Stormwater — Hawaii First Water

Hawaii’s record 2018 rains may foretell wetter times ahead

September 23, 2018

September: With warmer atmospheres and oceans, monster deluges may become ever more common there and elsewhere.

Matthew Cappucci: Science News for Students

Residents of Hawaii have survived several major deluges this year. And scientists say a warming climate may make such record-breakers ever more common.

One year ago, Hurricane Harvey shattered the U.S. record for most rain to come down in a single storm. Last month, another hurricane dropped record rains, this time on Hawaii. Named Lane, its measured tally would seem to be the highest ever for this island state, and second nationally only to what Harvey unleashed on Texas.

The previous record for a tropical cyclone in Hawaii was measured at Kanalohuluhulu Ranger Station. That was during Hurricane Hiki in 1950.

The National Weather Service in Honolulu has now confirmed that Lane dropped 132.13 centimeters (52.02 inches) of rain between August 22 and 26. That total comes from an official government rain gauge on the Big Island (named Hawaii). “The previous record was 132.08 centimeters (52.00 inches),” the NWS reported in an August 27 statement. This, it concluded, shows that “Hurricane Lane has broken the Hawaii tropical cyclone storm-total rainfall record.”

However, NWS pointed out, this record will stand only “pending verification.” Confirming the feat requires a special probe. A meteorologist at the NWS forecast office said that could take months.

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Officials to discuss elevated risk cesspools pose…

July 9, 2018

West Hawaii Today; Max Dible, 25 June 2018: Every day cesspools throughout Hawaii send an excess of harmful nutrients pouring into nearshore ocean water and threatening to infiltrate the freshwater drinking supply. Hawaii island is home to tens of thousands of them representing nearly half of the known cesspools used throughout the state. With the deadline of 2050 to shut down every one of them, the State Department of Health has scheduled informational community meetings in both Kailua Kona and Hilo…

…When cesspool seepage intermingles with ground water, it can find its way into aquifer drawn on by the county. This is generally less of a concern at the deep well sites, which can range between 1,000 and 2,000 feet in depth and supply Hawaii island with most of its drinking water…

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17-19 July 2018 Construction Stormwater Quality Workshops

July 1, 2018

Enhance your ability to efficiently serve your clients, in a
manner compliant with the new Hawaii Water Quality Rules. Learn
the latest “how to” and best practices for design, plans
review, construction, and post construction stormwater
quality, one year in to implementing the new Water Quality
Rules. The workshop is expected to include staff leaders
from within the City and the design and construction
industry working together to protect our waters.

This is the link to the registration…

New State of Hawaii Brown Water Beach Website

December 5, 2017

December: (Kobayashi Comment: This new State of Hawaii website is an excellent example of the fusion of GIS mapping capabilities with water data. I strongly support such efforts and commend the DOH and Clean Water Branch for taking this first step)

HONOLULU — The Hawaii State Department of Health (DOH) Clean Water Branch has developed a newly upgraded website that gives the public access to up-to-date information — integrated with aerial photos from Google maps — to check on the status of the water quality of beaches that may have a surge in bacteria levels or are being impacted by sewage spills. This website is part of a revised statewide beach monitoring and notification system.

The new features and functions of the website, developed in part from a grant from the U.S. Environmental Protection Agency (EPA), were based on feedback from those within the health department as well as external stakeholders. The website is part of an integrated notification system that includes warning signs posted at selected beaches throughout the state.

This is the link to the new website…

AWWA/HWEA Pacific Water Conference

November 5, 2017

(November ) The American Water Works Association Hawai‘i Section and the Hawai‘i Water Environment Association are proud to announce the fifth annual joint conference now known as the Pacific Water Conference at the Hawai‘i Convention Center from February 6 – 8, 2018. Our joint conference committee is hard at work to bring you an exciting, fun, and educational conference.

The Pre-Conference Workshop kicks things off on Tuesday, February 6. The Conference officially opens on Wednesday, February 7 and lasts through Thursday, February 8. Join us at the Convention Center Kamehameha Exhibit Hall I to cheer on this year’s operator competitions featuring HWEA’s Operations Challenge and AWWA’s Pipe Tapping and Top Ops events. Remember to check out the exhibitors showcasing the newest and latest products in the industry. With five technical session tracks to choose from, there’s sure to be one that piques your interest. The conference golf tournament will be held on Friday, February 9 at the Kapolei Golf Course, and the community service event will take place on Saturday, February 10.

Here is the link to register…

Hawaii and the Ghost of Climate Change Future

June 3, 2017

June 2017; The Atlantic Magazine, Adrienne Lafrance

The water is everywhere.

For the second time in a month, Hawaii’s coastlines have been swamped by epic tides. The phenomenon, known as a king tide, is actually a convergence of a few different factors: high lunar tides, rising sea levels associated with last year’s strong El Niño and climate change, swirling pockets of ocean eddies, and a robust south swell—that is, big waves rolling onto south-facing shores.

King tides happen routinely in the Hawaiian Islands—a few times a year, usually—but this year’s batch have been particularly extreme. Data from federal tide stations around Hawaii show that water levels have been up to six inches above predicted tidal heights since early last year. In April, levels peaked at more than nine inches above predicted tides and broke the record high for any water level around Hawaii since 1905. Scientists say the record is likely to be broken again in 2017.

Several Honolulu roadways have been submerged. Beaches have been washed out. Beachfront hotels have canceled shorefront entertainment and readied generators. Property owners living near the coasts were told to move electronics and other valuables up to the second floor of their houses and park their cars elsewhere. People photographed fish swimming down the streets. And all around the islands, small mountains of sand have been deposited in parking lots and other strange places—spots the waves should never reach.

For the people of Hawaii, alarm bells are ringing. King tides like this aren’t just a historic anomaly; they’re a sign of what’s to come. “Within a few decades this will be the new normal,” said Chip Fletcher, associate dean of the School of Ocean and Earth Science and Technology at the University of Hawaiʻi, in a university statement. “Hawaii should consider this a practice run, and reevaluate policies and development practices accordingly.”

“It’s a risk big enough to get the attention of officials who usually watch things like hurricanes and tsunamis,” said the local TV reporter Gina Mangieri, who reported for KHON that emergency-management officials had called for “all-hands-on-deck coordination” across state, county, and federal agencies to protect critical infrastructure and the public.

Scientists believe Hawaii could experience a sea-level increase of three feet by the year 2100, which is in line with global predictions of sea-level change and which would substantially reshape life on the Islands. That’s part of why scientists are enlisting volunteers to help photograph and describe incremental high tides across Hawaii.

“First-person experiences that are place-based and familiar reinforce that climate changes impacts are local in nature and not a distant phenomenon,” the university’s King Tides Project website says. More than 60 volunteers have submitted more than 900 photos so far.

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Bill to ban cesspools statewide awaits Governor’s signature

May 20, 2017

May 2017: HONOLULU (HawaiiNewsNow) –

A measure heading to the governor’s desk would ban Hawaii’s nearly 90,000 cesspools by the year 2050, a move that some say would slow progress in bolstering the affordable housing inventory.

The bill comes a year after Gov. David Ige banned newly-constructed cesspools in the state.

“Cesspools, on average, release 55 million gallons of untreated sewage a day into streams, oceans and nearby waterways,” said Marti Townsend, director of Sierra Club of Hawaii. “That’s an extreme amount of untreated raw sewage that people end up swimming in, fishing from and maybe even drinking.”

Health officials say untreated sewage can be linked to skin infections and illnesses like Leptospirosis and Hepatitis A.

“Public health and safety is on the line,” said state Rep. Chris Lee. “We want clean waters, we want clean beaches, and this is a step in that direction.”

The state is offering a $10,000 tax credit to homeowners who convert to septic tanks, aerobic systems, or sewer lines.

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City crews respond to another massive leak at Ko Olina resort

January 10, 2017

January 2017, KO OLINA, OAHU (HawaiiNewsNow) –

City crews on Tuesday responded to a massive sewage spill at the Ko Olina resort in West Oahu, the second such spill in the area in the last three months.

“We have a massive sewage spill where a force-main broke,” said environmental activist Carroll Cox. “We were told about 8:15 this morning, the city called out all of its vacuum trucks, sent out an alert for all of them to report to this facility.”

Cell phone video, taken about an hour before city crews shut down the pipeline, shows thousands of gallons of raw sewage draining onto an area near a nearby golf course.

City crews dispatched nearly a dozen vacuum trucks, tankers and cesspool trucks to clean up the spill. The trucks later dumped the sewage into sewer lines away from the break, allowing it to be sent to a nearby treatment plant.

The spill was contained by about 10:30 a.m., and the cause is still under investigation.

City Environmental Services Director Lori Kahikina said it’s still too early to provide an estimate on the size of the spill, but said it could be as large as the last one. The previous leak was caused by corrosion.

“As of now, we know it’s a very large spill, similar to the last one,” she said. Kahikina says none of the sewage made its way to the ocean.

In the meantime, environmentalists are questioning whether the existing sewer lines can handle all of the development and growth at Ko Olina, including plans for a Atlantis resort in the area.

“There’s been some big development happening there, so it really questions whether all this growth can be accommodated for,” said Jodi Malinowski, Oahu Group Coordinator for Sierra Club Hawaii. “We’re disappointed that there’s been another spill.”

The city plans says it plans to begin repairs today. Over the longer term, it wants talk to developers to see if even larger sewage lines are needed, though repairs of that magnitude could potentiall cost taxpayers millions of dollars.

Oahu’s Ala Wai Watershed Student Design Challenge

December 17, 2016

December: (Editor Kobayashi Note: In case you missed it, the UH announced this competition for students at the Conservation Congress to deal with the continuing problems of the strategic Ala Wai Canal In Honolulu. Here is the timetable for 2017, use the link to the challenge website and good luck!!)

The Ala Wai Watershed Student Design Challenge, was announced by the University of Hawai‘i at the U.S.-hosted 2016 IUCN World Conservation Congress. The Challenge looks to unlock student innovation and creativity to craft solutions that address critical urban watershed and island issues, specifically, restoring watershed ecologies and exploring culture’s contribution to sustainable development.

The University of Hawai’i seek ideas from the brightest minds of our youth and students to help advance the collective goals and action agenda of the Ala Wai Watershed Partnership (AWWP) (e.g., stream and ecosystem restoration, green stormwater infrastructure, water capture and reuse, sediment control, flood mitigation, contemporary urban ahupua’a, Ala Wai as a destination, education and engagement with community/youth, coalition of teams with local participation, etc.)

Here is a link to the challenge website…

TIMELINE
Sept 5th, 2016 – Design competition announced @ IUCN-WCC
Sept – Dec 2016 – Outreach to students
Jan 9th, 2017 – Design Challenge opens
Jan 9th-31st, 2017 – Registration period
March 17th, 2017 – Design entries close
May 2017 – Exhibition of design entries at various locations
Week of June 25th, 2017 – Winners announced at World Youth Congress 2017

UH researchers link quality of coastal groundwater with reef

December 17, 2016

December;

(Honolulu, HI) Land-use practices on tropical oceanic islands can have large impacts on reef ecosystems, even in the absence of rivers and streams. Land-based pollutants, such as fertilizers and chemicals in wastewater, infiltrate into the groundwaters beneath land and eventually exit into nearshore ecosystems as submarine groundwater discharge (SGD)—seeping into the coastal zone beneath the ocean’s surface. In a study published recently in PLOS ONE, University of Hawai‘i at Mānoa (UHM) scientists used a combination of field experiments and chemical analysis of water and algae to show that the quality of coastal groundwater plays a major role in determining the health of nearshore ecosystems in Hawai‘i.

Various sources of pollution, such as agriculture or sewage treatment facilities, have identifiable chemical signatures, particularly the isotopes of nitrogen in the nutrients they contain. This study assessed groundwater quality, coastal water quality, and reef health across six different bays on Maui with various potential sources of pollution. By comparing the nitrogen isotope signature of algae tissues and potential pollution, the research group traced nutrients in the algae back to their land-based sources.

This study is the first to show the extent of the impact of wastewater injection wells at Kahului Wastewater Reclamation Facility, Maui’s highest-volume sewage treatment plant, on Kahului Bay. In addition to relatively high nutrient levels in marine surface waters in Kahului Bay, shallow areas were almost entirely dominated by a thick fleshy mat of colonial zoanthids, a phenomenon not reported anywhere else in the state. A concurrent companion study to this work, led by James Bishop at the UHM Department of Geology and Geophysics, found that water collected from beach sands, which represents coastal groundwater, next to the Kahului Wastewater Reclamation Facility contained up to 75 percent treated wastewater—highlighting the impact of wastewater in this area.

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