The inner harbor of Ashtabula was selected for a wetland creation project that sought to balance the need for wetland establishment, wetland diversity, and amount of dredged sediment utilized.
The inner harbor of Ashtabula was selected for a wetland creation project that sought to balance the need for wetland establishment, wetland diversity, and amount of dredged sediment utilized.
Due to the possibility of reducing costs, the design incorporates a more open system that embraces the principles of passive sediment management. While initially designed to be a completely enclosed system, the USACE, with our encouragement, settled on a design that is open on the southern end. The newly-constructed containment structure, consisting of a submerged sill on the west, sits below water level, while the northern and western sides will be protected by the existing breakwater.
This partially-open design facilitates the occasional, ecologically-necessary disturbance that will facilitate wetland complexity while also allowing for an important hydrological connection to the nearshore.
In Ashtabula, HPF initially drafted an wetland design that called for a semi-open cell system which promoted wetland diversity and occasional disturbance.
This partially-open design facilitates the occasional, ecologically-necessary disturbance that will facilitate wetland complexity while also allowing for an important hydrological connection to the nearshore.
In Ashtabula, HPF initially drafted an wetland design that called for a semi-open cell system which promoted wetland diversity and occasional disturbance.
Through the year process, Army Corps of Engineers (ACE) refined their design to include a wetland cell that was open to the more protected, shoreside, and an emphasis on placement which would promote topographic differences necessary for wetland diversity.
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