Activities of Fourth Stage
On February 28th
2009, the 4th survey groups’ conference of the Horikawa-Sennin Chosatai
(HSC) was held.
Summary Meeting for the 4th Stage of River Survey Activities
28th, 2009, 13:30-16:00
room at 11F, Nagoya Urban Institute
On February 28th
2009, the 4th survey groups conference
was held at the Nagoya Urban Institute in Kanayama, Naka-ward.
The objectivities of this meeting were as follows:
(1) Summarizing the result of the survey by the citizen’s survey groups in the 4th stage from September to December, 2008.
(2) Verifying the effect of the Transmission of Raw Water from the Kiso River (TRWKR) from citizen’s point of view.
(3) Talking what should be done for continuing to clarify and clean the Horikawa river.
100 people from citizen’s survey groups and administrative parties
concerned gathered, and had some active discussions.
the weak point of an administration survey by the citizen's survey
First of the meeting, Nagoya city authorities presented the results of administrative survey.
the 4th stage, there were periods of which TRWKR be interrupted in October
and December, because of maintenance of the facilities in Nabeyaueno water purification plant and so on. And it
was reported by administrative survey which that the data of COD, DO
(dissolved oxygen), and transparency etc. measured once a month, were
wrong than the 2nd stage.
it was reported that the data of September and November when the
transmission of raw water was done were improved than last
Moreover it was reported by administrative survey that distinct improvement
of the water quality was not seen lower the Oto Bridge.
Against this, there were many reports by citizen's survey groups that distinct
improvement of the seeing through level was seen near the Oto Bridge.
with administrative survey which was done once a month, the survey of the
Horikawa-Sennin chousatai (HSC) has many samples because many people
observe the Horikawa river many times. So HSC
supplemented the administrative survey.
felt definitely the merit of the HSC is that the citizens and the
administration together can verify accurately a social experiment of
clarification the Horikawa
of the date by the citizen's survey groups
summary of the result of the survey by the citizen's survey groups ware as
1. In the 4th stage, impression of clearness, COD, transparency, smell, bubbling were improved than the 1st, 2nd and 3rd stage. So it seems that the effect of Transmission of Raw Water from the Kiso River(TRWKR) has become visible day by day.
was found that the water quality is better from autumn to early winter
than summer season( from spring to summer).
water quality in the 2nd year was improved than the 1st year in both
summer season and winter season.
Little by little, the actual condition of the color of the Horikawa River was begun to understand when the color of “light gray yellow green”, “gray yellow green”, and “gray green”, many people feel discomfort.
The number of artificial garbage (plastics, cans, glass bottles) has been decreased. It can be thought that, they are effected from the clean-up activity around the river and progress of civic awareness for clean-up the Horikawa River.
A large number of striped mullets run up this year as last year. The water quality improvement was dealt with on TV and newspaper. Then, the people who came to watch fishes and birds to the Horikawa River increased.
observation records of striped mullets of the Horikawa River 2009
7. The water-weed breeding area has increased. Also, various forms of life, e.g. dragonfly, fish, bird, and turtle, affect in these area. And an ecosystem by food chain is formed.
Horikawa River water environment was synergistically improved by recover of self
cralification capabilities of the river and so
About two years have passed since beginning of the social experiment of the revival of the Horikawa River (“TRWKR”).
was understood that; in the 2nd year, water quality including contaminated
level (visual impressions and the value of COD), transparency, smell, and
bubbles on the water surface was improved compared with the 1st
some changes in the growth environment and the actions of the organisms
were observed; e.g., increase of the growing area of water weeds, and run
of a large number of striped mullets as last year.
is considered that; the improvement of water environment in this two years
is resulted from not only direct effect of TRWKR, but also, besides,
synergistically effect of
implementation of clarification policies, revival of Horikawa River’s self cralification capabilities, and progress of awareness
for clarification on all watershed area.
our aim is further improvement of water environment in the third year and
drive heart, it is spirit network.
Also, two videos made by video group of chosatai were put on the screen.
[Heavy rain pollute the Horikawa River (record of Horikawa River on rainfall time and profile of Nagoya City’s policies for improvement of combined sewer systems)]
[Water circulate, and emotionally accessible (introduction of upper-lower exchange and efforts on all watershed area)]
Mr. Ban, one of video group member introduced his narrative. He rushed up to the scene for 10times when rain fall, however, he got only one chance; then he has been though a lot to edit short 5minutues video.
These cares were all volunteer work. And the video was produced by Mr. Ban’s spirit. Since most of gathered people were doing with same spirit, video group was given a bid hand.
While, it seemed that, people who be inspired by these spirit and refreshed spirit, were a lot.
The very aspect of network of Horikawa Sen-nin Chosatai, “heart drive heart”, was seemed to be.
The term of 5th stage is from Apr. 1st to Jun. 30th. Let’s increase the Horikawa Cheering groups, on target of 20000person.
In addition, it was agreed that; the 5th stage is from Apr. 1st to Jun. 30th, and collected data is compared with the same term of the last two years.
Also, reports on March before April will be given a welcome to, and to collect photograph data, to take pictures actively, was agreed.
Moreover, to beg of continuance of TRWKR, firstly, it is required that; Nagoya citizens should hope revival the Horikawa River strongly, and expand practical act. For that purpose, the action we can do immediately, is to appeal wide range of citizens and expand human circle of lovers of the Horikawa River, was hound a new meaning.
And the number of the Horikawa Sen-nin Chosatai, exceeds 10000 now, should be increased to the target of 20000 for next March, was agreed.
Also, below Nagoya City’s HP shows TRWKR particularly as “the social experiment for clarification of the Horikawa River”, please visit it.
Cover shot of the 4th meeting of survey groups, about 100person total of the citizen’s survey groups and related parties of administration, attended.
On the 11th floor of urban-center (meeting place), “the exhibit of Nagoya’s tomorrow thinking from the Nagoya port” was held.
Till March 15th
The activities of the Horikawa Sen-nin Chosatai, and revival of the Nakagawa canal are introduced. If you are interested in it, please visit.