North Fork - Somerset Daily Average Forecast Flow (ending 12z on given date) Units: CFSD Created: July 02 2017 DAILY LOCAL: deterministic forecast flow with no contribution from Paonia DAILY TOTAL: deterministic forecast flow with Paonia current operations (official forecast on CBRFC website) ESP LOCAL: 50% exceedance forecast flow based on climatology with no contribution from Paonia ESP TOTAL: 50% exceedance forecast flow based on climatology with Paonia passing flow DATE,LOCAL,TOTAL, 2017-07-03,448,543,Daily Model Output (20170702) 2017-07-04,405,486 2017-07-05,372,437 2017-07-06,345,396 2017-07-07,323,364 2017-07-08,304,344 2017-07-09,287,325 2017-07-10,272,309 2017-07-11,258,294 2017-07-12,245,280 2017-07-13,222,272,ESP Model Output (20170701) 2017-07-14,212,260 2017-07-15,202,249 2017-07-16,193,239 2017-07-17,185,229 2017-07-18,177,220 2017-07-19,170,212 2017-07-20,163,204 2017-07-21,157,197 2017-07-22,151,190 2017-07-23,145,184 2017-07-24,140,179 2017-07-25,135,173 2017-07-26,131,169 2017-07-27,127,166 2017-07-28,123,161 2017-07-29,120,157 2017-07-30,117,153 2017-07-31,113,149 SPECIFIC SITE NOTES: GENERAL NOTES: - Days 1-10 are from the CBRFC deterministic model. This uses 5 days of precipitation forecasts and 10 days of temperature forecasts. These are updated daily and will change as the weather forecast changes, so there is increasing uncertainty past days 3-5. - Days 11 and beyond are from the Ensemble Prediction Model (ESP). This model is driven primarily by climatology for the 1981-2015 period. This guidance is probabilistic and used the 50% exceedance value. It is best to use this as a possible pattern of flow into the future as opposed to an exact value that will occur. - An abrupt change in guidance may occur at the switch from the daily model to the ESP model, some possible reasons are: - The daily model is using a temperature forecast that is either much above or below normal before reverting to normal temperatures in ESP. - If there is regulation (reservoirs, diversions, etc.) above the forecast point there may be differences between the two runs in how they are being handled. Please check with CBRFC forecasters for details on specific forecast points.