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NVCA

NVCA > Watershed Science > Low Water Forecasting

Low-Water Forecasting

The NVCA monitors the watershed for low-water situations.  Depending on the water level, the Authority may issue the following low water status levels.

Normal

 Level 1

  • Precipitation criteria = less than 80 % of 3-month average precipitation
  • Streamflow criteria = monthly flow less than 70 % of the lowest average summer month flow

 Level 2

  • Precipitation criteria = less than 60 % of 3-month average precipitation
  • Streamflow criteria = monthly flow less than 50 % of the lowest average summer month flow

 Level 3

  • Precipitation criteria = less than 40 % of 3-month average precipitation
  • Streamflow criteria = monthly flow less than 30 % of the lowest average summer month flow