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  • HOME
  • LOGIN
  • FEATURES
  • PRICES
  • GET STARTED
  • TESTIMONIALS
  • RainIQ
  • OUR DATA
  • FAQ
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NPDES Compliance

Accurate Rainfall Data for NPDES Compliance

 Stormwater permits under the National Pollutant Discharge Elimination System (NPDES) require defensible documentation of qualifying rain events. Manual gauges and scattered online sources can introduce uncertainty—especially when validating 0.1", 0.25", 0.5", or 1.0" storm thresholds.

WaterWatch PRO delivers timestamped, site-specific totals backed by National Weather Service (NOAA) systems, helping ensure your stormwater reporting meets federal and state audit standards.

Meet Key NPDES Rainfall Requirements

 

NPDES-regulated facilities must maintain rainfall logs that withstand audit scrutiny. WaterWatch PRO helps you:

  • Verify qualifying storm events
     
  • Track multi-day storm totals
     
  • Document dry-weather periods
     
  • Support SWPPP and BMP evaluations
     
  • Maintain historical rainfall archives
     

Every rainfall value is tied to your site coordinates and powered by NOAA’s MRMS system for high-confidence compliance reporting.

Built for Stormwater Teams

 

Whether you oversee a single facility or a multi-site portfolio, WaterWatch PRO helps stormwater teams:

  • Reduce manual logging
     
  • Capture defensible rainfall records
     
  • Maintain consistent, audit-ready documentation
     
  • Simplify internal SWPPP communication
     
  • Improve inspection planning
     

Your rainfall data is available instantly and stored securely for long-term compliance needs.

Start Your Free 30-Day Trial

Get audit-ready rain for GPS locations.
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