Sameura Dam Monitor icon

Sameura Dam Monitor

tecogonaz
Science & Education
Version
1.0.0-beta.4
Size
9.0 MB
Requires
Android API 34+
4.7 / 5 · 5,663 ratings 34,370 downloads

Updated Oct 16, 2026

Quick answer

Storage rates and related data for 125 dams in Japan including Sameura Dam

TCSameuraDamMonitor fetches dam data published by the Ministry of Land, Infrastructure, Transport and Tourism (MLIT) Hydrological and Water Quality Database and displays storage rates and related data for 125 dams in Japan, including Sameura Dam.

Features: * Real-time data — fetches and stores real-time data, showing storage rate, storage volume, inflow, discharge and basin-average rainfall * Storage rate messages — displays status and messages based on the storage rate, customizable * Historical data — fetches and stores past data for any period, with offline search (Sameura Dam only) * Interactive graphs — graphs for real-time and historical data (rainfall/storage rate, storage volume/inflow/discharge) * Home screen widget — check the real-time storage rate and message at a glance * Auto update and notifications — background real-time data fetching and storage change notifications

Data sources: The app fetches official dam data published by the Ministry of Land, Infrastructure, Transport and Tourism (MLIT) of Japan. Real-time data is fetched by default via sudmonitor (https://sudmonitor.kusugami-lab.net), a self-hosted, non-official caching relay of the same MLIT data; the official MLIT sources can be selected instead in the app settings. Daily historical data is provided through the sudmonitor relay only. This app contains no ads, trackers or analytics.

Anti-Feature (NonFreeNet): the default connection to the self-hosted sudmonitor relay is classified as a non-free network service.

Screenshots

Sameura Dam Monitor screenshot 1
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Sameura Dam Monitor screenshot 8

What’s new

Keep notification setting off by default and request permission only when enabling auto-update or alerts.

How to install

  1. Download the APK from the button at the top of this page.
  2. Allow “Install unknown apps” for your browser or file manager only, not for every app.
  3. Open the downloaded file and confirm the installation.
  4. If installation fails with “App not installed,” remove an earlier build of the same app first. A signature conflict is the usual cause.

Data safety

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  • Files are scanned for malware on every update.
  • The permissions each app requests are listed on its own page.
  • Read the full safety policy for how we test, flag, and delist files.

Frequently asked questions

What is Sameura Dam Monitor?
Storage rates and related data for 125 dams in Japan including Sameura Dam
Who develops Sameura Dam Monitor?
Sameura Dam Monitor is developed by tecogonaz.
Which Android version does Sameura Dam Monitor require?
Sameura Dam Monitor requires Android API 34 or later.
What is the current version of Sameura Dam Monitor?
The synchronized F-Droid version is 1.0.0-beta.4.
Which license does Sameura Dam Monitor use?
The signed F-Droid metadata lists Apache-2.0.
Where is the source code for Sameura Dam Monitor?
https://codeberg.org/tecogonaz0439/TCSameuraDamMonitor-android

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