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Updated: 5 hours 57 min ago

Living with non-native fishes in California requires using the right words

August 8, 2021 - 7:50am
by Peter Moyle Everywhere you go in California, people live in landscapes where non-native species are conspicuous:  European grasses turning the hills golden, earthworms tilling our garden soil, exotic trees providing shade, bullfrogs jumping into backyard ponds, starlings making tight … Continue reading →

The California Water Model: Resilience through Failure

August 1, 2021 - 5:29am
by Nicholas Pinter, Jay Lund, Peter Moyle This is a slightly-edited re-posting from May 5, 2019. A review of 170 years of water-related successes in California suggests that most successes can be traced directly to past mistakes.  California’s highly variable … Continue reading →

Experimental Habitats for Hatchery Delta Smelt

July 25, 2021 - 6:45am
by Peter Moyle The Delta smelt is either extinct in the wild or close to it; in the past year only a handful have been caught, with great effort. In contrast, the UC Davis Fish Conservation and Culture Laboratory (FCCL) … Continue reading →

California’s Missing Forecast Flows in Spring 2021 – Challenges for seasonal flow forecasting

July 18, 2021 - 6:06am
by John Abatzoglou, Anna Rallings, Leigh Bernacchi, Joshua Viers, Josué Medellín-Azuara California’s 2021 water outlook became grimmer this spring as the state did not get fabulous February or miracle March precipitation. Unsurprisingly, spring streamflow forecasts from snowfed basins in the … Continue reading →

California isn’t running out of water; it’s running out of cheap water

July 11, 2021 - 7:46am
by Wyatt Arnold A California water myth which becomes especially pernicious in droughts is that California is “running out of water” (Hanak et al. 2009). Viewing California’s supply and demand pressures in terms of fixed water requirements perpetuates this myth … Continue reading →

California isn’t running out of water; it’s running out of cheap water

July 11, 2021 - 5:32am
by Wyatt Arnold A California water myth which becomes especially pernicious in droughts is that California is “running out of water” (Hanak et al. 2009). Viewing California’s supply and demand pressures in terms of fixed water requirements perpetuates this myth … Continue reading →

Home is where the habitat is

July 4, 2021 - 5:49am
 by Dylan Stompe, Teejay O’Rear, John Durand, and Peter Moyle             The San Francisco Estuary (estuary) is sometimes called the most invaded estuary in the world, and for good reason. Through many avenues, hundreds, if not thousands, of species have … Continue reading →

Drought Makes Conditions Worse for California’s Declining Native Fishes

June 27, 2021 - 6:52am
by Peter Moyle and Andrew Rypel California is home to 131 kinds of native fishes that require freshwater for some or all of their life-cycle. Most of these fishes are found only in California and most (81%) are in decline … Continue reading →

Mitigating Domestic Well Failure for SGMA and Drought in the San Joaquin Valley

June 20, 2021 - 6:12am
by Rob Gailey and Jay Lund Domestic wells serve sizable potable water demands in California and much of the world. These wells tend to degrade and fail with declining regional groundwater levels. In areas of irrigated agriculture, impacts to shallower … Continue reading →

Ecosystem Restoration and Water Management

June 13, 2021 - 5:57am
– Curated by Jennifer Cribbs (jecribbs@ucdavis.edu) Note from the Curator: Restoration implies returning to a prior state. A broken cup carefully glued, might appear nearly as whole as the original, but will always differ from the original.  Ecosystem restoration attempts … Continue reading →

Jobs and Irrigation during Drought in California

June 6, 2021 - 8:32am
Jobs and Irrigation during Drought in California Farmworkers harvesting cauliflower in Monterey County. Photo by John Chacon/California Department of Water Resources by Josué Medellín-Azuara and Jay Lund During droughts organizations and stakeholders look for ways of getting the most from every water … Continue reading →

Assessing portfolios of actions for winter-run salmon in the Sacramento Valley

May 29, 2021 - 2:30pm
by Francisco Bellido Leiva, Robert Lusardi and Jay Lund  We may be entering a time when more mechanistic models can be used to estimate relationships of habitats and flows to fish populations and health, and help design ecosystem restoration efforts. … Continue reading →

Dollars and Drought – Windfalls for innovation or entrenchment?

May 23, 2021 - 6:49am
by Jay Lund California’s Governor Newsom recently declared a drought emergency throughout much of California and announced over $5 billion in new water program investments.  These twin emergency and funding announcements are a classic “bad-news creates good news story” (and … Continue reading →

A few Lessons for California’s New Drought

May 16, 2021 - 6:21am
We asked some colleagues for lessons that might be useful in managing the California’s new drought. Here is a first sampling of thoughts. 1: Market-based approaches to water management will lessen the costs of drought. Katrina Jessoe. Agricultural and Resource … Continue reading →

Art and Water Management – Randomness and Patterns

May 9, 2021 - 9:01am
curated by Abbey Hill Much of water management draws on patterns involving randomness. This is typically done in building models based on organizing equations, but has some relevance to art. The following is a collection of art that relates randomness … Continue reading →

Art and Water Management – Randomness and Patterns

May 9, 2021 - 6:24am
curated by Abbey Hill Much of water management draws on patterns involving randomness. This is typically done in building models based on organizing equations, but has some relevance to art. The following is a collection of art that relates randomness … Continue reading →

Do largemouth bass like droughts?

May 2, 2021 - 6:15am
By Andrew L. Rypel “The Delta is full of species that thrive in the lakes in southern Arkansas” ~Bill Bennett by Andrew Rypel As we rapidly enter another drought, long-standing questions on ecological impacts of increased temperatures, reduced water levels … Continue reading →

How dry is California? What should we prepare for?

April 25, 2021 - 7:00am
by Jay Lund California is in the second year of a drought. Governor Newsom this week made his first drought declaration.   Just how dry is this drought, so far?  What are some likely implications?  And what might State and … Continue reading →

Suisun Marsh fishes in 2020: Persistence during the Pandemic

April 18, 2021 - 9:31am
by Teejay O’Rear, John Durand, Peter Moyle Suisun Marsh is central to the health of the San Francisco Estuary. Not only is it a huge (470 km2) tidal marsh in the center the northern estuary (Figure 1), but it is an … Continue reading →

Increasing groundwater salinity changes water and crop management over long timescales

April 11, 2021 - 7:00am
by Yiqing “Gracie” Yao and Jay Lund Salinity has often become a major limit for irrigated agriculture in semi-arid regions, from ancient Mesopotamia to parts of California today. A previous blog post showed that conjunctive use with more saline groundwater … Continue reading →