North Fork - Somerset Daily Average Forecast Flow (ending 12z on given date) Units: CFSD Created: June 26 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, 2017-06-27,728,872,Daily Model Output (20170626) 2017-06-28,650,770 2017-06-29,572,668 2017-06-30,506,578 2017-07-01,454,509 2017-07-02,415,467 2017-07-03,384,433 2017-07-04,358,405 2017-07-05,336,381 2017-07-06,316,359 2017-07-07,305,374,ESP Model Output (20170625) 2017-07-08,289,355 2017-07-09,273,337 2017-07-10,259,321 2017-07-11,246,306 2017-07-12,234,292 2017-07-13,223,279 2017-07-14,213,267 2017-07-15,203,255 2017-07-16,194,245 2017-07-17,186,235 2017-07-18,178,228 2017-07-19,171,219 2017-07-20,164,211 2017-07-21,158,203 2017-07-22,152,195 2017-07-23,146,190 2017-07-24,141,183 2017-07-25,136,178 2017-07-26,133,174 2017-07-27,129,169 2017-07-28,125,164 2017-07-29,122,160 2017-07-30,118,160 2017-07-31,115,153 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.