
19:42 - 20:33
"those were designed to the same capacity to which the HESCO barriers are built, so 63,500. Also, as a function of creating the maps, we also overlaid, we took a no HESCO model, and so what would be inundated without the HESCOs. We also looked at several different breach points and tried to identify where the worst or most impactful breach locations would be and overlaid those things so that we made sure that we encompassed any area that could be impacted."
“those were designed to the same capacity to which the HESCO barriers are built, so 63,500. Also, as a function of creating the maps, we also overlaid, we took a no HESCO model, and so what would be inundated without the HESCOs. We also looked at several different breach points and tried to identify where the worst or most impactful breach locations would be and overlaid those things so that we made sure that we encompassed any area that could be impacted.”
So while we're mapping and working in models, we use the cubic feet per second. And so those were designed to the same capacity to which the HESCO barriers are built, so 63,500. Also, as a function of creating the maps, we also overlaid, we took a no HESCO model, and so what would be inundated without the HESCOs. We also looked at several different breach points and tried to identify where the worst or most impactful breach locations would be and overlaid those things so that we made sure that we encompassed any area that could be impacted. Again, we broadened our criteria for inclusion in the evacuation advisory based on access and transportation and how folks or first responders may be able to engage.
The City and Borough of Juneau has nearly doubled its evacuation advisory area ahead of the annual Mendenhall glacier outburst flood, covering just over 1,900 residences this year versus roughly 1,000 last year. Officials say HESCO barriers are complete but warn the system is fragile and urge all residents in the zone to evacuate.
