SLCESPCO National Weather Service Colorado Basin River Forecast Center Salt Lake City, Utah December 15, 2016 San Juan Basin Special Forecast Group December Mid-Month Forecasts Seasonal and Monthly forecasts for 2016/2017. Forecast volumes in thousands of acre-feet (KAF) Exceedance probabilities in percent. Animas - Durango FORECAST 90% 50% 10% Dec 11.0 12.0 14.0 Jan 10.0 11.0 13.0 Feb 9.0 10.0 12.0