-Model Soil Moisture/Observed Streamflow...
Soil moisture
for most of the upper basins in the San Juan were below average last fall. This was most likely due
to limited monsoonal precipitation over the summer months. Observed streamflow for the month of March
was mostly below average for the lower San Juan while the upper portions saw
above to much above average flows due to
above normal temperatures in early March.
-Snowpack/Precipitation...
Snow water equivalent
for the entire San Juan Basin on April 1st was 90 percent of average.
Precipitation over the San Juan Basin for March was a dismal 45% of average. Because of this, seasonal
precipitation for the San Juan Basin dropped to 95 percent of average.
-Short Term Precipitation Forecast...The forecast models through the middle of April suggest a slight probability of above
average precipitation for the San Juan Basin.
-General Discussion...Due to the below average soil moiture in the upper basin this fall and the combination of current snowpack
conditions and low March monthly precipitation, the median April-July forecast for the San Juan Basin is 85 percent of average. This is a 15 percent drop
from last month's forecast.
Differences between the full period forecasts and the residual forecasts may not exactly equal the actual observed volumes due to rounding conventions (see Definitions section).