Low cost, Long life, Localized
3L Water Level Gauge
Japanese government’s leading project
- Measureriver level only duringflood
→ Communication cost reduction
- Technologicaldevelopmentof batteries and telecom equipment
→ Installation cost: Less than 1 million yen per gauge
Data Management and Transmission
Installation on sites
3L Water Level Gauge was developed through the innovative river engineering project
promoted by MLIT* of Japan
Now being installed in about 3,000 stations of MLIT-managed rivers
and 5,800 stations of medium to small rivers in Japan.
Communication
Module
Water Level Gauge
Web Application
<Monitor Mode>
(power saving)
<MeasurementMode>
(In case of flooding)
Power Saving by Mode Switching
Measurement
every
10 mins
Reporting
once a day
Cloud
Non-contact type (attached to bridge)
Contact type
✓ Localized: - Local river authorities are able to measureand monitor water level on their own
- Long time maintenancefree
(More than 5 years operation without power supply)
*Ministry of Land, Infrastructure, Transport and Tourism
Reporting
every
5 – 10 mins
Measurement
every
5 - 10 mins
Cloud Cloud
Conventional river station
(more facilities needed)
✓ Long life:
✓ Low cost:
Control
Module
Contact Information
Foundationof River & basin Integrated Communications(FRICS)
NISSAY Hanzoumon Bldg, 1-3 KojimachiChiyoda-ku
Tokyo 102-8474, JAPAN TEL +81-3-3299-8171,FAX +81-3-3239-2434
InfrastructureDevelopmentInstitute(IDI)
Plaza Edogawabashi3F, 23-6, Skiguchi1-chome,Bunkyo-ku,
Tokyo 114-0014, JAPAN TEL +81-3-5227-4100, FAX +81-3-5227-4109
E-mail 2bu01@idi.or.jp
Information Provision (compatible for both PC and Smartphone)
Places and Objectives to Install
Inundation
Sensor
Critical Facilities such as Pumping
Stations and Sluicegates
Existing Water
Level Station
MidstreamDamSmall and
Medium Rivers
To detect water logging
To make observation mesh finer To measure in-flow and out-flow
To support operation of
pumping stations and sluicegates
Lateral profile of the current river
level, showing the risk stage of
flooding
Current and past river
levels, showing the
trend of river level rise
(Image) (Image)
Up and
Downstream
https://www.river.go.jp/e/BMKGLive image from CCTV camera,
showing the condition of river and
flood plain
(Image)
Flood Prone Area
Back-up of existing
water level stations
Slide to show the land elevation in the area
Probable Inundation Area Map
layer is displayed
River Office
Local Gov.
Headquarter
To make observation mesh finer