SLCESPAZ NATIONAL WEATHER SERVICE COLORADO BASIN RIVER FORECAST CENTER SALT LAKE CITY, UTAH Jan 03, 2014 The following are updated forecasts for the Lake Mead Local (or intervening flow). Forecasts include monthly values for January - March and seasonal volumes for Jan - July and Apr - July. ------------------------------------------------------------------- DECEMBER OBSERVED (EST.) DATA: (From USGS gage data) - values in KAF - Dec observed (est.) (Colorado Diamond Ck 661.0 + Muddy River 2.4 + Virgin River 14.3 - Powell Release 595.0) ~ 82.7 KAF ------------------------------------------------------------------- FORECASTS (using the Ensemble Prediction System): * All Forecasts are the 50% exceedance probability value * Lake Mead Intervening Flow: January - March Forecasts January 70 KAF ( 88% of average) February 90 KAF ( 89% of average) March 100 KAF ( 92% of average) April - July Forecast: 240 KAF ( 87% of average) January - July Forecast: 500 KAF ( 88% of average) ----------------------- Tributaries: Virgin River nr Littlefield Jan 10.0 KAF ( 74% of median or 52% of average) Feb 10.0 KAF ( 72% of median or 61% of average) Mar 12.0 KAF ( 81% of median or 51% of average) Little Colorado nr Cameron Jan 1.0 KAF ( 64% of median or 6% of average) Feb 3.5 KAF ( 174% of median or 20% of average) Mar 7.0 KAF ( 34% of median or 23% of average) Paria Creek nr Lee's Ferry Jan 1.5 KAF (124% of median or 91% of average) Feb 1.7 KAF (116% of median or 88% of average) Mar 2.0 KAF (123% of median or 90% of average) * All Forecasts are the 50% exceedance probability value * CBRFC NNNN $$