Official map services published by all 47 prefectures — placing the start of inquiry in your own prefecture, before the national primary data of layer B.
The prefectural disaster portal run by the Hokkaido Government Crisis Management Bureau. It gathers shelter-opening status by municipality, evacuation orders, weather warnings, and earthquake information, and lets you check evacuation sites on a map or as a list.
A forest map system published by the Hokkaido Government Fisheries and Forestry Department. Sub-compartment boundaries of privately owned forests covered by the regional forest plan can be browsed over base maps or aerial photographs, together with tree species, stand age, and restricted-forest status. It works on smartphones and tablets.
The prefectural disaster information portal run by the Aomori Prefectural Government Crisis Management Bureau. Alongside guidance on checking hazard maps, it gathers information drawn from the prefecture's disaster GIS, such as evacuation sites and major medical institutions.
A catalogue site for finding open data held by Aomori Prefecture and its municipalities in one place. Users can also register public-interest data of their own, and the catalogue includes GIS-ready datasets such as forest resource statistics.
Iwate Prefecture's public GIS. Layers from several fields — crime incidence, erosion-control GIS content such as landslide hazard zones, and designated-road maps — can be stacked on a single map. Municipal websites within the prefecture also point here for checking landslide risk areas.
An electronic map from Iwate Prefecture for finding barrier-free and universal-design facilities from the map itself. It runs on the same prefectural GIS platform as the Iwate Digital Map.
A page where Iwate Prefecture gathers walking maps from around the prefecture as part of its health-promotion work, leading through to courses created by individual municipalities.
The prefectural disaster portal run by the Miyagi Prefectural Government Crisis Management Department. It provides earthquake information and road-restriction information in real time, and doubles as the entrance to field-specific systems such as the prefecture's erosion-control and river-basin information systems.
Miyagi Prefecture's forest GIS, publishing map layers related to forests such as mountain-disaster risk districts, protection forests, and orthophotos. Layers can be switched on and off on the web map.
The map view of the Akita Prefecture open data portal. Data held by the prefecture can be visualised on a map, and is also distributed in GIS-ready formats such as zipped shapefiles.
The prefecture's forest GIS service, publishing forest information for privately owned forests in Akita — compartments and sub-compartments, forest plan maps and the like. Forests covered by the regional forest plan can be checked on the map.
A cultural-property map published by Yamagata Prefecture, showing the locations of archaeological sites (buried cultural property areas) together with nationally and prefecturally designated, nationally registered, and nationally selected cultural properties. GIS data export was added in January 2026.
The comprehensive river and erosion-control information site run by the Yamagata Prefectural Government Public Works Department. The prefecture is divided into seven districts, and water levels, rainfall, and live camera images can be checked from the map.
A web forest GIS publishing geographic information on forests and forestry in Fukushima Prefecture. For forests covered by the regional forest plan, locations can be checked readily by tree species and stand age.
The prefectural disaster portal run by the Disaster Countermeasures Division of the Fukushima Prefectural Government. It brings shelter information together with weather and disaster information in one place, and together with the prefecture's disaster website serves as the entrance to hazard maps.
A prefecture-wide integrated GIS built and operated jointly by Ibaraki Prefecture and every municipality within it. Map information held separately by the prefecture and by municipalities is published together on one electronic map, covering administrative information, everyday-life information, events, and tourism. It went into service in fiscal 2008.
A municipality-by-municipality list of the "Ibaraki Health Road" walking courses designated by Ibaraki Prefecture for health promotion, chosen so that everyone from children to older people can walk them safely. They can also be found on a map through the Ibaraki Digital Map.
Tochigi Prefecture's new integrated map system, in service since 11 March 2026. It brings disaster information and public-facility information — previously separate — onto a single map, covering hazard maps, real-time rainfall and river-level observations, real-time road and river camera images, the Tochigi cycle routes, major congestion points, and urban planning information such as land-use zoning. The former Tochigi map information system closed on 31 March 2026.
A site introducing walking courses selected by Tochigi Prefecture. It carries 167 courses across the prefecture and can be searched by municipality, with distance, walking time, and characteristics given for each course.
Gunma Prefecture's integrated GIS for residents. Information the prefecture holds on safety and security, along with practical everyday information, is placed on an electronic map. Many fields are published — tourism facilities, environment, welfare, healthcare, disaster preparedness — with both desktop and smartphone versions.
The tourism digital map on Gunma Prefecture's official tourism site — a digital version of the prefectural tourism map introducing sights and attractions across Gunma. Spots are presented by theme (hot springs, nature, food, traditional culture), and landmarks in each area appear as illustrations on the map itself.
Walking courses supervised by Gunma Prefecture, with course maps arranged by the prefecture's four regions — central, northern, western, and eastern Gunma.
An integrated GIS where geographic information held by Saitama Prefecture — hazard maps, barrier-free maps and more — is browsable across seven categories such as childcare and daily life, and healthcare and welfare. Multiple maps can be overlaid, and most can be downloaded as CSV, Excel, or shapefiles. The service opened on 30 January 2024.
On the site of Saitama Prefecture's health mileage programme, a list of walking courses recommended by individual municipalities. Tokorozawa, Tsurugashima, Moroyama, Yokoze, Satte, Kasukabe and others appear, and some courses are refreshed with the seasons.
The prefecture's integrated map site, publishing Chiba's administrative and regional information online through maps and imagery. It holds maps across many fields, including urban planning information and buried cultural property areas, and since April 2022 data can also be downloaded across 24 categories such as the locations of prefectural institutions.
A walking map created by Chiba Prefecture's dietary improvement volunteers, who picked roads that are easy to use and easy to walk locally and built courses of roughly 10,000 steps each. There are 102 courses in all, with step counts, distances, and times given for the whole route and for each landmark segment. Copies can also be consulted at the Chiba Prefectural Archives.
A page on which the health promotion division of the Chiba Prefectural Government gathers the walking maps individual municipalities have made for themselves, to be used alongside the prefecture's own walking map.
An integrated map that gathers the map services held by the Tokyo Metropolitan Government's many bureaus into a single site, run jointly by the Bureau of Digital Services and GovTech Tokyo. Ten map layers spanning disaster preparedness, environment and nature, digital services, welfare, and waterworks can be freely combined and stacked on one screen. Three ready-made themes — protecting yourself from summer heat, preparing for an earthquake, and preparing for flooding — open with the relevant maps already combined. Layers include the Tokyo Heat Map, the Tokyo Damage Estimate Map, emergency water supply stations, TOKYO FREE Wi-Fi, and projected inundation areas. The full release began on 20 August 2026.
A portal run by the Tokyo Metropolitan Government Bureau of Public Health that gathers walking courses created by wards, cities, and other bodies into one place. 555 courses are registered and can be searched by municipality, by major rail line, or by purpose. Each course carries estimates of distance, walking time, calories burned, and step count, with the conversion assumptions (4 km/h, 70 cm per step, 60 kg body weight) stated on the site. Features such as "Tokyo Machi-sanpo" and "Try walking for 10 minutes", plus a search for what lies around each course, are included. An English version is available.
The viewer for the Digital Twin Realisation Project led by the Tokyo Metropolitan Government Bureau of Digital Services. Tokyo's buildings and streets are reproduced in 3D in cyberspace, and live river camera footage, real-time Toei bus data, and open data from metropolitan bureaus can be overlaid on the 3D city model. Alongside 3D city models of the special wards and the Tama area, it carries underground models of Shinjuku Station East and Tokyo Station. Three-dimensional point cloud data for the ward area (DSM, 0.25 m grid, microtopography renderings and four more, seven types in all) is free for secondary use for any purpose.
The Tokyo Metropolitan Government's official map for finding shelters and evacuation areas across the city. Alongside names and locations, it shows each shelter's opening status and crowding level during a disaster using five-step icons. Pages are available in several languages.
A service from the Tokyo Metropolitan Government Bureau of Urban Development publishing the main urban planning information for Tokyo on a map. Areas where plans have been decided — land-use zones, planned urban roads, urban rapid transit railways — can be browsed as schematic location maps.
A platform run by the Tokyo Metropolitan Government Bureau of Digital Services to promote the circulation and use of open data across Tokyo. It publishes GIS data for urban planning decisions (shapefiles produced by the Bureau of Urban Development, based on Tokyo's 1:2,500 topographic maps and the JGD2011 coordinate system), GIS data on greenery, and projected inundation area data.
The prefecture's integrated map site for viewing Kanagawa's map information online. It holds thematic maps across many fields — prefectural facilities, projected inundation areas, location maps of privately owned forests covered by the regional forest plan. Urban planning information is shown too, though for the exact land-use designations the site directs you to each city or town.
The map delivery service of the Kanagawa Prefecture open data catalogue, presenting the prefecture's open data in map form. A companion "Kanagawa Open Data 3D Map" is published on a subdomain of the same catalogue.
The walking-road information pages within "Kenko Niigata 21", the health promotion portal of the Niigata Prefectural Government's Health and Welfare Department, introducing walking courses across the prefecture.
A page where the Erosion Control Division of the Niigata Prefectural Government publishes the landslide hazard zones and special landslide hazard zones it has designated, along with the underlying survey results, as GIS data covering the whole prefecture. The zone data can be taken out as geographic information.
The prefecture's GIS site, publishing map information to which Toyama Prefecture holds the copyright. Three prefectural offices — lifelong learning and cultural properties, nature conservation, and environmental preservation — share the same map information, displayed over GSI base tiles.
The walking map on "Toyama Health Lab", the Toyama Prefectural Government's health promotion portal, introducing walking courses both indoors and outdoors.
A real-time river information system run by the River Division of the Ishikawa Prefectural Government Public Works Department. Water levels, rainfall, dam figures, weather, and landslide information are shown both as an overview map and as tables, with alerts issued when hourly or cumulative rainfall, or flood-risk water levels, are exceeded.
The digital map on Ishikawa Prefecture's official tourism site, run by the Ishikawa Prefecture Tourism League. Sightseeing spots, food, and accommodation across the prefecture can be browsed on the map and filtered by interest or means of travel.
A comprehensive river and erosion-control information system run by the Fukui Prefectural Government Public Works Department, providing a landslide hazard zone management system, flood hazard information, flood hazard maps, and landslide hazard maps on a map.
A system in which Fukui Prefecture publishes information on roads designated under the Building Standards Act on a map, opened up to make administrative information easier to grasp.
The WebGIS operated by Yamanashi Prefecture. It offers many layers — landform classification maps, borehole logs with ground and soil-test data, index maps, address search, and landmark search for police stations, public facilities, fire stations and railway stations. Smartphone and lightweight versions are available.
The map content on Yamanashi Prefecture's official tourism information site, run by the Yamanashi Tourism Organization. Tourism information can be explored with an overview map of the prefecture. The same site also publishes walking maps such as a guide to Yamanashi's castles and residences, and features on strolling and walking.
The integrated GIS run by the Planning and Promotion Department of the Nagano Prefectural Government. Bureaus inside the prefectural office share map information while also publishing it to residents online, covering mountain-disaster risk districts, steep-slope collapse risk points, designated landslide zones, erosion-control designated land, evacuation facilities, and forest-related information. Features include split-screen display, layer transparency, route search, KML export, and GPS location and address or facility search on the smartphone version.
A collection of walking courses compiled by the Health and Welfare Department of the Nagano Prefectural Government from 270 routes recommended by the prefecture's 64 municipalities, arranged by region and by municipality. Each course is classed as flat, slightly undulating, or undulating, with regional pages for Saku, Josho, Suwa and others.
A prefecture-wide integrated map site publishing Gifu's administrative and regional information online through maps and imagery. It falls under the prefecture's Information Systems Division, with operation and maintenance by the Gifu Prefectural Construction Research Center, and is used jointly by the prefecture and its municipalities. Layers across many fields, such as landslide hazard zones, can be displayed. Published maps may be copied and adapted provided the source is credited as "(c) Gifu Prefecture".
The map view of the landslide information portal published by Gifu Prefecture, where designated landslide hazard zones, special hazard zones, and other risk points can be checked on a map.
A page on which the Health Promotion Division of the Gifu Prefectural Government gathers entry points to walking courses created by the prefecture's municipalities — bridging to their courses rather than building its own.
The resident-facing public GIS within Shizuoka Prefecture's integrated geographic information system, which comprises an internal GIS and a public one. In service since 1 April 2011 as "Everyone's Hazard Map", it carries road ledgers, urban planning maps, landslide hazard zone maps and much more, under a policy of opening as much of it as data as possible.
An integrated GIS in which Aichi Prefecture places its location-related geographic information on an electronic map for residents and businesses. Layers are grouped under headings such as living and safety, learning and leisure, and prefectural administration, and can be combined freely into your own map. It holds landslide hazard zones, storm-surge inundation projections, tsunami hazard zones, and flood history maps, and also publishes a red relief image map.
A site making the geographic information published on Map Aichi downloadable in machine-readable formats such as GIS-ready zipped shapefiles.
A service in which Mie Prefecture publishes location-related information over base maps. GIS was introduced in fiscal 2002, the service has run as Mie Click Maps since fiscal 2013, and it was renewed in fiscal 2019. Multiple maps are available through a map gallery, and open data can be downloaded from the data catalogue. The map information is provided under CC BY 4.0.
Walking maps published by "Mie no Rekishi Kaido", Mie Prefecture's cultural site, carrying course maps for walking the province's historical highways.
A disaster information map system published by Shiga Prefecture. The system includes a GIS data download page, from which data can be taken out in shapefile format.
An integrated GIS in which Kyoto Prefecture and every municipality within it publish their map information together through a single system, in service since 1 February 2008. Alongside shelter, AED, and emergency medical maps, it carries a wide range of location data including World Cultural Heritage sites and bear sightings. On smartphones and tablets, GPS centres the search for facilities on where you stand. Desktop, mobile, and smartphone versions are provided.
A system in which Osaka Prefecture publishes urban planning information and cultural property information on a map for the prefecture excluding Osaka City and Sakai City. It is operated as part of the prefecture's project management.
Hyogo Prefecture was the first in Japan to publish high-precision 3D geospatial data (point clouds) at 1 m mesh covering its entire area, with finer 50 cm mesh data released for mountainous districts.
Hyogo Prefecture publishes information on road categories under the Building Standards Act and related matters on an online map.
A system in which Nara Prefecture publishes disaster risk information such as landslide hazard zones on a map (formerly the landslide disaster prevention information system), managed by the erosion control and disaster prevention section of the prefectural land management department.
The prefecture's integrated map system publishing the geographic information Wakayama Prefecture holds. It includes 3D point cloud data and a 3D web viewer, and since 1 March 2023 point cloud data from airborne laser surveying covering roughly 65% of the prefecture's area has been released as open data. Layers such as privately owned forest areas can also be viewed.
An inter-municipal integrated GIS launched in 2026 through cooperation between Tottori Prefecture and 13 municipalities within it. It carries data across many fields at once: tourism, events, childcare support, a bear sighting map, cultural properties, disaster preparedness, crime and accidents, public facilities, medical facilities, environment, and forests.
A system in which Tottori Prefecture provides regional and administrative information online through maps. Alongside public facilities and municipal offices, hospitals and waste treatment facilities can also be found.
A web GIS for searching and browsing administrative map information from Shimane Prefecture and its municipalities. Built as the prefecture's integrated GIS, it gathers map information from across the prefectural government — welfare, disaster preparedness, agriculture and forestry — and can display it over base maps or aerial photographs. Residents can also contribute map information of their own. The underlying topographic and road network data is published on Shimane data eye.
A prefecture-wide integrated GIS built by Okayama Prefecture and in service since April 2002. It publishes disaster information (shelters, suitable helipad sites, rainfall and water-level or tide gauges), seismic intensity maps, liquefaction risk maps, tsunami inundation projections, projected inundation areas, landslide hazard zones, land use, ground data, irrigation ponds, cultural properties, and EV charging facilities. An "Okayama Original Map" feature lets you build your own map over aerial photographs or base maps.
A portal run by the Erosion Control Division of the Hiroshima Prefectural Government that provides, on a map, landslide risk locations together with the hazard zones and special hazard zones designated under the Sediment Disaster Prevention Act.
A portal on which Yamaguchi Prefecture maps the landslide hazard zones and special landslide hazard zones it has designated on the basis of survey. Evacuation sites and facilities used by people needing assistance are shown alongside them.
A system in which Yamaguchi Prefecture provides rainfall, water level, and landslide warning information on a map, together with rain gauges, water-level gauges, dams, simplified water-level gauges, and river surveillance cameras.
The comprehensive portal for maps published by Tokushima Prefecture. It offers a range of maps in one stop and can display several of them stacked together. Locations such as emergency power equipment for use during disasters are included.
An integrated map system published by Kagawa Prefecture. It offers layers for roads, disaster preparedness (inundation, landslides, seismic intensity maps, liquefaction risk projections), the Embankment Regulation Act, and municipal boundaries, and can use OpenStreetMap as a backdrop.
A site on which Ehime Prefecture provides information about urban planning and embankment regulation within the prefecture on an accessible online map.
An information map on sediment disasters published by the Public Works Department of the Ehime Prefectural Government, letting you check on a map where landslide risk lies.
The disaster mapping published by Kochi Prefecture. It carries flood and landslide disaster maps, projected inundation areas for designated rivers, landslide hazard and special hazard zones, mountain-disaster risk districts, and designated erosion-control, landslide, and steep-slope areas — along with a three-dimensional hazard map.
A system through which Fukuoka Prefecture presents the varied information it holds on an online map for residents. Two base maps — Google Maps and the national digital base map — can be switched between. Thematic maps include prefectural institutions and prefectural facilities.
A site on which Saga Prefecture publishes its disaster and emergency information online through maps. The prefecture also runs a separate river system, "Suibo-kun", for water-level gauges and advance traffic restrictions.
The river and erosion-control information system run by Nagasaki Prefecture. It provides rainfall, river level, and landslide information, dam data, flood risk distribution maps, and real-time camera images on a map, with a smartphone version also published.
A service launched on 1 April 2024 that brings disaster and tourism information onto a single map. Data held by the prefecture, municipalities, and private operators is displayed together, and it is operated jointly by Kumamoto Prefecture and its municipalities (21 of them in fiscal 2025). It follows the platform standards recommended nationally and exchanges data through APIs.
A system through which Oita Prefecture publishes online the maps showing the locations of landslide hazard zones and related areas.
Overlay open data on GSI maps, aerial photos, geological maps, and 3D terrain visualizations.
A map showing the landslide hazard zones, special hazard zones, and landslide risk locations within Kagoshima Prefecture. The prefecture also publishes rainfall, water level, and weather information, along with the snake-curve diagrams that set the criteria for issuing landslide warnings.
A site on which Okinawa Prefecture publishes regional and administrative information online through maps, covering the locations of administrative institutions, prefectural housing, prefectural urban parks, municipal information, and tsunami inundation projections. GIS data download became available in fiscal 2020, and on 8 March 2023 a policy on using geospatial information within the system was adopted. A prefectural GIS open data catalogue is also provided.