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A biologist, economist, engineer and geologist walk onto a bar...
Updated: 3 hours 32 min ago

New insights into Putah Creek salmon

6 hours 34 min ago
by Malte Willmes, Anna Steel, Levi Lewis, Peter B. Moyle, and Andrew L. Rypel It’s November 2016, and we’re out in canoes on Putah Creek as part of the annual salmon survey. Just as we navigate our watercraft through a … Continue reading →

Rockin’ with the Rockfish

October 11, 2020 - 4:38pm
By Andrew L. Rypel and Peter B. Moyle California is a spoil of natural resource riches. Most times, our California waterblog busies itself with important freshwater resources issues. Yet every now and again, it is refreshing and worth turning our … Continue reading →

Happy 2021! Here’s to a New Water Year!

October 4, 2020 - 1:38am
by Jay Lund 2020 was terrible, and as a water year (WY), October 2019 – September 2020, it is over.  A dry winter (drier than 2014-2015 in Sac. Valley), COVID-19, deep recession and unemployment, wildfires, racial violence and unrest, extreme … Continue reading →

How will climate change affect the economic value of water in California?

September 27, 2020 - 8:03am
by Lorie Srivastava Climate change is affecting natural resources in California, with water being one of the most important in the state. Water source is critical for municipalities, agriculture, industry, and habitat/environmental purposes. Will future supply meet future demand? How … Continue reading →

Crawdads: Naturalized Californians

September 20, 2020 - 8:00am
By Peter Moyle Crayfish, crawdads, crawfish: whatever you call them, they are everywhere in California’s waters and are as tasty as their lobster relatives. They are especially familiar to anglers who peer into the maw of a bass or pikeminnow … Continue reading →

Seven conservation lessons I learned in government work

September 13, 2020 - 6:28pm
By Andrew L. Rypel Before joining the faculty at UC Davis, I spent the previous five years as a research scientist at the Wisconsin Department of Natural Resources in Madison, Wisconsin. Apparently this experience is somewhat rare among academics. A … Continue reading →

Losing mussel mass – the silent extinction of freshwater mussels

August 30, 2020 - 7:00am
by Andrew L. Rypel Throughout my career I’ve spent some time studying the fascinating ecology and conservation issues of freshwater mussels (Fig. 1). For me, learning about mussels has fortified a recurring theme of the natural world – that everything … Continue reading →

Old Readings on California Water

August 23, 2020 - 10:31am
by Jay Lund Today’s water struggles have deep roots. In our shared summer confinement, we hopefully have some time for some deeper reading on California water.  Here is a small collection of older writings on California water, the youngest of … Continue reading →

Fish surveys in the estuary: the whole is greater than the sum of its parts

August 16, 2020 - 8:00am
by Dylan K. Stompe, Peter Moyle, Avery Kruger, John Durand The San Francisco Estuary is a dynamic and altered estuary that supports a high diversity of fishes, both native and non-native. These species have substantial recreational, commercial, and intrinsic value … Continue reading →

SGMA and the Human Right to Water: How do submitted Groundwater Sustainability Plans address drinking water?

August 9, 2020 - 8:00am
by Kristin Dobbin, Darcy Bostic, Michael Kuo and Jessica Mendoza In 2012 California passed the Human Right to Water (AB 685) which declares all Californians have the right to safe, clean, affordable and accessible drinking water. Two years later during … Continue reading →

Drought and the Sacramento–San Joaquin Delta, 2012–2016: Environmental Review and Lessons

August 2, 2020 - 10:03am
by John R. Durand, Fabian Bombardelli, William E. Fleenor, Yumiko Henneberry, Jon Herman, Carson Jeffres, Michelle Leinfelder-Miles, Jay R. Lund, Robert Lusardi, Amber D. Manfree, Josué Medellín-Azuara, Brett Milligan, and Peter Moyle Droughts are common in California. The drought of … Continue reading →

106 Years of Water Supply Reliability

July 26, 2020 - 9:18am
by Jay Lund Water supply reliability is a major policy and management goal in California, and in the rest of the world, today and since the beginning of time.  The goals of reliable water supplies have grown from supporting human … Continue reading →

Summer Reading in the Time of Covid 19

July 19, 2020 - 7:00am
by Peter B. Moyle Tired of reading about the constant haggling over California water? Or of binge-watching old TV shows? Or, worse, watching the news as the Covid 19 virus spreads in our free country? For relief, I recommend two … Continue reading →

Can we talk? New nationwide flood maps provide opportunities for dialogue

July 14, 2020 - 1:16pm
By Kathleen Schaefer, Brett F. Sanders Why Dialogue Matters For fifty years, Flood Insurance Rate Maps (FIRMs) have unintentionally stifled conversations of flood risk. They have encouraged property-owners and governments at all levels to dwell on map details for one … Continue reading →

Initial Sampling of the Carp-DEUM Project

June 28, 2020 - 11:06am
By Kim Luke, John Durand, Rachel McConnell, Aaron Sturtevant, Nina Suzuki, Andrew L. Rypel This spring, the Carp-Dependent Urgent Management (Carp-DEUM) Project began its first round of sampling in the UC Davis Arboretum before the Covid-19 lockdown. The project has … Continue reading →

People, Agriculture, and Water in California

June 21, 2020 - 4:30pm
by Jay Lund Agriculture is California’s predominant use of managed water.  Agriculture and water together are a foundation for California’s rural economy.  Although most agriculture is economically-motivated and commercially-organized, the sociology and anthropology of agriculture and agricultural labor are basic … Continue reading →

What’s the dam problem with deadbeat dams?

June 14, 2020 - 6:00am
by Andrew L. Rypel, Christine A. Parisek, Jay Lund, Ann Willis, Peter B. Moyle, Sarah Yarnell, Karrigan Börk Damming rivers was once a staple of public works and a signal of technological and scientific progress. Even today, dams underpin much … Continue reading →

Black Lives Matter

June 1, 2020 - 6:27pm
We have elected to suspend our regular posts for this week.  Institutional racism is urgent and real, and should divert us from topics of California water at this time. The deaths of George Floyd, Breonna Taylor, Ahmaud Arbery, and countless others … Continue reading →

An Introduction to State Water Project Deliveries

May 24, 2020 - 4:49pm
By Nicole Osorio Most people in California receive some of their drinking water supply from the State Water Project (SWP). The SWP also supplies water to over 10% of California’s irrigated agriculture.  The SWP and its service area span much … Continue reading →

Drawing boundaries with DNA to improve conservation

May 17, 2020 - 7:00am
by Ryan Peek Foothill Yellow-legged Frogs have begun to spawn, laying small snow-globe sized egg masses in streams and rivers. They are one of the few stream-breeding frogs endemic to California and Oregon. This species is a good indicator of … Continue reading →