Colorado River: new deals, old tensions

Lake Mead’s water level
Credit: Research Gate

Colorado River: Promise and Peril  (start time: 6:28)  For more than two decades the Colorado River has been shrinking, afflicted by climate change-induced drought, population growth, and water politics. Some 40 million people living in seven states, and 30 tribes, depend on the river.  The Upper Basin — Colorado, Utah, Wyoming and New Mexico– have been at odds with Lower Basin states – California, Nevada and Arizona — over who should do more to cut back on water use.  Meanwhile, here in Colorado, cities and towns on the Front Range have been clashing with those on the Western Slope over water from the river. After all, Front Range cities get almost half of their water from the Western Slope, through transmountain diversions. In this week’s show, host Susan Moran interviews two journalists who have been covering water issues in the West.  They recently produced a feature on a surprising new water-rights purchase that could ease west-vs-east tensions, while giving endangered fish a leg up.   Alex Hager is a reporter covering the Colorado River Basin for  KUNC and many NPR network stations. Luke Runyon is co-director of The Water Desk, an initiative of the Center for Environmental Journalism at CU Boulder. Previously he was managing editor and a reporter at KUNC.

Host/Producer: Susan Moran
Engineer: Sam Fuqua
Headline contributors: Joel Parker, Shelley Schlender
Executive Producer: Joel Parker

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From Sewage to Planet Savior?

The Power of Poop (start time: 5:41)  This potent byproduct of our digestive system holds the promise of being a big part of the solution to several public health and environmental challenges of our time, such as drinking water scarcity and degraded cropland. In this week’s show, How On Earth’s Susan Moran interviews Dr. Bryn Nelson, a science writer and former microbiologist. His debut book, called Flush: The Remarkable Science of an Unlikely Treasure, recently appeared in paperback.

Host/Producer: Susan Moran
Engineer: Alexis Kenyon
Executive Producer: Susan Moran

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Climate Change Maladaptations

Over the Seawall (start time: 7:33): One of the key things that makes us human is our ability to problem-solve.  But often our engineered fixes backfire and even make the problem we’re trying to solve much worse. How On Earth host Susan Moran interviews journalist Stephen Robert Miller about how this applies to massive seawalls, re-engineered rivers, grandiose canals (such as the Central Arizona Project) and other technological fixes that have unintended consequences.  Miller’s debut book, due out next week, is called Over the Seawall: Tsunamis, Cyclones, Drought, and the Delusion of Controlling Nature (Island Press). Check out Stephen’s upcoming book talks: Nov. 2 at CU Boulder’s ATLAS 102, 7:00-8:30 p.m.; and Nov. 28 at  Boulder Book Store,  6:30 p.m.

Host/Producer: Susan Moran
Engineer: Sam Fuqua
Executive Producer: Susan Moran
Headline contributors: Beth Bennett, Joel Parker, Shelley Schlender

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Water Reuse for the Arid West

Photo credit: WateReuse Colorado

Water Recycling for Climate Resilience (start time: 7:54) When you poured tap water into your coffee maker this morning, or flushed the toilet, you may not have been thinking about where that water came from, or where it flowed to next. Pegged to World Water Week, on this week’s How On Earth host Susan Moran interviews Austa Parker, PhD, an environmental engineer who is a consultant for the firm Brown and Caldwell on national water-reuse issues. She formerly worked for Denver Water and as an adjunct professor at CU Boulder. Our discussion focuses on direct potable reuse (DPR), the process of transforming treated wastewater, including human effluence, into drinking water. Climate change, intensifying droughts and population growth in the already parched U.S. West are pressuring states and cities to pursue DPR as a means of becoming more climate-resilient.
Resource links:
WateReuse Colorado
WateReuse Association (national)
Colorado’s regulations (passed in late 2022) on direct potable reuse

Hosts: Susan Moran, Joel Parker
Show Producer: Susan Moran
Engineer: Joel Parker
Executive Producer: Beth Bennett
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Finding Home in a Changing Climate

Unruly Planet (start time: 5:31) This week on How On Earth Susan Moran interviews science journalist Madeline Ostrander about her recently published book, At Home On An Unruly Planet: Finding Refuge On A Changed Earth. The author reflects on what it means to reimagine the concept of home, and to literally find a secure home, in this era of upheaval and change. The book, and our conversation today, explore the predicament of climate refugees as well as heroic individuals who are proactively working to preserve and recreate communities.

Hosts: Susan Moran, Joel Parker
Producer: Susan Moran
Engineer: Joel Parker
Executive Producer: Susan Moran
Headline Contributors: Beth Bennett, Shelley Schlender

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Beavers: Engineers for Our Planet

Photo credit: Chris Canipe

Today’s show features:
Employing Beavers (start time: 11:12):  Some consider them pests. Others praise them as saviors of the environment. Whatever your impression of these furry swimming rodents, beavers are gaining more proponents for their ability to make landscapes, and thus humans, more resilient to climate change. Through their dams and lodges, beavers raise water levels, moisten fire-prone forest soil, slow water speed, and thus prevent flooding while storing more water. Host Susan Moran talks with Jessica Doran, a wildlife biologist with EcoMetrics Colorado; and Aaron Hall, senior aquatic biologist with Defenders of Wildlife, about the promises and complexities of employing beavers as ecosystem engineers.
Beaver resources:
iBeaver (crowdsourcing App from Defenders of Wildlife)
How On Earth 2018 interview with Eager author Ben Goldfarb
Rewilding the American West (Ripple et al, BioScience, 2022)

Hosts: Susan Moran, Joel Parker
Show Producer: Susan Moran
Executive Producer: Beth Bennett
Headline contributors: Beth Bennett, Shelley Schlender, Tom Yulsman

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Colorado River Basin Crisis: Pt. II

Colorado River Basin Crisis Pt. II (start time: 6:19): This week’s How On Earth show focuses on the implications and future prospects after the federal government in June ordered the seven Western states that rely on the river to come up with a plan to save trillions of gallons of water from the shrinking river) — and after the August 15 deadline came and passed without a deal. (Here’s the Bureau of Reclamation’s news release.) How On Earth host Susan Moran interviews Aaron Citron, senior policy advisor with The Nature Conservancy’s Colorado chapter; and journalist Jerd Smith, editor of Fresh Water News. (For background, check out our July 26th show, Pt. I on the Basin’s Basin’s climate, drought, and overuse crisis. Also, see how you can make a difference by taking advantage of this recently signed legislation that helps Colorado residents convert their grass lawns into water-saving landscapes.)

Hosts: Susan Moran, Joel Parker
Producer: Susan Moran
Executive Producer: Beth Bennett
Headline contributors: Beth Bennett, Shelley Schlender

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Colorado River Basin Crisis

Lake Mead’s “bathtub ring” (July 2022)
Photo credit: Tom Yulsman

This week on How On Earth:
Colorado River Basin Crisis (start time: 5:31–scroll down for arrow)
The Colorado River is the life blood for about 40 million inhabitants. And it’s in dire straights. The river’s two reservoirs, Lake Mead and Lake Powell, are at historically low levels, due primarily to climate change and overuse. The water-supply crisis is affecting Colorado and six other states, as well as some 30 tribes, that rely on the Colorado River for water and electricity. Last month the federal government ordered the seven states to jointly come up with a plan to dramatically cut their consumption from the river. They have until mid-August to deliver–or they’ll face mandatory cuts. Host Susan Moran discusses with two guests the underlying causes of the water crisis, what’s at stake, and potential solutions. Jennifer Gimbel is a senior water policy scholar at the Colorado Water Center, located at Colorado State University. Formerly she was an undersecretary of the Department of Interior, and executive director of the Colorado Water Conservation Board.  Tom Yulsman is a science journalist focusing on climate change. He runs the ImaGeo visual blog for Discover magazine, and he is director of the Center for Environmental Journalism at CU Boulder.
Some relevant resources for more info and the basin’s water crisis:
*  2022 Science paper, What Will It Take To Stabilize the Colorado River?
* Fresh Water News (Water Education Colorado)
* The Water Desk

Show Host & Producer: Susan Moran
Executive Producer: Beth Bennett
Headline Contributors: Beth Bennett, Shelley Schlender

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Water in the Arid West

109a7a076e79c89746d7f0e449855d83_SToday on How on Earth, Beth replays a timely interview with Boulder author Bob Crifasi, a long time water resource manager. His book, on the history and consequences of Front Range water use, is especially relevant now during our longterm drought.Bob works in water management and planning and is an environmental scientist with over 25 yr experience. He was the Water Resources Administrator for the city of Boulder’s Open Space and Mountain Parks Dept. He has served on board of directors of 11 ditch companies and as the president of several, supervising all aspects of ditch operation. We talked about his book, A Land Made from Water.

Executive Producer:
Producer: Beth Bennett
Additional Contribution: Shelley Schlender

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Cricket Chorus // Foliage Science

This week’s How On Earth features the following two segments:

Snowy Tree Cricket. Photo credit: Scott Severs
Snowy Tree Cricket.
Photo credit: Scott Severs

Late-summer Cricket Chorus (start time: 1:02) One of the most poetic sounds of the end of summer is …. no, not your kids kicking and screaming because summer is over. It’s the sound of crickets, katydids and other melodic insects “chirping” at night. Our focus here is Snowy Tree Crickets in Colorado. They are called “temperature” crickets because you can calculate what the temperature is outside based on how many times these crickets “chirp” in a certain time period. How On Earth’s Shelley Schlender took a stroll recently with two Boulder naturalists — Steve Jones and Scott Severs — to learn more about how, and why, crickets in general make their chirping sound, and why we hear so many of them in the evenings this time of year. Some resources about crickets and their brethren: 1)  http://songsofinsects.com/  2) biology and recordings of nearly all singing Orthopterans (crickets, grasshoppers, katydids), at  Singing Insects of North America (SINA)  http://entnemdept.ufl.edu/Walker/buzz/.

Big Blue Canyon, Colo. Photo credit: Jeff Mitton
Big Blue Canyon, Colo. Photo credit: Jeff Mitton

The Science of Aspen (and other) Foliage (starts: 9:40) One of the most iconic images of Colorado is aspen groves quaking in early fall in their brilliant yellow, orange and even red hues. This year, the aspen, and many other plants, are changing colors earlier than normal. Due largely to the extended warm and dry conditions, many aspen leaves are fading and shriveling without turning bright colors. Dr. Jeff Mitton, an evolutionary biologist and a professor emeritus at the University of Colorado Boulder, talks with host Susan Moran about what dictates the timing and intensity of foliage. Dr. Mitton also writes a bimonthly column, called Natural Selections, in the Daily Camera. Here’s one (of many) on crickets.

Hosts: Maeve Conran, Susan Moran
Producer: Susan Moran
Engineer: Maeve Conran
Contributions: Shelley Schlender
Executive Producer: Susan Moran

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