North Fork - Somerset Daily Average Forecast Flow (ending 12z on given date) Units: CFSD Created: June 19 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, 2017-06-20,1453,1739,Daily Model Output (20170619) 2017-06-21,1416,1714 2017-06-22,1349,1592 2017-06-23,1231,1389 2017-06-24,1064,1193 2017-06-25,907,1029 2017-06-26,785,900 2017-06-27,702,812 2017-06-28,638,742 2017-06-29,572,670 2017-06-30,454,545,ESP Model Output (20170618) 2017-07-01,418,506 2017-07-02,385,469 2017-07-03,358,438 2017-07-04,335,412 2017-07-05,314,389 2017-07-06,296,368 2017-07-07,282,351 2017-07-08,268,334 2017-07-09,254,318 2017-07-10,244,306 2017-07-11,232,294 2017-07-12,221,281 2017-07-13,211,268 2017-07-14,201,256 2017-07-15,192,245 2017-07-16,185,236 2017-07-17,177,227 2017-07-18,170,221 2017-07-19,164,212 2017-07-20,157,203 2017-07-21,151,196 2017-07-22,146,189 2017-07-23,141,183 2017-07-24,135,176 2017-07-25,131,171 2017-07-26,127,169 2017-07-27,124,165 2017-07-28,120,161 2017-07-29,118,157 2017-07-30,115,154 2017-07-31,112,149 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.