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Preview of RiverWatch

RiverWatch by MrJordanRoth

Near real-time NOAA river stage levels, streamflow rates, and 3-day hydrograph trends.

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About this extension
Stay updated on local river conditions instantly without searching complex web pages. RiverWatch brings near real-time NOAA river stage levels, discharge streamflow rates, and 3-day trend charts directly to your Chrome toolbar.

Whether you are planning a kayaking trip, checking fishing conditions, or keeping an eye on rising flood waters near your home, RiverWatch gives you the critical water data you need in a single click.

KEY FEATURES

• Live Toolbar Icon Badge: View the current river stage height directly on your browser icon. The badge color updates automatically based on official NOAA flood severity (Normal, Action, Minor, Moderate, or Major Flood).
• Interactive 3-Day Hydrograph: Hover over the high-resolution trend chart to inspect precise stage measurements and exact observation timestamps over the past 72 hours.
• Stage & Streamflow Metrics: Get instant access to current gauge height (ft) and discharge streamflow rates (kcfs).
• Official NOAA Flood Thresholds: Displays station-specific Action, Minor, Moderate, and Major flood stage levels at a glance.
• Custom Station Selection: Monitor any 5-character NOAA/NWSLI river gauge in the United States (e.g., WLGW2, PITP1).
• Dark & Light Themes: Clean visual design that seamlessly adapts to Dark Mode, Light Mode, or your System Default settings.
• Lightweight & Fast: Built on Manifest V3 with smart 15-minute local caching to deliver instantaneous popup load times without slowing down your browser or draining battery.

HOW TO USE
  1. Click ⚙ Settings to enter your local 5-character NWSLI gauge code (e.g., WLGW2).
  2. Click the RiverWatch icon anytime to check current water conditions and 3-day trends.
  3. Click ↗ NOAA to open the official full webpage for your selected station.
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Permissions and data

Optional permissions:

  • Access your data for api.water.noaa.gov

Data collection:

  • The developer says this extension doesn't require data collection.
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Version
1.0.3
Size
491.72 KB
Last updated
4 days ago (Sep 3, 2026)
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License
MIT License
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