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Layer displays geological hazard/ soil stability ratings for sections within the RDOS per G.G Runka's Soil Stability - South Okanagan. |
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Layer displays geological hazard/ soil stability ratings for sections within the RDOS per G.G Runka's Soil Stability - South Okanagan. |
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Soil Stability - South Okanagan, G.G Runka |
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5000 |
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[] |
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Excerpt from Area "E" OCP:</SPAN></P><P STYLE="margin:1 1 1 40;"><SPAN>Detailed geo-hazard mapping, with soil stability ratings </SPAN><SPAN>. . .</SPAN><SPAN> in </SPAN><SPAN STYLE="font-style:italic;">Soil Stability Rating - South Okanagan (1971). </SPAN><SPAN>The mapping covers the majority of lands west of the KVR and up to Okanagan Park and covers the areas where there are a number of steeps slopes and silt bluffs. </SPAN><SPAN>The Mapping </SPAN><SPAN>indicates three ratings: high, moderate, and low. These ratings are summarized below. </SPAN></P><P STYLE="margin:1 1 1 40;"><SPAN STYLE="font-weight:bold;">High Rating: </SPAN><SPAN>(1) over-steepened slopes of silt and fine sand and immediately adjacent to flat lands that are likely to be affected should a slide occur; (2) silt and sand soils that have seepage from higher elevations which weakens cohesiveness and slides occur; (3) steeply sloping silts and fine sands are underlain by bedrock which planes dip downward; (4) areas where tunneling of the silts by water causes sinkholes; (5) undercutting by a stream resulting in over-steepened slopes; (6) areas where there is a hazard of receiving materials through sliding or slumping from above. </SPAN></P><P STYLE="margin:1 1 1 40;"><SPAN>Much of the High category is not particularly dangerous if left in the natural state or with as much vegetation cover maintained as possible. Many slides have occurred in this category to date. Intensive site-specific engineering investigation should be prerequisite to any form of development. </SPAN></P><P STYLE="margin:1 1 1 40;"><SPAN STYLE="font-weight:bold;">Moderate Rating: </SPAN><SPAN>(1) over steepened slopes of loose gravel, occasionally deep sands over silt; (2) rolling moderately sloping silts and fine sands adjacent to high hazard areas; (3) moderately sloping sands and silts subject to seepage from higher elevations; (4) danger of rock slide on talus slopes below rock bluffs. </SPAN></P><P STYLE="margin:1 1 1 40;"><SPAN>Few slides have occurred in Moderate areas, but high density development, with leveling, vegetation disturbance or slides on adjacent to High areas could cause problems. Engineering investigations are necessary for development. </SPAN></P><P STYLE="margin:1 1 1 40;"><SPAN STYLE="font-weight:bold;">Low Rating</SPAN><SPAN>: (1) flat topography not immediately adjacent to scarp; (2) course sand and gravel on moderate slopes; (3) bedrock or shallow soils over bedrock; (4) a compact heterogeneous mixture of soil material on moderate to sleep stopes. </SPAN></P><P STYLE="margin:1 1 1 40;"><SPAN>No soil stability problems that would affect development are anticipated. </SPAN></P><P><SPAN /></P></DIV></DIV></DIV> |
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Geological Hazard Zones |
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["Geological Hazard","Zones","Area E","OCP","hazard zones","soil stability"] |
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en-US |
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150000000 |
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