Breaking Waves

The following publication is available as a free download from Oregon Sea Grant.

The print version may be purchased from Oregon Sea Grant’s e-commerce store.

Planning for Resilience in Oregon’s Coastal Drinking Water Systems

On Oregon’s rugged coast, large-scale infrastructure for public utilities is virtually nonexistent, meaning that drinking water must be obtained through small systems, domestic wells, or springs. While a portion of Oregon’s coastal population utilizes a domestic or private source, the vast majority of residents rely on small public systems for their drinking water. Unfortunately, risks associated with small drinking-water systems are not widely documented nor well understood.

Planning for Resilience in Oregon’s Coastal Drinking Water Systems is the result of case studies of 13 drinking-water sytems in coastal Oregon. It examines risks to these systems including infrastructure issues, contamination, climate change, earthquakes, and tsunamis, and explores actions to increase resilience, such as planning, backup supply, source water protection, infrastructure improvements, and communication. The publication will be of value to coastal water system managers, city planners, and coastal residents interested in water supply issues.

If you’re planning to be on the Oregon Coast this week, grab your camera and help document the latest “king” tide.

King tides are natural events, caused by predictable astronomical factors that generate tides higher than most high tides. By understanding which areas are most affected by king tides, scientists, emergency planners and local officials can get a better idea which places might also be susceptible to high water generated by increasing wave heights, winter storms and a rising sea level.

Since 2011, the Oregon Department of Land Conservation and Development has invited photographers to help visually document how high the water reaches during king tides  -such as the ones forecast daily for the Oregon coast through this Thursday, Nov. 15. Oregon joins Australia, British Columbia, Washington and the San Francisco Bay area in the documentary effort.

To learn more about the King Tide Photo Project – including where, when and how to photograph the tides,  what your photos should show and how to submit them to the project’s photo gallery – visit the Oregon King Tide Photo Project website.

Good king tide photos will show water levels adjacent to a fixed feature like a piling, seawall or bridge abutment. Including such features allow observers to track how the actual water levels vary over time. f Good photos also must include information about the location, the date and time the photo was taken and which direction the photographer was facing. Two photos taken from the same spot, one during the king tide and the other at a typical high tide, are also very helpful in highlighting these water events.

If you’d like to take part, but miss this month’s event, additional king tides are predicted for December 12-14th, 2012 and January 10-12th, 2013.

Learn more:

• Photographs from the King Tides project, on Flickr

A pair of workshops on sea-level hazards are coming up Oct. 24 and 29 on Oregon’s south and north coast to help local emergency managers, planners and the interested public learn more about sea-level risks and what can be done about them.

Sea-level rise, storm surges and tsunamis will all be covered in the two workshops, organized by Oregon Sea Grant and the Oregon Coastal Management program. The purposes is to explore how learning more about the natural hazards posed by sea levels might affect local communities and their decisions: What science tells us, how that information can be used, how communities might respond and what  tools and resources they need.

The first workshop takes place from 1-4 pm Oct. 24 at the Red Lion Hotel, 1313 N. Bayshore Drive, Coos Bay. The second will be held at the same time Oct. 29, at Tillamook Bay Community College rooms 2140215, 4301 Third St., Tillamook.

Both meetings will include presentations on:

• The science behind global and level sea level rise (Phil Mote, Oregon Climate Change Research Institute)
• Ocean, atmospheric and tectonic influences on sea levels (Jonathan Allan, Oregon Department of Geology and Mineral Industries
• The effects of changing sea levels on estuaries and wetlands (speaker TBD).

After a question-and-answer session on the science of sea level hazards, a panel of local elected officials, planners, public works and emergency managers will informally discuss how this information can be used in their day-to-day work, what community resources are at risks and what decisions they are making that could be affected by the information.

Both meetings are free and open to the public. For more information, contact either of the workshop coordinators: Oregon Sea Grant’s coastal hazards specialist, Patrick Corcoran, or Jeff Weber, Oregon Coastal Zone Management Program.

“Be a Force of Nature” is the theme of the first-ever National Severe Weather Preparedness Week, starting this Sunday (Earth Day) and continuing through April 28.

The campaign is a joint effort by the National Oceanic and Atmospheric Administration (NOAA) and the Federal Emergency Management Agency (FEMA).

Daily themes will  target public awareness about severe weather hazards and encourage people to get prepared:

• Monday: Know Your Risk
• Tuesday: Make a Plan
• Wednesday: Build a Kit
• Thursday: Get a NOAA Weather Radio
• Friday: Be an example for others to follow

Full details – including downloadable posters, media PSAs and emergency preparedness kit checklists – can be found on NOAA’s Weather-Ready Nation Website.

While the effort focuses on hurricanes, tornadoes and other catastrophic storms less common in the Pacific Northwest, Oregonians can still learn from the campaign, according to Patrick Corcoran, Oregon Sea Grant’s coastal hazards specialist.

In this region, coastal storms generally occur from November to March – but recent trends have shown earlier dates for the first storm and later dates for the last storm of the season. And offshore buoys have measured increasingly higher waves during winter storms over the past 30 years. A result has been more impacts by storms on people and infrastructure, from homes to highways.

“Some homes on cliff-backed beaches have found themselves precariously closer to the edge,” said Corcoran. “A few have fallen into the sea. Other properties in lower areas with dune-backed beaches are experiencing larger storm waves, overtopping of shore protection structures, and an overall increase in erosion.”

Corcoran pointed out that although the Northwest is generally spared from tornadoes and hurricane-strength storms, they can happen – and the region is also prone to seismic disasters including earthquakes and tsunamis.

“The steps NOAA recommends to prepare for catastrophic storms make good sense for the types of disasters we in the Northwest face, too,” he said.

Learn more:

• Coastal Natural Hazards – Pat Corcoran’s Website
• The Three Things You Need to Know – Earthquake and Tsunami preparedness from Oregon Sea Grant
  • Video
  • Downloadable brochure