SLCESPAZ NATIONAL WEATHER SERVICE COLORADO BASIN RIVER FORECAST CENTER SALT LAKE CITY, UTAH Aug 17, 2016 The following are updated forecasts for the Lake Mead Local (or intervening flow). Forecasts include monthly values for Aug - Oct. ------------------------------------------------------------------- Aug 1-14 OBSERVED DATA (est.): (From USGS gage data) - values in KAF - Aug 1-14 observed (Colorado Diamond Ck 496.3 + Muddy River 1.0 + Virgin River 4.3 - Powell Release 415.7) ~ 85.9 KAF ------------------------------------------------------------------- Aug 1-14 Observed Intervening Flow into Lake Mead ~ 42.2 KAF ------------------------------------------------------------------- FORECASTS (using the Ensemble Prediction System): * All Forecasts are the 50% exceedance probability value * Lake Mead Intervening Flow: Aug - Oct Forecasts Aug 108 KAF (126% of average) Sep 60 KAF ( 65% of average) Oct 57 KAF ( 76% of average) Lake Mead Adjusted Forecast Intervening Flow: Aug - Oct Forecasts Aug 101 KAF (117% of average) Sep 48 KAF ( 51% of average) Oct 28 KAF ( 38% of average) ----------------------- Tributaries: Virgin River nr Littlefield Aug 10.8 KAF (140% of median or 120% of average) Sep 4.5 KAF ( 67% of median or 51% of average) Oct 7.0 KAF ( 64% of median or 62% of average) Little Colorado nr Cameron Aug 10.5 KAF (102% of median or 52% of average) Sep 2.6 KAF ( 24% of median or 19% of average) Oct 0.3 KAF ( 21% of median or 4% of average) Paria Creek nr Lees Ferry Aug 2.2 KAF (119% of median or 97% of average) Sep 1.4 KAF (105% of median or 76% of average) Oct 1.2 KAF ( 82% of median or 61% of average) * All Forecasts are the 50% exceedance probability value * CBRFC NNNN $$