Water resources

Three-foot high wooden walls enclose a small plot of soil and plants.

When the Unmentionable becomes Unavoidable

by Joachim SchneiderA cesspool is nothing more than a hole in the ground that receives wastewater from all parts of the household. In the case of many cesspools, this wastewater leaches into the surrounding groundwater and surface water, causing environmental ...
Green Infrastructure Practices for Hawaii

Green Infrastructure Recommended Practices for Streamside Homes

Green Infrastructure for Stormwater Management Home The Streamside Guide: Recommendations for Hawaiʻi Owners of land along waterways have the important responsibility to maintain areas of river and stream frontage on their properties. This guidance was created to encourage the application ...
Green Infrastructure Practices for Hawaii

Green Infrastructure-Streamside Recommendations

Green Infrastructure for Stormwater Management Home ...
Green Infrastructure Practices for Hawaii

Green Infrastructure-Stormwater + Flooding in the Coastal Zone

Green Infrastructure for Stormwater Management Home Water has sculpted the Hawaiian islands into the beautiful and dramatic archipelago we see today. For millenia, water has fallen from the sky and followed the force of gravity from mountains to sea. This ...
Green Infrastructure Practices for Hawaii

Green Infrastructure Practices for Hawaii

Green Infrastructure for Stormwater Management Home PRACTICE SUMMARY Permeable surfaces reduce runoff volumes and pollutant loads by allowing stormwater to infiltrate into the ground and through pavement, rather than flowing across it. These surfaces are particularly cost effective in flood-prone ...
flying drone

Wai, from mauka to makai

by Michael Mathioudakis It is a peaceful Saturday morning on windward O‘ahu as my co-pilot Daniel and I wait for the sun to peak over the horizon. We are FAA-licensed pilots gearing up to fly our octocopter, an aircraft equipped ...
A water hazard sign sits near a beach

Tracking groundwater nutrients using novel tracers to inform coastal watershed management in South Kohala, Hawaiʻi

 Research Projects 2020-2022 PRINCIPAL INVESTIGATOR: Henrietta Dulai Co-INVESTIGATORS: Kim Falinksi Graduate Fellow: Casey McKenzie We propose to provide land use managers in the South Kohala Coastal Partnership information that identifies the path of the groundwater that emerges at the coast, and estimates ...
A split image with the left showing a researcher adding dye to the top of a cesspool, and the right showing a natural rock-enclosed pool dyed green.

Identifying hot spots of sewage pollution in Hilo, Hawaiʻi

 Research Projects 2020-2022 PRINCIPAL INVESTIGATOR: Tracy Wiegner Co-INVESTIGATORS: Steven Colbert, Craig Nelson Graduate Fellow: Shayla Waiki, Joseph Nakoa With the majority of the world’s population living within coastal areas, sewage pollution is a growing global problem. In rural areas, like much of ...
On a rocky shoreline, one student crouches next to a bucket while another stands ready to write on a clipboard

Differentiating treated and untreated wastewater contamination in a tropical coastal community using microbial community genomics

 Research Projects 2020-2022 PRINCIPAL INVESTIGATOR: Craig Nelson Co-INVESTIGATORS: Tracy Wiegner Graduate Fellow: Nicolas Vanderzyl Sewage contamination of coastal waters is a global phenomenon and is an important public health concern. In tropical areas where coral reefs thrive in relatively pristine waters, even trace ...
Map view of coastline with super-composed thermal data showing locations of groundwater entry of ocean

Collaborative Study of Groundwater Transport Paths and Discharge Loads of Wastewaters and Other Land-Uses that Impact the Ewa Coastal Zones of West Oʻahu

 Research Projects 2020-2022 PRINCIPAL INVESTIGATOR: Craig Glenn Co-INVESTIGATORS: Aly El-Kadi, Celia Smith, Marek Kirs, Niels Grobbe, Robert Whittier Graduate Fellows: John Cameron, Matthew Duff The risk that sewage effluent released to the environment poses to human health and the environment is well ...