| snippet:
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Lake Ontario, Niagara River and St. Lawrence River shoreline, tagged as either natural or hardened, for purposes of assessing stress on nearshore waters. |
| summary:
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Lake Ontario, Niagara River and St. Lawrence River shoreline, tagged as either natural or hardened, for purposes of assessing stress on nearshore waters. |
| extent:
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[[-79.8970061096792,42.8540915977854],[-76.8545009303911,44.0689516603517]] |
| accessInformation:
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Environment and Climate Change Canada - Strategic Policy Branch - RDGO |
| thumbnail:
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thumbnail/thumbnail.png |
| maxScale:
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1.7976931348623157E308 |
| typeKeywords:
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["ArcGIS","ArcGIS Server","Data","Feature Access","Feature Service","providerSDS","Service"] |
| description:
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<div style='text-align:Left;'><div><div><p><span>This data was derived as part of the Overall Assessment of the State of Nearshore Waters. </span><span>Across the Great Lakes, much of the nearshore, waters edge or back of beach has been altered with engineered structures or artificial material. Hardened shorelines reduce coastal resiliency by altering sediment dynamics, accelerating erosion, increasing water turbidity & destroying local vegetation. Shoreline hardening is assessed by determining the percent of the total length of shoreline in a Regional Unit that is hardened.</span></p><p><span>The shoreline of Lake</span><span>Ontario and the St. Lawrence River</span><span>has been delineated as either "natural" or "hardened" based on the following definitions:</span><span /></p><ul><li><p><span style='font-weight:bold;'>Natural Shoreline</span><span>: no engineered or aritificial structures in the nearshore, at the waters edge, toe of bluff, backshore or back of the beach; rising and falling water levels result in natural changes in the shoreline position; wildlife usage and vegetation migration upslope and downslope can occur unimpeded; natural vegetation communities, consistent with local conditions, are generally present along the shore.</span><span /></p></li><li><p><span style='font-weight:bold;'>Hardened Shoreline: </span><span>the nearshore, waters edge, toe of bluff, backshore or back of beach has been altered with engineered structures or artificial material (e.g. offshore breakwaters, lakefill, groynes, seawalls, revetments, dumped concrete rubble, artificial channels, dikes, etc.); natural shoreline processes are altered, and native vegetation communities are generally absent.</span></p></li></ul><p><span>Shoreline exposure is also attributed:</span></p><ul><li><p><span style='font-weight:bold;'>Lake:</span><span>shoreline directly exposed to lake wave energy</span></p></li><li><p><span style='font-weight:bold;'>Sheltered</span><span>: shorelines with embayments, tributaries or the inside of jettied structures where there is protection from wave energy and currents</span></p></li><li><p><span style='font-weight:bold;'>Connecting Channel: </span><span>shorelines in the Great Lakes connecting channels</span></p></li></ul><p><span>Best available, most recent aerial imagery was used for the delineation, at a scale of approximately 1:2,000. </span></p><div><div><p><span>Low Stress: <25% shoreline hardening</span><span>Moderate Stress: 25-50% shoreline hardening</span><span>High Stress: >50% shoreline hardening</span></p></div></div><p><span /></p></div></div></div> |
| licenseInfo:
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| catalogPath:
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| title:
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LO_CoastalProcesses_Shoreline_Hardening |
| type:
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Feature Service |
| url:
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| tags:
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["Lake Ontario","Niagara River","St. Lawrence River","Nearshore Framework","cumulative stress","Coastal Processes","Shoreline Hardening"] |
| culture:
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en-CA |
| portalUrl:
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|
| name:
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LO_CoastalProcesses_Shoreline_Hardening |
| guid:
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54CB12C2-4C08-4699-AB33-66C64B4D41E0 |
| minScale:
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0 |
| spatialReference:
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NAD_1983_UTM_Zone_17N |