Tag Archives: Erosion

Strong winds are supersizing the ocean’s biggest waves

Photo source: © SAF — Coastal Care


Strong winds are driving the ocean’s biggest waves to dizzying new heights.

That’s the potentially ominous finding of new research that analyzed more than 30 years’ worth of global wind and wave measurements to see how they changed over time. The University of Melbourne researchers behind the work, published April 25 in the journal Science, say the supersized waves could compound the effects of rising sea levels, leading to more frequent flooding and accelerated coastal erosion…

Read Full Article; NBC News (04-30-2019)

El Niño and our beaches; By Gary Griggs

Photograph courtesy of: Gary Griggs (©-2016).


Our beaches come and go seasonally in response to changing wave conditions. The larger and more energetic winter waves stir up the beach sand and carry it offshore, eroding the shoreline back. Six months or so later, the smaller and less energetic spring and summer waves gradually move that sand back onshore, building the beach just in time for all the summer visitors…

Read Full Article, Santa Cruz Sentinel (04-27-2019)

Can 475 ‘sand cubes’ protect Capo Beach, CA from further erosion?

Coastal erosion, California. Photograph: © SAF — Coastal Care


An estimated 475 sand cubes — 3-by-3-foot white plastic bags filled with sand — were being stacked next to one another along the eroding Capo Beach, CA where strong waves, high tides and a rising sea level have battered the area for years.

It will take about 20 days to install the beach buffers in an attempt to save what’s left of the small stretch of Dana Point coast…

Read Full Article; OC Register (04-04-2019)

Blowing In The Wind? Spending Millions On Disappearing San Diego Beach Sand; KPBS (02-05-2016)
All up and down the San Diego coast, sand, particularly in North County, has disappeared from the beaches. A radio interview of Gary Griggs, Director, Institute of Marine Sciences, UC Santa Cruz, on KPBS News…

The only answer to rising seas is to retreat; By Orrin H. Pilkey & Keith C. Pilkey; The News & Observer (10-18-2017)
Except for the timing, there is no controversy among scientists regarding sea level rise. Defending the coast and holding the shoreline in place ultimately will be futile. With a three-foot or a six-foot sea level rise, we will retreat, probably beginning within the next 50 years…

California prepares policy for coastal ‘retreat’; E & E News (12-07-2018)
Oceanfront homes could be demolished along California’s coastline under a groundbreaking proposal to preserve the state’s made-for-movies beaches before they’re destroyed by rising seawater. The California Coastal Commission plans to release guidance early next year for dealing with sea-level rise in residential areas…

Del Mar takes another look at rising sea level and unpopular ‘planned retreat’, San Diego Union Tribune (05-20-2018)
The California Coastal Commission requires all coastal cities to have a sea-rise adaptation plan, and to include planned retreat as part of their strategy…

Coastal policy needs dose of reality; Op Ed by Orrin Pilkey; Star News Online (02-02-2017)

Let’s end war with ocean, Op-Ed by Orrin H. Pilkey (04-2017)
The immediate future most certainly holds more miles of sandbags, resulting in more narrowed and ugly beaches.But this trend can be halted and reversed. Now is the time to make peace with the ocean.The time is now to stop sandbagging, both physically with no more shore-hardening structures, and politically with no more exceptions to the intent of the rules, no more undermining existing legislation, and a return to enforcement…

Shore fix in Cane unlikely to last, experts say, BVI

Coastal development and erosion. Photograph: © SAF — Coastal Care


About a month ago, excavations began along the beach in the north end of Cane Garden Bay as part of a government project designed to protect a shoreline that slips further into the sea with each heavy swell.

But two United States experts told the Beacon that the method being used — stone-filled wire cages known as gabion baskets — probably won’t last long…

Read Full Article; The Beacon, British Virgin Island (03-12-2019)

Argentina: The Atlantic Coast loses two meters of beach per year

Atlantic coast, South America. Photograph: © SAF — Coastal Care


La Costa Atlántica pierde dos metros de playa por año
Sucede en los principales balnearios bonaerenses, a causa de la erosión, generada por la pérdida de dunas, las sudestadas y la intervención urbana, con paradores de cemento, avenidas costaneras, la forestación de los médanos y el robo de arena para construcciones…

Read Full Article; Tiempo Argentina (01-13-2019)

It happens in the main beaches of Buenos Aires, due to the erosion, generated by the loss of dunes, urban intervention, with walls of cement, coastal roads, the afforestation of the dunes and the theft of sand for constructions…
Read Google Translation; (01-13-2019)

“El Expolio De La Arena”; By Cristina Sáez, © La Vanguardia Magazine (08-08-2014)
In this original version, investigative journalist Cristina Sáez, writing for leading spanish newspaper La Vanguardia, exposes how extensive, detrimental, silenced yet utterly pervasive “The pillaging of beach sand” has become…

“Management Strategies for Coastal Erosion Processes; By Nelson Rangel-Buitrago (06-01-2018)

After a Long Boom, an Uncertain Future for Big Dam Projects

Grootdraai dam, South Africa. Photo source: ©© Jan Truter


The rise of wind and solar power, coupled with the increasing social, environmental and financial costs of hydropower projects, could spell the end of an era of big dams. But even anti-dam activists say it’s too early to declare the demise of large-scale hydro…

Read Full Article; Yale E360 (11-27-2018)

Unintended consequences of dams and reservoirs; Science Daily (11-13-2018)
An international team of drought scientists show that while many dams and reservoirs are built, or expanded, to alleviate droughts and water shortages, they can paradoxically contribute to making them worse…

Hydropower, innovations and avoiding international dam shame; Science Daily (11-05-2018)
The benefits of energy from dams no longer outweigh the social and environmental costs that damming up rivers brings about…

The Wrong Climate for Damming Rivers, A Video from Todd Southgate (05-26-2016)
Though large hydropower projects are often presented as a “clean and green” source of energy, nothing could be further from the truth…

Mega Dams Remain Controversial Source of Energy; IPS News (06-09-2016)

Undamming Rivers: A Chance For New Clean Energy Source; Yale E360 (08-07-2015)
Hydroelectric power is often touted as clean energy, but this claim is true only in the narrow sense of not causing air pollution. In many places, such as the U.S. East Coast, hydroelectric dams have damaged the ecological integrity of nearly every major river…

1000 Dams Down and Counting: Dam Removal Study Reveals River Resiliency; USGS (05-02-2015)

DamNation; a Documentary That’s Testing the Waters of Corporate Social Responsibility; Produced by Stoecker Ecological and Felt Soul Media” and presented by Patagonia.

Elwha, The Grand Experiment (11-12-2012)

On The Elwha, A New Life When The Dam Breaks
Nobody figured the largest dam removal project ever attempted in the U.S. was going to be easy, or fast.The nation’s largest and most ambitious dam removal will begin this month, when workers start demolishing two antique dams on Washington state’s Elwha River…

Dam projects on world’s largest rivers threaten ecosystems, rural livelihoods; Science Daily (01-08-2016)

12 Dams that Changed the World, Guardian UK (01-13-2015)

Large Dams Just Aren’t Worth the Cost, The New York Times (10-25-2014)

Small Dams On Chinese River Harm Environment More Than Expected, study finds, NSF (05-30-2013)

Dams – Cutting off our Beach Sand; By Gary Griggs (12-19-2014)