Tag: William Fleenor
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Episode 2: “Unraveling the Knot” Water Movement in the Sacramento-San Joaquin Delta – Tidal Forces
By William Fleenor, Amber Manfree, and Megan Nguyen Tides are the biggest driver of Delta flows, and in Episode 2 we look at their impacts in different locations under a variety of inflow conditions. Tides have a twice-daily cycle in the region, with a range of about six feet at Martinez. In the first part…
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Reality Check of California Water Fix Model results in a Critical Flow Year
by William Fleenor In 2008 a group from the Center for Watershed Sciences (including this author), joined by an economist from the Public Policy Institute, published findings that suggested that an alternative conveyance for Sacramento River water might improve ecological conditions in the Delta and improve reliability for Delta water exports [1, 2]. The original…
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Drought Water Right Curtailment – Analysis, Transparency, and Limits
By Jay Lund, Ben Lord, Andrew Tweet, Wesley Walker, Chad Whittington, Reed Thayer, Jeff Laird, Quinn Hart, Nicholas Santos, William Fleenor, Julia Pavicic, Lauren Adams, and Bradley Arnold Drought often means not having enough water to satisfy all water-right holders. Assessing which water-right holders should curtail their use and by how much is not simple. …
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Episode 3: “Unraveling the Knot” Water Movement in the Sacramento-San Joaquin Delta – Managing Flows
By William Fleenor, Amber Manfree, and Megan Nguyen Delta water diversions have significant effects on flows and water quality within the Delta. Diversions can re-direct river flows and draw salt water inland from the sea, impacting water quality and the environment. Episode 3 explores how water diversion quantity affects in-Delta flow directions and quantities. This…
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Episode 1: “Unraveling the Knot” Water movement in the Sacramento-San Joaquin Delta
By Bill Fleenor, Amber Manfree, and Megan Nguyen In 2010, John DeGeorge of RMA, Inc used animated model results to illustrate specific flow and water quality issues in the Delta to the State Water Board. The Center for Watershed Sciences, working with John and using RMA software, has assembled a series of narrated animations to…
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Water and salt exports from the Delta – A tale of two plots
By Jay Lund and William Fleenor Where does water exported from the Delta come from? And where does the salt in Delta exports come from? Water and salt exported from the Delta comes from several sources: Sacramento River (largest high-quality source) (Sac) San Joaquin River discharge (usually modest flow, but much saltier from agricultural drainage)…
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Innovations in floodplain modeling: A test-drive on the Yolo Bypass
High-resolution simulation of 2006 flooding in Yolo Bypass Video shows a swollen Sacramento River spilling over the Fremont weir into the 57,000-acre floodway. Notice that the floodwaters spread through individual irrigation ditches and drains, the blue hues darkening as levels rise. Hydraulic models need such fine detail when the acreage at stake is relatively small –…
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Reconciling wild things with tamed places – a future for native fish species in the Delta
Peter Moyle, William Bennett, John Durand, William Fleenor, Jay Lund, Jeffrey Mount, University of California – Davis Ellen Hanak, Public Policy Institute of California, San Francisco Brian Gray, University of California – Hastings School of Law Today, the Public Policy Institute of California released two reports that look at how California can better manage the…