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Applicableprinciple

Multifaceted Management and Utilization of Rivers through
Visualization and 3D Modeling
Program Manager: Akio Doi (Professor, Faculty of Software and Information Science, Iwate Prefectural University)
Program Members: Mamoru Sai (Nishiwaga Freshwater Fisheries Cooperative/Environmental Restoration Council)
Masahiro Harada (Tac Engineering)
Tsuyoshi Kobayashi, Takayuki Yokouchi (Ricoh Japan Corp.)
Kenji Sakakibara, Hirotaka Tsukinokizawa (TOKU PCM Co., Ltd.)Principle 9: A commitment to promoting sustainability through education

1. Overview

construction work, etc. that occur at various points along theriver into this map to post such information in a centralized

Aiming to develop a map that can visualize and display various
information on rivers (360-degree images, 3D models, point
cloud data, numerical information, etc.), this research project
team selected GIS which served as a platform and acquired
data. A basin geometric map was created using the selected
ArcGIS, and the data display function was verified.

2. Background and Purpose
For the Waga River in Nishiwaga Town, Iwate Prefecture, webuilt a technical foundation by cross-sectionally investigating
various technologies with the aim of creating a map that canbe used in a multifaceted manner using the river as a field.
The following seven issues are to be solved by this map.
(1) Tourism promotion: Stay-at-home tourism as a countermeasure against COVID-19(2) D isaster prevention: Flood and landslide disasters, landscape
improvement of riparian forests, monitoring of river facilities
and erosion control sediment volume, and raising awarenessof disaster prevention

manner in the future(7) C lean energy: Feasibility test of small hydroelectric power
generation utilizing water resources in a multifaceted manner

3. Method and Progress
We acquired and built data by obtaining 360-degree photos
using RICOH's THETA V, using point cloud data (aggregateof 3D spatial coordinates) from drones and terrestrial laser
measuring device, and creating 3D models using Autodesk's
3dsMax.
For the research and selection of a platform, we gathered
information and discussed within the team, and selected theone which can display 360-degree photos, 3D models, point
cloud data, etc., and operate quickly when displaying on asmartphone or tablet on site.
In order to publicize and introduce the above technicalexamples, training, and their results, we held the “3DTechnology Utilization Forum ONLINE - Reconstruction
Acceleration Forum 2020 -" participated by companies in theprefecture related to 3D technologies.

(3) Nature education: Underwater images of river basin organisms
and vegetation, natural (water) circulation, etc.
(4) Environmental protection: Understanding upstream forest
environments and the distribution of garbage in inland rivers,
which are the source of marine garbage, and also allowing forthe appropriate management of fishing grounds(5) Welfare:

Experiencing

naturethroughvirtualrealitywill

considerirrespective of age or physical handicap(6) C ross-sectoral

information

sharing:

We

4. Results Obtained
In 2020, with the cooperation of Iwate Prefectural University
and local companies, the following data was acquired andintegrated and displayed on a GIS (Geographic Information
System) which served as data platform [Figures 1 and 2], andwe developed trial website to make the information publiclyavailable.

incorporating chronological information on events, disasters,CG[Figure 1] Basin geometric map

7Point cloud360
degreeimage[Figure 2] Displaying 360-degree images, point cloud data, and 3D CG model[Figure 3] Measurement of submerged forest by drone and ground laser[Figure 4] Sediment volume measurement result by drone and Yuda Check Dam with lowered water levels[Figure 5] Yuda Check Dam point cloud data

[Figure 6] Kawamachizukuri planning model

As the GIS which serves as a platform for the basin geometricmap, through research and discussions with participating
cooperating organizations, we adopted ArcGIS with goodcompatibility with three-dimensional data, which is importantfor this theme.
The data built on ArcGIS was also built as an application,
and we verified that the application works smoothly on mobile
terminals such as smartphones and tablets.
As this year's activities, we created integrated data on a trial
basis using ArcGIS as a platform and shared the possibilities
of advanced technologies with participating companies. In

8addition, we researched and examined the feasibility of thebasin geometric map that is currently being envisioned from atechnical perspective.
Among the constructed
data, the CG model of theKawamachizukuri (town planning along the river) plan, andthe submerged forest point cloud data was shared with theMinistry of Land, Infrastructure, Transport and Tourism aswell as Nishiwaga Town, and the point cloud data of the checkdam, which was originally acquired for the dam dredging
plan, was shared with the Ministry of Land, Infrastructure,Transport and Tourism.