Access real-time still images from over 10,000 river cameras nationwide. Track rainfall intensity with intuitive color-coded rain clouds and view detailed weather forecasts. Stay informed about weather conditions and potential flood risks.
3.0.0
October 27, 2026
いつも御利用頂き、ありがとうございます。 今回のアップデート内容は以下のとおりです。 ・処理の軽量化等の動作改善対応を行いました。 皆様のご要望にお応えできるよう日々改善を進めて参ります。 今後ともよろしくお願いします。
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Yes, River contains advertisements. This is common for free applications that offer extensive data and features.
River is available on iPhone and iPad devices running iOS 13.0 or later.
The latest version of River is 3.0.0, last updated on October 27, 2026. Updates are provided to enhance functionality and address user feedback.
River has an age rating of 4+, making it suitable for a wide range of users.
Yes, River allows you to mark and access your favorite locations for quick weather and river information checks.
River uses color-coded rain clouds to indicate rainfall intensity. Light rain is shown in light blue or blue, while heavy rain is depicted in red.
River offers comprehensive weather data including daily weather, hourly precipitation probability, weekly forecasts, and 10-day forecasts for nationwide locations.
River is free to download and use, with the option for in-app purchases to enhance the user experience.
