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