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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 descriptionAccess dataFile detailsLast updated

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.

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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.

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CSV
08/11/23

Dayflow Results 1929 - 1939

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08/11/23

Dayflow Results 1940 - 1949

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08/11/23

Dayflow Results 1950 - 1955

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08/11/23

Dayflow Results 1956 - 1969

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08/11/23

Dayflow Results 1970 - 1983

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CSV
08/11/23

Dayflow Results 1984 - 1996

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CSV
08/11/23

Dayflow Results 1997 - 2023

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CSV
03/27/24

dayflowCalculations1997

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08/11/23

dayflowCalculations1998

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08/11/23

dayflowCalculations2006

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08/11/23

dayflowCalculations1999

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08/11/23

dayflowCalculations2000

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08/11/23

dayflowCalculations2001

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08/11/23

dayflowCalculations2002

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08/11/23

dayflowCalculations2004

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08/11/23

dayflowCalculations2005

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08/11/23

dayflowCalculations2005

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08/11/23

dayflowCalculations2007

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08/11/23

dayflowCalculations2008

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08/11/23

dayflowCalculations2009

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08/11/23

dayflowCalculations2010

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08/11/23

dayflowCalculations2011

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08/11/23

dayflowCalculations2012-05-23-2013

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08/11/23

dayflowCalculations2012x_10-25-2013

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08/11/23

dayflowCalculations2013_12-13-2013

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08/11/23

dayflowCalculations2013x_2-20-2015

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08/11/23

dayflowCalculations2014_11-24-2014

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08/11/23

dayflowCalculations2014a_9-24-2015.csv

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08/11/23

dayflowCalculations2015

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08/11/23

dayflowCalculations2016

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CSV
08/11/23

dayflowCalculations2017

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CSV
08/11/23

dayflowCalculations2018

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08/11/23

Dayflow

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08/11/23

2012Comments_12-12-13

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CSV
08/11/23

Supporting files

Data title and descriptionAccess dataFile detailsLast updated

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

API endpoint

Dataset Name

Use the query web API to retrieve data with a set of basic parameters. Copy the API endpoint you need to start.

Usage documentation