For all island, shoreline and coastal communities there are two inevitable forces at play.
Source water from the catchment areas flowing downstream and the certainty of sea level rise at the shoreline due to climate change. And where the two meet is where the critical decisions are necessary for shoreline restoration, nature based detention systems, and sound property owner education and engagement.

In the Fourth Seminar this Monday “Shelter From The Storm” Kevin Carter looked at the impact of rising sea level on the City of Miami and the South Florida management district – and also the change in direction of how to address the fact that not everything can be saved?

Over 150 flooding events are projected in this area due to the rise in sea level.
See

“Global and Local Sea Level Rise Trends Sea level rise exposure mapping in the 2017 Hawai`i Sea Level Rise Report and Hawai`i Sea Level Rise Viewer (Viewer) is based on an upper-end projection in the 2013 IPCC 5th Assessment Report of 3.2 feet
of global mean sea level rise by 2100. As expected, the science on sea level rise observations and forecasts has continued to advance. Since completion of the 2017 Report, peer-reviewed scientific literature as well as government and multinational reports increasingly point to 3 to 4 feet of sea level rise by 2100 as a mid-range, rather than high-end, scenario for Hawai`i. These increasing projections of sea level rise are based on greenhouse gas emissions, which continue to increase, and observations of
accelerating ice mass loss to the oceans, particularly from Greenland and West Antarctica.

The projections are often provided to 2100, though sea level rise will likely continue for centuries.”

see: https://en-us.topographic-map.com/map-pzw4gt/Hilo-Bay/?center=19.72685%2C-1…

Within a very short space of time Hilo Bay will advance inland just as the Atlantic currently does in Miami – with the same sustained and frequent flooding – which is the fourth element of any water management plan.
The Seminar can be viewed at https://vimeo.com/showcase/12440659?fl=so&fe=fs

Next Monday, November 2, the Seminar offers an opportunity to see the award winning City of Sheffield “Grey To Green” program – initiated after the catastrophic floods of 2007, the massive replumbing of the City Center stormwater and run off exposures, coupled with upstream retention bioswales and accelerated agricultural change of practices has paid off in dividends! No loss of life, economic benefits, community parkways, and overwhelming community support.

November 2: Grey To Green: Managing Seven Hills and Five Rivers
All begin at 9 AM HST – 10 AM HST (3 PM EST) via Zoom
Every Monday in October and November, December 14 and 21
Please login here: https://us02web.zoom.us/j/82139391920