河川地図

This app displays maps, rainfall data, water quality, observation stations, flood information, sediment data, and addresses. It utilizes data from the Ministry of Land, Infrastructure, Transport and Tourism and the Geospatial Information Authority of Japan.

1. [Map] displays a standard map, satellite imagery, and topographic map of your current location.

Touching [mail] allows you to send the URL of your current location's map and address via email, letting family and friends know your location. Please use this for emergency contact during disasters.

Turning the [GPS switch] ON (green) activates the location sensor, displaying your current latitude, longitude, and address.

Touching [Register] registers the displayed address data in the database.

2. [Rainfall] displays rainfall information.

3. [Water Quality] displays water quality and temperature at observation stations.

4. [Observation Stations] displays water level, rainfall, water quality, and the location of river cameras.

5. [Flood] displays flood/inland water hazard maps and evacuation shelters.

6. [Sediment] displays landslide hazard maps and evacuation shelters.

7. [Address] displays the current location's latitude, longitude, postal code, prefecture, city/ward/town/village, town, block, house number, building number, city/ward/town/village pronunciation, and town pronunciation.

8. [List] is a list of addresses registered in the database. Registered addresses can be sorted by date, latitude, longitude, and address. Maps and other information can be displayed from registered addresses. Registered addresses can be backed up in JSON format using DB Export and restored using DB Import, so please use this when changing devices.