Water Safety & Telemetry Disclaimer
Last updated: November 8, 2026
Important Safety Notice
Moving water, whitewater rapids, and natural river channels are inherently dangerous environments. The hydrological data, discharge charts, and condition verdicts presented on ClearGauge are provided strictly for informational and educational purposes. Never make life-safety or navigation decisions based solely on online telemetry. Always inspect river conditions visually and know your limits before putting in.
1. Provisional Nature of Real-Time USGS Data
ClearGauge aggregates real-time streamflow measurements (including discharge in cubic feet per second, stage height, and water temperature) from automated telemetry stations operated by the United States Geological Survey (USGS) and the National Oceanic and Atmospheric Administration (NOAA).
In accordance with official USGS data dissemination policies, all real-time streamflow telemetry is classified as provisional. This means:
- Unreviewed & Automated: Real-time satellite transmissions have not undergone thorough quality assurance, hydrologic verification, or field calibration by USGS hydrologists.
- Susceptible to Environmental Glitches: Gauges can report artificially high or low readings due to sensor malfunctions, frozen water intakes, ice jams, floating debris, algal fouling, or shifting riverbed gravel.
- Transmission Latency: Remote satellite gauges transmit data on 15- to 60-minute intervals. During flash floods or dam releases, actual river levels can surge drastically before the automated sensor registers and publishes the change.
- Subject to Subsequent Revision: USGS provisional data is routinely adjusted or corrected months after initial transmission during official hydrologic review.
2. Algorithmic Condition Verdicts Are Not Navigational Guarantees
ClearGauge condition verdicts (Low Flow, Normal Flow, High Water, Flood Risk) represent automated mathematical comparisons between provisional real-time flow and approved multi-decade historical percentiles for today's calendar date:
- A verdict of Normal Flow does not guarantee that a river section is safe, calm, or suitable for your skill level. A Class IV or V canyon in “Normal Flow” remains extraordinarily hazardous.
- A verdict of Low Flow does not eliminate risk; low water often exposes sharp rocks, shallow boulder gardens, pinning hazards, and strainers that are submerged at higher levels.
- A verdict of High Water or Flood Risk indicates elevated danger, powerful hydraulics, cold runoff, and potential channel contamination. Boaters and swimmers should exercise extreme caution.
3. Inherent Hazards of River Recreation
Whitewater kayaking, canoeing, rafting, paddleboarding, wading, fishing, and tubing in natural waterways carry inherent risks of severe bodily injury, hypothermia, drowning, and permanent disability. Critical hazards include:
- Strainers & Sweepers: Fallen trees, log jams, and root systems that allow water to pass through while trapping boats and swimmers underwater.
- Foot Entrapment: Wedging a foot in riverbed rocks in strong currents, which can force a swimmer underwater. Never attempt to stand in fast-moving water above knee depth.
- Cold Water Shock & Hypothermia: Snowmelt and dam-release waters often hover between 38°F and 52°F (3°C–11°C). Immersion in cold water can trigger uncontrollable gasping, immediate loss of muscle control, and rapid hypothermia.
- Dam Releases & Tailwater Surges: Hydroelectric dams can release massive volumes of water without warning, causing rivers to rise multiple feet in minutes on clear, sunny days.
- Low-Head Dams (Drowning Machines): Artificial river weirs create submerged recirculating reverse currents that trap swimmers and watercraft indefinitely.
4. Personal Responsibility & Safety Requirements
By using ClearGauge, you agree that you are solely responsible for your own safety and the safety of those under your care. You must:
- Always wear a properly fitted, Coast Guard-approved Personal Flotation Device (PFD / life jacket) designed for whitewater or paddle sports.
- Wear a dedicated whitewater helmet when paddling moving water with rocks or gradient.
- Dress appropriately for water temperature—not air temperature—using a wetsuit or drysuit when water is below 60°F (15°C).
- Physically scout blind rapids, new river stretches, and known hazard areas from the riverbank before running them.
- Obtain proper swiftwater rescue training and always paddle with a competent group equipped with throw bags, first aid kits, and communication devices.
- Consult local managing agencies (e.g. U.S. Forest Service, National Park Service, state wildlife departments, local BLM offices) for active river permits, seasonal closures, and recent wood hazard reports.
5. Complete Limitation of Liability
All information, telemetry feeds, charts, verdicts, and educational guides on ClearGauge are provided on an “as is” and “as available” basis without warranty of any kind, whether express, implied, or statutory, including warranties of accuracy, completeness, or fitness for a particular recreational purpose.
To the fullest extent permitted by applicable law, neither ClearGauge, its founders, contributors, software developers, nor data licensors shall be held liable for any direct, indirect, incidental, special, consequential, or punitive damages—including personal injury, drowning, death, emotional distress, rescue expenses, equipment loss, or property damage—arising out of or in connection with the access to, use of, or reliance upon any data or content provided on this website.
6. Emergency Situations
ClearGauge is not an emergency response dispatch service and does not monitor river conditions for live search-and-rescue operations. If you or someone in your party is in immediate danger or involved in a water emergency, immediately call 911 (or your local emergency services dispatch) or trigger an emergency satellite locator beacon (PLB/InReach).