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Littoral barriers along the Canadian Great Lakes that impede sediment transport along the coast; data is part of the Overall Assessment of the State of Nearshore Waters. |
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Littoral barriers along the Canadian Great Lakes that impede sediment transport along the coast; data is part of the Overall Assessment of the State of Nearshore Waters. |
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Environment and Climate Change Canada - Strategic Policy Branch - RDGO |
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5000 |
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<DIV STYLE="text-align:Left;font-size:12pt"><DIV><DIV><P><SPAN>This data was derived as part of the Overall Assessment of the State of Nearshore Waters. The supply, transport and deposition of sediment are natural processes that form and maintain coastal features like wetlands and beaches. Artificial shore perpendicular structures (littoral barriers) can disrupt natural movements of sediment and affect the integrity of ecosystems. Littoral barriers is assessed by counting the number of littoral barriers (>100 m in length) in a Regional Unit. </SPAN><SPAN>Barrier is represented by the line centroid, for mapping purposes.</SPAN></P><P><SPAN>Littoral barriers were digitized using best available imagery, at a scale of approximately 1:2,000.</SPAN><SPAN> Point represents centroid of littoral barrier, for mapping purposes.</SPAN></P><P><SPAN>A littoral barrier is a shore perpendicular structure that, for purposes of the Overall Assessment of the State of Nearshore Waters, is at least 100 meters in length. </SPAN><SPAN /><SPAN>In Regional Units where littoral drift is not a dominant coastal process, the measure not apply and is tagged as "N/A'.</SPAN><SPAN /></P><P><SPAN>Low Stress: 0 littoral barriers</SPAN><SPAN>; </SPAN><SPAN>Moderate Stress: 1 littoral barrier</SPAN><SPAN>; </SPAN><SPAN>High Stress: >1 littoral barrier</SPAN></P></DIV></DIV></DIV> |
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Great Lakes Nearshore Waters: Littoral Barriers |
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["Great Lakes","Lake Superior","Lake Huron","Lake Ontario","Lake Erie","Nearshore Framework","water quality","ecosystem health","cumulative stress","Coastal Processes","Littoral Barriers"] |
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en-CA |
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150000000 |
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