The utterly avoidable, terrifying and still potentially catastrophic failures of the spillways of North America's highest dam—California's 170 foot, earth-filled Oroville—could, with the right national leadership, awaken America to the urgency of investing in our physical safety and future—our infrastructure.
Sixty years old, Oroville single handedly provides one-third of the water for all of Southern California. It is on the verge of failure, because an under designed emergency spillway began to erode away the face of the dam when used for the first time. Three counties and 220,00 people have been evacuated; much of California's agriculture faces parched fields after one of the heaviest rainfall years on record. The state's water establishment refused to armor the emergency channel with concrete because "it was too expensive"—perhaps $10-20 million. They justified their recklessness by assuming that if the emergency spillway was needed, the emergency in question would be mild, timid and well-behaved. The main function of the dirt spillway was to provide a false sense of security to the public. No one knew if it would really work or much cared. Experts blithely asserted it would never be needed. Now we know. It was and it doesn't.
188,000 Flee as 'Wall of Water' Threatens Northern California https://t.co/GxAiUwNOar— Robert F. Kennedy Jr (@Robert F. Kennedy Jr)1487009718.0
America's bridges, dams, highways, mass transit systems, drinking water supplies, sewers, levees, ports and other vital public support systems face similar challenges and pose similar risks. Of 84,000 major dams in the U.S., 14,000 are rated as being "high-hazard" if they fail. The foundations of our economy and our communities are eroding beneath us just like the muddy face of the Oroville Dam.
The agencies and regulators charged with ensuring that our physical infrastructure works often shill for shoddiness and short-cuts. Often maligned environmental "obstructionists" are the frequently outshouted defenders of doing it right.
Oroville Dam was only approved by the voters of California after a devastating Feather River flood swept through Oroville in 1955; it was sold as a public safety measure. The real driver was the desire of development interests in arid Southern California to tap the rivers of the wetter north. Even presented as flood protection, the dam barely received voter approval. To keep costs down, the emergency spillway, designed to handle overflow waters from the severe rainfall events, wasn't clad in concrete, except at the very lip. It was known and accepted, that surging waters over-topping the spillway would rapidly erode the earthen dam below that lip. In bureaucratese, the safety rules conceded that the spillway would fail if used: "The guidelines specify that during a rare flood event, it is acceptable for the emergency spillway to sustain significant damage."
7 Wild Rivers Under Attack by Hydropower Dams https://t.co/8vEGG2KFVp @americanrivers @riverkeeper— EcoWatch (@EcoWatch)1476306613.0
In 2005, Oroville came up for safety review by the Federal government. The Sierra Club, which I then headed, joined Friends of the River in urging that the emergency spillway be clad in concrete. The groups argued, using common sense, that "in the event of extreme rain and flooding, fast-rising water would overwhelm the main concrete spillway, then flow down the emergency spillway and that could cause heavy erosion that would create flooding for communities downstream, but also could cause a failure, known as 'loss of crest control.'"
The very water agencies whose constituents—farmers, businesses and families—depended on reliable delivery of water from Oroville, lobbied strongly against having to provide the "tens of millions" of dollars that strengthening the spillway would have required. They pinched pennies even though they knew that the dam was highly vulnerable. (On Christmas, 1964, while the dam was under construction, it had been almost over-topped by a series of heavy rainfalls—the Feather River had given fair warning of its capriciousness and power).
Regulators, imbued with the George W. Bush administration's hostility to a federal role in public safety, were not impressed. (Remember Katrina. The fuse on Oroville was just longer). They rejected the environmental petition. The "emergency" spillway remained unsheathed, a soft-underbelly at the Earth-filled core of the heart of the nation's tallest dam.
Now the Feather has shown its strength again. The scariest thing is that once the main spillway failed the emergency spillway began eating out the dam while it was carrying less than 5 percent of its 350,000 cubic feet per second design rating. This strongly suggests that many, perhaps most, of America's dams, are reliant on engineering assumptions which will not withstand the test of extreme weather unleashed by climate change.
What's next? Water managers will continue dumping as much water—only a few months ago, as precious as gold, still likely to be needed next summer—as they can, through the damaged but partially functional main spillway. Their goal is to drain Oroville sufficiently that the heavy rains expected in a few days and later in the season will not again reach the emergency spillway and risk spillway failure and a virtually instantaneous release of 10 billion gallons, the top 30 feet of stored water behind the dam.
Now that water levels are down, authorities have allowed normal life to resume in ghost towns like Oroville, Yuba City and Marysville, the very communities whose security was the public justification for building the dam in the first place. Water managers will still need to keep the dam far below its normal storage level until the water season ends, because they cannot use the main spillway at its full design capacity, until it is repaired. This means that next summer farmers and cities will fall far short of the water Oroville could have delivered if operated normally. A loss of a full third of the region's water supply is a frightening possibility if repairs of Oroville require shutting it down this summer.
18 Reasons Why We Must Invest in America's Infrastructure https://t.co/nObNJWYaDP @Greenpeace @greenpeaceusa— EcoWatch (@EcoWatch)1475186114.0
Will the lessons of this 60-year folly be learned? California might realize that it needs to invest in water delivery and flood control systems better prepared for the extreme weather and diminished snow pack to come. Or this disaster could be used to argue for ever more elaborate, fragile and vulnerable water diversion projects like the proposed tunnels in the Delta, larded up with fatter public subsidies to the very water users who refused to properly repair Oroville's spillways in 2005.
President Trump's campaign promises suggest that he should use Oroville to light a fire under Mitch McConnell and Paul Ryan, who breezily dismiss every warning from the nation's civil engineers as a call for "a trillion dollar stimulus project." The White House did cite the emergency as evidence of the need for a major investment in infrastructure, saying, "The situation is a textbook example of why we need to pursue a major infrastructure package in Congress."
But Trump's recent behavior suggests that he's not willing to do the heavy lifting of moving the Tea Party wing of the Republican party out of his way. It's going to take the rest of us—businesses and mayors, governors and community leaders, to fire up the Democrats in—and the president—to commit that by the end of the next eight years, America's dams—and the rest of its infrastructure—are fit for service in the 21st century.
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Since even moderate-intensity workouts offer a slew of benefits, walking is a good choice for people looking to stay healthy.
How to Rock Your Walk<p>Walking isn't just fun and healthy. It's accessible.</p><p>"Walking is cheap," says Dr. John Paul H. Rue, a sports medicine doctor at <a href="https://mdmercy.com/" target="_blank">Mercy Medical Center in Baltimore</a>. "You can do it anywhere at any time; [it] requires little to no special equipment and has many of the same cardio benefits as running or other more intense workouts."</p><p>Want to up your walking game? Try the tips below.</p>
Use Hand Weights<p>Cardio and strength training can go hand-in-hand when you add weights to your walk.</p><p>A <a href="https://journals.lww.com/acsm-msse/Fulltext/2019/03000/Associations_of_Resistance_Exercise_with.14.aspx" target="_blank">2019 study</a> found that weight training is good for your heart, and <a href="https://www.mayoclinicproceedings.org/article/S0025-6196(17)30167-2/abstract" target="_blank">research</a> shows it reduces the risk of developing a <a href="https://www.healthline.com/health/nutrition-metabolism-disorders" target="_blank">metabolic disorder</a> by 17 percent. People with metabolic disorders have a higher chance of being diagnosed with high cholesterol, high blood pressure, and diabetes.</p><p>Rue suggests not carrying weights for your entire walk.</p><p>"Hand weights can give you an added level of energy burning, but you have to be careful with these because carrying [them] over a long period of time or while walking could actually lead to some overuse injuries," he says.</p>
Make It a Circuit<p>As another option, consider doing a circuit. First, put a pair of dumbbells on your lawn or somewhere in your home. Walk around the block once, then stop and do some bicep curls and tricep lifts before walking around the block again.</p><p>Rue recommends <a href="https://www.healthline.com/health/exercise-fitness/running-with-weights" target="_blank">avoiding ankle weights</a> during cardio workouts, as they force you to use your quadriceps rather than hamstrings. They can also cause muscle imbalance, according to the <a href="https://www.health.harvard.edu/staying-healthy/wearable-weights-how-they-can-help-or-hurt" target="_blank">Harvard Health Letter</a>.</p>
Find a Fitness Trail<p>Strength training isn't limited to weights. You can get stronger by <a href="https://www.healthline.com/health/bodyweight-workout" target="_blank">simply using your body</a>.</p><p>Often found at parks, fitness trails are obstacle courses with equipment for pullups, pushups, rowing, and stretches to build upper and lower body strength.</p><p>Try searching "fitness trails near me" online, checking out your local parks and recreation website, or calling the municipal office to <a href="https://calisthenics-parks.com/" target="_blank">find one</a>.</p>
Recruit a Friend<p>People who workout together stay healthy together.</p><p><a href="https://bmcgeriatr.biomedcentral.com/articles/10.1186/s12877-017-0584-3" target="_blank">One study</a> showed that older adults who exercised with a group improved or maintained their functional health and enjoyed their lives more.</p><p>Enlist the help of a walking buddy with a regimen you aspire to have. If you don't know anyone in your area, apps like <a href="https://www.strava.com/" target="_blank">Strava</a> have social networking features so you can get support from fellow exercisers.</p>
Try Meditation<p>According to the <a href="https://www.nccih.nih.gov/research/statistics/nhis/2017" target="_blank">2017 National Health Interview Survey</a>, published by the National Institutes of Health, meditation is on the rise, and for good reason.</p><p>Researchers <a href="https://pubmed.ncbi.nlm.nih.gov/29616846/" target="_blank">found</a> that mind-body relaxation practices can regulate inflammation, <a href="https://www.healthline.com/health/biological-rhythms" target="_blank">circadian rhythms</a>, and <a href="https://www.healthline.com/health/glucose" target="_blank">glucose</a> metabolism, as well as lower <a href="https://www.healthline.com/health/high-blood-pressure-hypertension" target="_blank">blood pressure</a>.</p><p>"Any form of exercise can be turned into a meditation of some type, either by the surroundings you are walking in, like a park or trail, or by blocking out the outside world with music on your headphones," Rue says.</p><p>You can also play a podcast or download an app like <a href="https://www.headspace.com/headspace-meditation-app" target="_blank">Headspace</a> that has a library of guided meditations to practice while you walk.</p>
Do Fartlek Walks<p>Typically used in running, fartlek intervals alternate periods of increased and decreased speed. These are <a href="https://www.healthline.com/nutrition/benefits-of-hiit" target="_blank">high-intensity interval training (HIIT)</a> workouts, which allow exercisers to accomplish more in less time.</p><p><a href="https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0154075" target="_blank">One study</a> showed that 10-minute interval training improved <a href="https://www.healthline.com/health/metabolic-syndrome" target="_blank">cardiometabolic</a> health, or lowered the risk of heart disease, stroke, and diabetes, just as well as working out at a continuous pace for 50 minutes.</p><p><a href="https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0111489" target="_blank">Research</a> also shows that HIIT workouts increase muscle <a href="https://www.healthline.com/health/fast-twitch-muscles" target="_blank">oxidative</a> capacity, or the ability to use oxygen. To do a fartlek walk, try walking at an increased pace for 3 minutes, slow down for 2 minutes, and repeat.</p>
Gradually Increase Pace<p>A faster walking pace is associated with a lower risk of <a href="https://www.healthline.com/health/copd" target="_blank">chronic obstructive pulmonary disease (COPD)</a> and respiratory diseases, according to a <a href="https://pubmed.ncbi.nlm.nih.gov/30303933/" target="_blank">2019 study</a>.</p><p>Still, it's best not to go from a stroll to an Olympic-worthy power walk in a day. Instead, increase your pace gradually to prevent injury.</p><p>"Start by walking at a brisk pace for about 10 minutes per day, 3 to 5 days per week," Rue says. "Once you've done this for a few weeks, increase your time by 5 to 10 minutes per day until you get to 30 minutes."</p>
Add Stairs<p>You've likely heard that taking the stairs instead of an elevator is a way to add more movement into your daily routine. It's also a way to step up your walking. Stair climbing has been shown to <a href="https://www.sciencedirect.com/science/article/pii/S2211335519301123?via%3Dihub" target="_blank">decrease the risk of mortality</a> and can easily add a bit more challenge to your walk.</p><p>If you don't have stairs in your home, you can often find them outside a local municipal building, train station, or at a high school stadium.</p>
Is Your Walk a True Cardio Workout?<p>Not all walks are equal. A walk that's too leisurely may not provide enough burn to qualify as cardio. To see if you're getting a good workout, try to <a href="https://www.healthline.com/health/how-to-check-heart-rate" target="_blank">measure your heart rate</a> using a monitor.</p><p>"A target goal for a good walking workout heart rate is about 50 to 70 percent of your maximum heart rate," Rue says, adding that maximum heart rate is <a href="https://www.healthline.com/health/fitness-exercise/fat-burning-heart-rate" target="_blank">typically calculated</a> by 220 beats per minute minus your age.</p><p>You can also monitor how easily you can carry on a conversation while you walk to gauge your heart rate.</p><p>"If you can walk and carry on a normal conversation, that's probably a lower intensity walk," says Rue. "If you are slightly breathless but can still have a conversation, that's probably a moderate workout. If you are out of breath and can't talk normally, that's a vigorous workout."</p>
Takeaway<p>By shaking up your routine, you can add excitement to your workout and reap even more rewards than a basic walk provides. Increasing the pace and intensity of a workout will make it more effective.</p><p>Simply pick your favorite variation to add some spice to your next walk.</p>
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