Dayflow
Dayflow is a computer program developed in 1978 as an accounting tool for determining historical Delta boundary hydrology. It presently provides the best estimate of historical mean daily flows: (1) through the Delta Cross Channel and Georgiana Slough; (2) past Jersey Point; and (3) past Chipps Island to San Francisco Bay (net Delta outflow). The degree of accuracy of Dayflow output is affected by the Dayflow computational scheme and the accuracy and limitations of the input data. The input data include the principal Delta stream inflows, Delta precipitation, Delta exports, and Delta gross channel depletions. Both monitored and estimated values are included as described in this Dayflow program documentation. Currently, flows are not routed to account for travel time through the Delta. All calculations involving inflows, depletions, transfers, exports, and outflow are performed using data for the same day. All Dayflow summary reports distributed through January 1985, providing flow data through August 1984, and data for September 1984 reported herein were generated according to the algorithm described in the Computational Scheme section.
Data files
Data title and description | Access data | File details | Last updated |
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Dayflow Results 2023 Dayflow is a computer program developed in 1978 as an accounting tool for determining historical Delta boundary hydrology. It presently provides the best estimate of historical mean daily flows: (1) through the Delta Cross Channel and Georgiana Slough; (2) past Jersey Point; and (3) past Chipps Island to San Francisco Bay (net Delta outflow). The degree of accuracy of Dayflow output is affected by the Dayflow computational scheme and the accuracy and limitations of the input data. The input data include the principal Delta stream inflows, Delta precipitation, Delta exports, and Delta gross channel depletions. Both monitored and estimated values are included as described in this Dayflow program documentation. Currently, flows are not routed to account for travel time through the Delta. All calculations involving inflows, depletions, transfers, exports, and outflow are performed using data for the same day. All Dayflow summary reports distributed through January 1985, providing flow data through August 1984, and data for September 1984 reported herein were generated according to the algorithm described in the Computational Scheme section. | Download | CSV | 02/21/24 |
Dayflow Monthly Totals 2023 Dayflow is a computer program developed in 1978 as an accounting tool for determining historical Delta boundary hydrology. It presently provides the best estimate of historical mean daily flows: (1) through the Delta Cross Channel and Georgiana Slough; (2) past Jersey Point; and (3) past Chipps Island to San Francisco Bay (net Delta outflow). The degree of accuracy of Dayflow output is affected by the Dayflow computational scheme and the accuracy and limitations of the input data. The input data include the principal Delta stream inflows, Delta precipitation, Delta exports, and Delta gross channel depletions. Both monitored and estimated values are included as described in this Dayflow program documentation. Currently, flows are not routed to account for travel time through the Delta. All calculations involving inflows, depletions, transfers, exports, and outflow are performed using data for the same day. All Dayflow summary reports distributed through January 1985, providing flow data through August 1984, and data for September 1984 reported herein were generated according to the algorithm described in the Computational Scheme section. | Download | CSV | 02/21/24 |
Dayflow Results 2022 Dayflow is a computer program developed in 1978 as an accounting tool for determining historical Delta boundary hydrology. It presently provides the best estimate of historical mean daily flows: (1) through the Delta Cross Channel and Georgiana Slough; (2) past Jersey Point; and (3) past Chipps Island to San Francisco Bay (net Delta outflow). The degree of accuracy of Dayflow output is affected by the Dayflow computational scheme and the accuracy and limitations of the input data. The input data include the principal Delta stream inflows, Delta precipitation, Delta exports, and Delta gross channel depletions. Both monitored and estimated values are included as described in this Dayflow program documentation. Currently, flows are not routed to account for travel time through the Delta. All calculations involving inflows, depletions, transfers, exports, and outflow are performed using data for the same day. All Dayflow summary reports distributed through January 1985, providing flow data through August 1984, and data for September 1984 reported herein were generated according to the algorithm described in the Computational Scheme section. | Download | CSV | 08/11/23 |
Dayflow Monthly Totals 2022 Dayflow is a computer program developed in 1978 as an accounting tool for determining historical Delta boundary hydrology. It presently provides the best estimate of historical mean daily flows: (1) through the Delta Cross Channel and Georgiana Slough; (2) past Jersey Point; and (3) past Chipps Island to San Francisco Bay (net Delta outflow). The degree of accuracy of Dayflow output is affected by the Dayflow computational scheme and the accuracy and limitations of the input data. The input data include the principal Delta stream inflows, Delta precipitation, Delta exports, and Delta gross channel depletions. Both monitored and estimated values are included as described in this Dayflow program documentation. Currently, flows are not routed to account for travel time through the Delta. All calculations involving inflows, depletions, transfers, exports, and outflow are performed using data for the same day. All Dayflow summary reports distributed through January 1985, providing flow data through August 1984, and data for September 1984 reported herein were generated according to the algorithm described in the Computational Scheme section. | Download | CSV | 08/11/23 |
Dayflow Results 2021 Dayflow is a computer program developed in 1978 as an accounting tool for determining historical Delta boundary hydrology. It presently provides the best estimate of historical mean daily flows: (1) through the Delta Cross Channel and Georgiana Slough; (2) past Jersey Point; and (3) past Chipps Island to San Francisco Bay (net Delta outflow). The degree of accuracy of Dayflow output is affected by the Dayflow computational scheme and the accuracy and limitations of the input data. The input data include the principal Delta stream inflows, Delta precipitation, Delta exports, and Delta gross channel depletions. Both monitored and estimated values are included as described in this Dayflow program documentation. Currently, flows are not routed to account for travel time through the Delta. All calculations involving inflows, depletions, transfers, exports, and outflow are performed using data for the same day. All Dayflow summary reports distributed through January 1985, providing flow data through August 1984, and data for September 1984 reported herein were generated according to the algorithm described in the Computational Scheme section. | Download | CSV | 08/11/23 |
Dayflow Monthly Totals 2021 Dayflow is a computer program developed in 1978 as an accounting tool for determining historical Delta boundary hydrology. It presently provides the best estimate of historical mean daily flows: (1) through the Delta Cross Channel and Georgiana Slough; (2) past Jersey Point; and (3) past Chipps Island to San Francisco Bay (net Delta outflow). The degree of accuracy of Dayflow output is affected by the Dayflow computational scheme and the accuracy and limitations of the input data. The input data include the principal Delta stream inflows, Delta precipitation, Delta exports, and Delta gross channel depletions. Both monitored and estimated values are included as described in this Dayflow program documentation. Currently, flows are not routed to account for travel time through the Delta. All calculations involving inflows, depletions, transfers, exports, and outflow are performed using data for the same day. All Dayflow summary reports distributed through January 1985, providing flow data through August 1984, and data for September 1984 reported herein were generated according to the algorithm described in the Computational Scheme section. | Download | CSV | 08/11/23 |
Dayflow Results 2020 Dayflow is a computer program developed in 1978 as an accounting tool for determining historical Delta boundary hydrology. It presently provides the best estimate of historical mean daily flows: (1) through the Delta Cross Channel and Georgiana Slough; (2) past Jersey Point; and (3) past Chipps Island to San Francisco Bay (net Delta outflow). The degree of accuracy of Dayflow output is affected by the Dayflow computational scheme and the accuracy and limitations of the input data. The input data include the principal Delta stream inflows, Delta precipitation, Delta exports, and Delta gross channel depletions. Both monitored and estimated values are included as described in this Dayflow program documentation. Currently, flows are not routed to account for travel time through the Delta. All calculations involving inflows, depletions, transfers, exports, and outflow are performed using data for the same day. All Dayflow summary reports distributed through January 1985, providing flow data through August 1984, and data for September 1984 reported herein were generated according to the algorithm described in the Computational Scheme section. | Download | CSV | 08/11/23 |
Dayflow Monthly Totals 2020 Dayflow is a computer program developed in 1978 as an accounting tool for determining historical Delta boundary hydrology. It presently provides the best estimate of historical mean daily flows: (1) through the Delta Cross Channel and Georgiana Slough; (2) past Jersey Point; and (3) past Chipps Island to San Francisco Bay (net Delta outflow). The degree of accuracy of Dayflow output is affected by the Dayflow computational scheme and the accuracy and limitations of the input data. The input data include the principal Delta stream inflows, Delta precipitation, Delta exports, and Delta gross channel depletions. Both monitored and estimated values are included as described in this Dayflow program documentation. Currently, flows are not routed to account for travel time through the Delta. All calculations involving inflows, depletions, transfers, exports, and outflow are performed using data for the same day. All Dayflow summary reports distributed through January 1985, providing flow data through August 1984, and data for September 1984 reported herein were generated according to the algorithm described in the Computational Scheme section. | Download | CSV | 08/11/23 |
Dayflow Results 2019 Dayflow is a computer program developed in 1978 as an accounting tool for determining historical Delta boundary hydrology. It presently provides the best estimate of historical mean daily flows: (1) through the Delta Cross Channel and Georgiana Slough; (2) past Jersey Point; and (3) past Chipps Island to San Francisco Bay (net Delta outflow). The degree of accuracy of Dayflow output is affected by the Dayflow computational scheme and the accuracy and limitations of the input data. The input data include the principal Delta stream inflows, Delta precipitation, Delta exports, and Delta gross channel depletions. Both monitored and estimated values are included as described in this Dayflow program documentation. Currently, flows are not routed to account for travel time through the Delta. All calculations involving inflows, depletions, transfers, exports, and outflow are performed using data for the same day. All Dayflow summary reports distributed through January 1985, providing flow data through August 1984, and data for September 1984 reported herein were generated according to the algorithm described in the Computational Scheme section. | Download | CSV | 08/11/23 |
Dayflow Results 1929 - 1939 | Download | CSV | 08/11/23 |
Dayflow Results 1940 - 1949 | Download | CSV | 08/11/23 |
Dayflow Results 1950 - 1955 | Download | CSV | 08/11/23 |
Dayflow Results 1956 - 1969 | Download | CSV | 08/11/23 |
Dayflow Results 1970 - 1983 | Download | CSV | 08/11/23 |
Dayflow Results 1984 - 1996 | Download | CSV | 08/11/23 |
Dayflow Results 1997 - 2023 | Download | CSV | 03/27/24 |
dayflowCalculations1997 | Download | CSV | 08/11/23 |
dayflowCalculations1998 | Download | CSV | 08/11/23 |
dayflowCalculations2006 | Download | CSV | 08/11/23 |
dayflowCalculations1999 | Download | CSV | 08/11/23 |
dayflowCalculations2000 | Download | CSV | 08/11/23 |
dayflowCalculations2001 | Download | CSV | 08/11/23 |
dayflowCalculations2002 | Download | CSV | 08/11/23 |
dayflowCalculations2004 | Download | CSV | 08/11/23 |
dayflowCalculations2005 | Download | CSV | 08/11/23 |
dayflowCalculations2005 | Download | CSV | 08/11/23 |
dayflowCalculations2007 | Download | CSV | 08/11/23 |
dayflowCalculations2008 | Download | CSV | 08/11/23 |
dayflowCalculations2009 | Download | CSV | 08/11/23 |
dayflowCalculations2010 | Download | CSV | 08/11/23 |
dayflowCalculations2011 | Download | CSV | 08/11/23 |
dayflowCalculations2012-05-23-2013 | Download | CSV | 08/11/23 |
dayflowCalculations2012x_10-25-2013 | Download | CSV | 08/11/23 |
dayflowCalculations2013_12-13-2013 | Download | CSV | 08/11/23 |
dayflowCalculations2013x_2-20-2015 | Download | CSV | 08/11/23 |
dayflowCalculations2014_11-24-2014 | Download | CSV | 08/11/23 |
dayflowCalculations2014a_9-24-2015.csv | Download | CSV | 08/11/23 |
dayflowCalculations2015 | Download | CSV | 08/11/23 |
dayflowCalculations2016 | Download | CSV | 08/11/23 |
dayflowCalculations2017 | Download | CSV | 08/11/23 |
dayflowCalculations2018 | Download | CSV | 08/11/23 |
Dayflow | Download | CSV | 08/11/23 |
2012Comments_12-12-13 | Download | CSV | 08/11/23 |
Supporting files
Data title and description | Access data | File details | Last updated |
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Dayflow Comments 2023 Metadata for Water Year 2022-2023 | PDF | 02/21/24 | |
Dayflow Comments 2022 Metadata for Water Year 2021-2022 | PDF | 08/11/23 | |
Dayflow Comments 2021 Metadata for Water Year 2020-2021. | PDF | 08/11/23 | |
Dayflow Comments 2020 Metadata for Water Year 2019-2020. | PDF | 08/11/23 | |
Dayflow Comments 2019 Metadata for Water Year 2018-2019. | PDF | 08/11/23 | |
Dayflow documentation 1955-1984 Documentation for Dayflow for the time period, 1955 - 1984. | PDF | 08/11/23 | |
Dayflow Documentation 1997 through present | PDF | 08/11/23 | |
2004comments | PDF | 08/11/23 | |
2005comments | PDF | 08/11/23 | |
2008Comments | PDF | 08/11/23 | |
2010Comments | PDF | 08/11/23 | |
2010DayFlowUpdate_Corection | PDF | 08/11/23 | |
2011Comments | PDF | 08/11/23 | |
2012CommentsCorrection_6_18_12 | PDF | 08/11/23 | |
2012Update_102513 | PDF | 08/11/23 | |
2013_Comments_update_02_18_14 | PDF | 08/11/23 | |
2013_CommentsCorrection_5_23_13 | PDF | 08/11/23 | |
2013CommentsCorrection_3_15_13 | PDF | 08/11/23 | |
2013Update_022015 | PDF | 08/11/23 | |
2014_comments | PDF | 08/11/23 | |
2014Update_082415 | PDF | 08/11/23 | |
2015Comments | PDF | 08/11/23 | |
2015Update_050317 | PDF | 08/11/23 | |
2016Comments | PDF | 08/11/23 | |
Water Year 2007 Comments | DOCX | 08/11/23 | |
Water Year 2008 Comments | DOCX | 08/11/23 | |
water_year_2015_metadata_update | PDF | 08/11/23 | |
2018Comments | PDF | 08/11/23 | |
2017Comments | PDF | 08/11/23 |