SLCESPAZ NATIONAL WEATHER SERVICE COLORADO BASIN RIVER FORECAST CENTER SALT LAKE CITY, UTAH Oct 17, 2016 The following are updated forecasts for the Lake Mead Local (or intervening flow). Forecasts include monthly values for Oct - Dec. ------------------------------------------------------------------- Oct 1-15 OBSERVED Volumes (est.): (From USGS gage data) - values in KAF - Oct observed (Colorado Diamond Ck 323.2 + Muddy River 1.1 + Virgin River 3.1 - Powell Release 297.8) ~ 29.6 KAF ------------------------------------------------------------------- Oct 1-15 Observed Intervening Flow into Lake Mead ~ 50.9 KAF ------------------------------------------------------------------- FORECASTS (using the Ensemble Prediction System): * All Forecasts are the 50% exceedance probability value * Lake Mead Intervening Flow: Oct - Dec Forecasts Oct 58 KAF ( 77% of average) Nov 43 KAF ( 75% of average) Dec 48 KAF ( 79% of average) Lake Mead Adjusted Forecast Intervening Flow: Sep - Nov Forecasts Oct 29 KAF ( 39% of average) Nov 10 KAF ( 18% of average) Dec 15 KAF ( 25% of average) ----------------------- Tributaries: Virgin River nr Littlefield Oct 7.0 KAF ( 64% of median or 62% of average) Nov 7.6 KAF ( 65% of median or 63% of average) Dec 8.0 KAF ( 66% of median or 59% of average) Little Colorado nr Cameron Oct 2.2 KAF (153% of median or 31% of average) Nov 0.1 KAF ( 26% of median or 3% of average) Dec 0.5 KAF ( 79% of median or 11% of average) Paria Creek nr Lees Ferry Oct 1.5 KAF (102% of median or 77% of average) Nov 1.3 KAF (101% of median or 95% of average) Dec 1.2 KAF (103% of median or 96% of average) * All Forecasts are the 50% exceedance probability value * CBRFC NNNN $$