data

Not enough data

・



・


No data


58

38

53

4

42

58

44

21

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

9th Stage7th Stage1st/3rd/5th Stage

Bubbles were not seen

Bubbles flowed from the downstream

Bubbles flowed from the upstream

Bubbles floated from the bottom of the river


13143

411

8375

86

101

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

9th Stage7th Stage1st/3rd/5thStage






10

90

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%







0

135

13

20

7480

92

3

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%







20

32

18

5

12

75

5658

24

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%






Johoku Bridge～Sanage BridgeThe occ

urrence

of b

ubbles_

Constitu

tion ratio

(%

The occ

urrence

of b

ubbles_

Constitu

tion ratio

(%)

The occ

urrence

of b

ubbles_

Constitu

tion ratio

(%

The occ

urrence

of b

ubbles_

Constitu

tion ratio

(%

The occ

urrence

of b

ubbles_

Constitu

tion ratio

(%)

Number of Data

Number ofData

Number ofData

Number ofData

Number ofData

Minatoshin

Bridge Oseko

Bridge Matsushige

Bridge Asahi Bridge Johoku

Bridge Sanage

Bridge

Meijo


TRWKRJunction of Shin‐horikawa

River

■

How about the occurrence of bubbles （Spring～Early summer)?→

The rate of “bubbles floated from the bottom of the river”

between Asahi Bridge and Matsushige

Bridge is higher

than other areas.

Comparison during the period of TRWKR and after the period of TRWKR

(1st/3rd/5th

Stage and 7th/9th

Stage)

The occurrence of bubbles

After the period of TRWKR,the occurrence of bubbles decreased,especially “bubbles flowed from the

upstream”

decreased.

No data

Not enough data The rate of “Bubbles floated from the bottom of the river”

increases, after the period of TRWKR.There is no significant change,,after the period of TRWKR.

導水期間中に改善の傾向

The rate of“Bubbles

floated from the bottom of the river“

is high.

■

How did the bubbles during the period of TRWKR

（Spring～Early summer) change?→

There was no area where frequency of the occurrence of the bubble increased notably.,after

the period of TRWKR(9th Stage).The frequency of the occurrence of bubbles between Sanage

Bridge and Johoku

Bridge decreased. And, the frequency of the occurrence of bubbles between Asahi Bridge and Ohseko

Bridge didn’t change significantly.

In the 9th

stage, there was no area where frequency of the occurrence of the bubble increased notably.

・



・


10 0 0 72 28 24 157 24 19 38 5Not enough data

8 102 25 20


8 510

12

9 10

17

5

24

30

38

9

3729

42

1920

4968

47

82

5365

29

75 70

156

42

56

0%

20%

40%

60%

80%

100%

1st Stage 2nd Stage 3rd Stage 4th Stage 5th Stage 6th Stage 7th Stage 8th Stage 9th Stage

Bad smell Rather bad smell Smell A little smell Not smellS anage Bridge～J ohoku Bridge

33 47 42 173011 24 16 20

208

20

2011

3350

8

20

2022

25

43

43

46

25

20

20 33

2542

57 5038

75

20

40 33

517

55

0%

20%

40%

60%

80%

100%


Bad smell Rather bad smell Smell A little smell Not smellJ ohoku Bridge～As ahi Bridge

12 21 14 4132 5 5 9

11 12 96

14 16 129

15

13

1216 20

8

14

37

4230

46

49

6

44

48

32

2435 33

50

8

75

12

40 36

11411 46

1313

40%

20%

40%

60%

80%

100%


Bad smell Rather bad smell Smell A little smell Not smellAs ahi Bridge～Matsushige Bridge

46 107 2 163728 25 25 22

Y

2110 109

15 1317

7

15

11

723

21

13

29

18

11

17

32

23

24

2980

5943

78

5264

31

61

33

9

353 4

0%

20%

40%

60%

80%

100%


Bad smell Rather bad smell Smell A little smell Not smellMatsus hige Bridge～Oseko Bridge

15 35 33 25299 30 21 24

50

67

100 100

50

100 100

33

0%

20%

40%

60%

80%

100%


Bad smell Rather bad smell Smell A little smell Not smellOseko Bridge～Minatos hin Bridge

3 2 5 122 00 0

Number of Data Number of Data

Number of DataNumber of Data

Number of Data

The occurrence

of sm

all_

Constitu

tion ratio

(%)

The occurrence

of sm

all_

Constitu

tion ratio

(%)

The occurrence

of sm

all_

Constitu

tion ratio

(%)

The occurrence

of sm

all_

Constitu

tion ratio

(%)

The occurrence

of sm

all_

Constitu

tion ratio

(%)

The occurrence of smell (Between Sanage

Bridge ～

Minatoshin

Bridge)

A few data

■

How did the smell during the period of TRWKR


The smell of “bad smell”,”rather

bad smell”

and “smell”

decreased in the area between Sanage

Bridge and Johoku

Bridge, Asahi Bridge and Matsushige

Bridge, during the period of TRWKR.

The rate of “bad smell” , “rather bad smell”and “smell” decrease.

Period of TRWKR

No data

The rate of “bad smell” , “rather bad smell”

and “smell” decrease.

・

1st

-

6th stage：TRWKR・

7th -


・


Period of TRWKR

Period of TRWKR

Period of TRWKR

Period of TRWKR

Not enough data Not enough dataNot enough data


91211

912

14

2014

32

44

36

36

12

25

14

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%


Bad smell Rather bad smell

Smell A little smell

Not smell


164 25 22

101217

13

21

23

2923

17

3331

53

8

10

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%


Bad smell Rather bad smellSmell A little smellNot smell


77 30 24

10

90

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%



Smell A little smellNot smell

Minatoshin Bridge～Oseko Bridge

10 0 0

2011

20

8

22

20

13

33

20

38

34

20

41

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%



Smell A little smell

Not smell


39 5 9

58

4

95

17

9

20

42

33

70

29

49

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%


Bad smell Rather bad smellSmell A little smellNot smell

105 24


20

The

occ

urrenc

e of s

mall_Con

stitution ratio(%

)

The

occ

urrenc

e of s

mall_Con

stitution ratio(%

)

The

occ

urrenc

e of s

mall_Con

stitution ratio(%

)

The

occ

urrenc

e of s

mall_Con

stitution ratio(%

)

The

occ

urrenc

e of s

mall_Con

stitution ratio(%

)

Number of DataNumber of Data

Number of Data Number of Data Number of Data

Minatoshin

Bridge Oseko

Bridge Matsushige

Bridge Asahi Bridge Johoku

Bridge Sanage

Bridge

Meijo


TRWKRJunction of Shin‐horikawa

River

■

How did the smell during the period of TRWKR


There was no area where the rate of “smell”,”rather

bad smell”

and “bad smell”

increased notably, after the period of TRWKR(9th

Stage).

The occurrence of smell

■

How about the smell （Spring～Early summer)? →

The rate of “bad smell“, “rather bad smell”

and “smell”

between Asahi Bridge and Ohseko

Bridge is high.

The rate of “bad smell“, “rather bad smell”

and “smell”

is high.

In the 9th

stage, there was no area where the rate of “smell”,”rather

bad smell”

and “bad smell”

increased notably.

Comparison during the period of TRWKR and after the period of TRWKR

(1st/3rd/5th

Stage and 7th/9th

Stage)

・



・


No data

Not enough data Not enough data


all section

1.9

0.10.4

0

3.0

0.30.1

2.2

0.4

0

0.2

2.7

0

1

2

3

4

5

total plastics cans bottles papers cigarettebutts

variety of artificial garbage

the n

um

ber of artific

ial garb

age

(num

ber/

one s

urv

ey)

1st stage 2nd stage3rd stage 4th stage5th stage 6th stage7th stage 8th stage9th stage

Suspended Substance (Artificial Garbage) Change in

the number of Suspended Substance

Note1)the number of artificial garbage per survey = the number of each artificial garbage/the number of surveysNote2)the number of artificial garbage is the garbage found by survey.

■What is the garbage which floated in the water surface most?→Plastics!

the number of surveys1st

stage：1452nd

stage：2553rd

stage：1914th

stage：545th

stage：1196th

stage：667th

stage：908th

stage：75

9th

stage：81

■artificial garbagePlastics (shopping bags, plastic bags, pot noodle vessels, foam polystyrene trays, pet bottles, etc.), cans, bottles, cigarette butts

1st～6th

stage：TRWKR

7th～9th

stage：No TRWKRNo rain on the day and the previous day

The number of plastics

is large

The total of each artificial garbage per stage


2.0 2.5 1.8 2.23.6

0.0 0.2 0.4 1.2 0.4 0.01.0

0.2 0.6 0.5 0.2 0.00.9 0.9

4.1

0.1

2.4 1.51.8 0.5 0.5

1.8

26.0

1.01.1

1.00.4 0.41.5

0.0

0.91.2

12.7

02468

10121416182022242628

tota

l

shop

ping

bag

s

plastic bags

other plastic bags

pot noodle vessels

foam

pol

ysty

ren

trays

other plastic products

pet

bott

les

shopping bags with garbage

city

-des

igna

ted

garb

age

bags with garbage

cans

glas

s bo

ttle

s

pape

r ca

rton

s

paper bags

news

pape

r

maga

zine

s

othe

r pa

per

cigarette packages

ciga

rett

e bu

tts

the

freq

uenc

y (a

rtifi

cial

gar

bage

on

the

road

/10 surveys)

2nd stage・all sectiion 3rd stage・all sectiion

4th stage・all sectiion 5th stage・all sectiion

6th stage・all sectiion 7th stage・all sectiion

8th stage・all sectiion 9th stage・all section

Garbage on the road Change in

the frequency that artificial garbage

on the road was found （2nd

stage～9th

stage, all section）

“shopping bags 1.8”

means that we found shopping bags 1.8 times if we survey 10 times.

・Almost all kinds of the garbage decreased for the period of TRWKR, but increased for the period of no TRWKR.・Only cigarette butts have been increasing for all periods.

The total of the frequency that 18 kinds of garbage was found per stage

■How has the frequency of artificial garbage on the road changed?→It decreased for the period of TRWKR. It might be caused by

intensified cleaning campaign or changes in social circumstance (the charge for shopping bags started etc.)However, it

increased after the stop of TRWKR (8th and 9th stages)→”Cigarette butts”

was most frequent to be found on the road. It has continued on increasing trend.

1st～6th stage：TRWKR

7th～9th stage：No TRWKRNo rain on the day and the previous day

■artificial garbagePlastics (shopping bags, plastic bags, pot noodle vessels, foam polystyrene trays, pet bottles, etc.), cans, bottles, cigarette butts


Aquatic lives in the 9th stage■

April 13, 2011Young fishes, kind of a goby, were seen

running up at Nishiki

Bridge.In 2008 and 2009, it was seen on April

22, and in 2010, April 25. It was seen 10 days earlier this year.

■

April 26, 2011Young mullets (3cm in length) were seen

running up to upper stream at Nishiki

Bridge.It was seen one month earlier than last year.

（The first day of seeing young mullets running up at Nishiki

Bridge）・May 9, 2007

・March 22, 2008・May 3, 2009

・March 25, 2010・April 26, 2011

■

From late April to early May, a large number of dotted gizzard shads were dead, The similarities between last year and this year are,①First mass death of fish of the year: late Apr.-early May. ②Kind of fish：

dotted gizzard shad, ③temperature：

around 15 ℃, ④tide：spring tide, ⑤

rain：after rain?,

⑥？？？・・・・

■

April 30, 2011Around 1:00 PM, dotted gizzard

shads(20cm in length) were wriggling painfully on the water surface near Hioki

Bridge. It might be caused by lack of oxygen. We surveyed the upper and lower stream area, and found that it occurred between Matsushige

Lock Gate and Iwai Bridge.

photo by Kawasemi

Survey Group

0

5

10

15

20

25

30

35

2010/4/1 2010/5/1

year/month/day

tem

pera

ture

(℃

), th

e a

ge o

f th

e m

oon(day)

0

10

20

30

40

50

60

70

rain

fall(

mm

/day)

rainfall

the age of themoont t

new moon: spring tide

full moon: spring tide

new moon: spring tide

full moon: spring tide

April 30, 2010About 150 dotted gizzard shadswere dead on the water.

2010

May 21, 2010About 1500 dotted gizzard shadswere dead on the water.

0

5

10

15

20

25

30

35

2011/4/1 2011/5/1

year/month/day

tem

pera

ture

(℃

), th

e a

ge o

f th

e m

oon(

day

)

0

10

20

30

40

50

60

70

rain

fall(

mm

/day

)

rainfall

the age of themoont t

full moon: spring tide full moon: spring tide

new moon: spring tidenew moon: spring tide

May 2, 2011About 1000 dotted gizzard shadswere dead on the water.

2011

Newspaper article on May 2, 2011

■

April 15, 2011

Egg-laying of CarpA lot of big carp, 70～80cm in length,

run up to the upper stream to lay eggs into algae. It was spectacular that they were pushing their way into a little algae, splashing, and laying eggs.

■

Experience in natureKurokawa

Dream Party

President Mr. Umemoto

(also the President of the executive Committee of HSC）

We caught turtles, crayfish, Japanese mitten crabs, dragonfly naiads, goby minnow, Palaemon

adspersus

and so on.

■June 9, 2011

a turtle laying eggs■May 8, 2011

Encountering

a snake

Photo by Goyousui-ato-gaien-aigokai

Survey Group

Progress of Citizen’s Awareness

-Study Meetings-

Survey of fish & living things in the bottom of river Report : Goyosuiato-gaien-Aigokai

Survey Group

History walking & Cherry blossom viewing at Horikawa

River and Goyosuiato-gaienParticipant : Retired people Group of Aichi Prefecture High SchoolReport : Goyosuiato-gaien-Aigokai

Survey Group

The 8th meeting of HSC Report : secretariat

Strall

around historical places near Horikawa

River & Visiting Washing the dye of Yuzen

textileParticipant : Japan Secondlife

Association Report : Goyosuiato-gaien-Aigokai

Survey Group

Horikawa

Culture Reaearch

Group “With Horikawa”Report : Goyosuiato-gaien-Aigokai

Survey Group

Host : Ise

Bay Basin Reclamation NetworkReport : secretariat

Study meeting for freshers

of Environmental Pollution Research and Analysis CenterReport ：

Goyosuiato-Gaien-Aigokai

Survey Group

The 1st

survey group special study meetingReport ：

Goyosuiato-Gaien-Aigokai

Survey Group

Chunichi

NewspaperMorning, Feb.21st.2011


-Study Meetings-

Experience & study in nature

in Horikawa

riverParticipant : 2nd

Grade of Shimizu Elementary School Report : Goyosuiato-Gaien-Aigokai-Survey

Group

Nature Observating

Event in Horikawa

RiverParticipant : 2nd

Grade of Osugi

Elementary School Report : Goyosuiato-Gaien-Aigokai-Survey

Group

Experience & study in Horikawa

“river living things survey”Participant : 2nd

Grade of Tsuji Elementary School Report : Goyosuiato-Gaien-Aigokai-Survey

Group


-Study Meetings-


Experience & study in nature in Horikawa

river living things surveyParticipant : 2nd

Grade of Iida Elementary School Report : Goyosuiato-Gaien-Aigokai-Survey

Group

Experience & observating

event in nature in Horikawa

river living things surveyParticipant : 3rd

Grade of Iida Elementary School Report : Goyosuiato-Gaien-Aigokai-Survey

Group

Experience & study in Horikawa

river living things surveyParticipant : 3rd

Grade of Mehoku


Group

Study event in Horikawa

riverParticipant : 3rd

Grade of Mehoku


Group

Extracurricular study in Horikawa

riverParticipant : 3rd

Grade of Mehoku


Group


-Study Meetings-


Chunichi

NewapaperMorning, Feb. 22nd. 2011

2011 1st

Horikawa

River regeneration forumPlace ：

Nagoya Institute of TechnologyReport : secretariat

Family experience event at waterside “Horikawa

Hunter Horiko”Host : Junior Chamber International NAGOYAReport : Goyosuiato-Gaien-Aigokai-Survey

Group

Mini experience & study in Horikawa

RiverReport : Goyosuiato-Gaien-Aigokai-Survey

Group


-Study Meetings-


Injection of “EM Mudball”

& “EM activating liquid”by Conference for clarification of Ise

Bay, Mikawa

Bay and Horikawa

River Report : Goyosuiato-Gaien-Aigokai-Survey

Group

Presentation of results for one year surveyby The 24th

survey group of Environmental Department of University for SeniorPlace : Horikawa

River GallaryReport : secretariat

Report

of

free survey & research activityby Meidensha Nishiki

Survey Group

Research Report by Nagoya Urban instituteReport : Goyosuiato-Gaien-Aigokai-Survey

Group


–Activities of “Free Survey Groups” and “Cheering Groups” –

Horikawa

River after Great East Japan Earthquake(on Mar. 12th

&14th)Report ：

Nakanihon

Engineering ConsultantsKawasemi

survey group

Clarification experiment of Horikawa

River by water spinachParticipant : Ena

Agricultural High SchoolNagoya Horikawa

Lions ClubReport : secretariat

Chunichi

Newspaper Tono

area local version, Jun. 22nd. 2011

Chunichi

Newspaper Morning, Jun. 18th. 2011

Cleanup activityHost ：

Clean HorikawaCars carrying relief supply to disaster area of the Great East Japan Earthquakeby Earth Club Survey GroupReport : secretariat

Introduction of “cultivation of water spinach in Horikawa

River”

to Cambodia

Report ：

Gifu Prefecture UNESCO AssociationEna

Agricultural High School



Survey of water quality for 8 hours at 6 points in Horikawa

Riverby Kojo

& Horikawa

to Seikatsu

wo

Kangaeru

Kai Survey GroupReport : secretariat

Fixed point observationby Shinko Survey Group

Chunichi

NewapaperEvening, May. 31st. 2011

Eco DocoHorikawa

Cheering GroupOpening Homepage Site

Fixed point observationBy Earth Club



http://www.eco-doco.jp/

Cleanup Activityby Kojo

& Horikawa

to Seikatsu

wo

Kangaeru

Kai survey GroupReport : secretariat

Cleanup Activity & Fixed Point Observationby Nakanihon

Engeering

Consultants, Kawasemi, Karugamo

and Kamome

Survey Group

Cleanup Activity

& Injection of EM MudballHost : Kurokawa

Dream KaiReport : Goyosuiato-Gaien-Aigokai

Survey Group

Cleaning Activityby Nagoya Horikawa

Lions Club, local residents and Boy ScoutsCooperation : Nagoya Seiko KaiReport : secretariat

Cleaning Activities by Roman Kurokawa,, Assistant Center Nanairo,Report : Goyosuiato-Gaien-Aigokai

Survey Group

Cleanup Activity

& Injection of EM Mudball, etcHost : Horikawa

Eco Club

Progress of Citizen’s Awareness–Activities of “Free Survey Groups” and “Cheering Groups” –

Chunichi

NewspaperMorning, Mar. 29th. 2011

Ceremony of Planting 3 trees donatedby Nagoya Horikawa

Lions Club

Environmental Patrolby Kojo

& Horikawa

to Seikatsu

wo

Kangaeru

KaiReport ：

secretariat

Chunichi

NewspaperMorning, Feb. 18th. 2011

Yomiuri NewspaperMorning, Apr. 8th. 2011


Activity ReportMeeting with youth of Kiso

areaHost : Kiso

River Basin Min-Min no Kaifor protecting river source area


Cleaning Activities by Roman Kurokawa, Assistant Center Nanairo,Report : Goyosuiato-Gaien-Aigokai

Survey Group

Horikawa

River Talk & Live『Community Development with River』

～suggestion from a point of view of Community Development and Waterside sightseeing sightseeing～Host ：

NPO Citizen Community Development Kaze

no KaiReport : Goyosuiato-Gaien-Aigokai

Survey Group

Ekichika

WalkingReport : Goyosuiato-Gaien-Aigokai

Survey Group

Nagoya Environmental Day in Spring 2011

Host : Nagoya City Environmental bureau

Experience of boarding in Horikawa

RiverCooperation ：

Nagoya Horikawa

Lions Club

Chunichi

NewspaperMorning, Feb. 27th. 2011

Progress of Citizen’s Awareness –Events–

Chunichi

NewspaperMorning, Jun. 5th. 2011

The 53rd

Nagoya Water Festa

“Nabeyaueno

Water Purification Plant Open Event”Participant : The 25th Survey Group of Environmental Department of University for Senior

Nagoya Grampus Survey Group

Nagoya Horikawa

Lions Club Survey GroupReport : secretariat


Mainichi NewspaperMorning, Aug. 22nd. 2011

Horikawa

River Eco-Robot Contest 2011Host ：

Nagoya Horikawa

Lions Club, Nagoya Institute of TechnologyReport ：

secretariat, Eco-Doco

Cheering Group “http://www.eco-doco.jp”


http://www.horikawa-lions.com/eco-robocon/images/2011.pdf

http://www.eco-doco.jp/

Yomiuri NewspaperMorning, May. 14th. 2011

Horikawa

Flower Festival 2011Opening CeremonyReport : secretariat

Horikawa

Flower Festival 2011Report : Goyosuiato-Gaien-Aigokai

Survey Group

Progress of Citizen’s Awareness –Events-

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