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    Oroville Dam Spillway Failure

    The right side of the spillway (left side of the image looking uphill) was at a lower elevation than the right side before the spillway was built. Thus the right side tends to consist of weaker, more weathered material because the left side was excavated closer to the bedrock. Thus water flowing...
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    Oroville Dam Spillway Failure

    I see no evidence of geologic structure, be it a fault or joints or anything else, that would connect the apparent lineations. Chances are that the viewer is making up in his head something that is not there. A number of comments above reflect a weak understanding of basic geology that I don't...
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    Oroville Watershed Weather Forecast, Lake Level and Inflow Calculations

    The latest European model run merges the cut off low hanging out NE of Hawaii with the cold low dropping out of the Gulf of Alaska. If the ECMWF model verifies, the storm will be much warmer and wetter than the cold system the GFS is predicting. The GFS run would bring heavy rains further south...
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    Oroville Watershed Weather Forecast, Lake Level and Inflow Calculations

    Much of the precipitation will come as snow after today's warm rains. The high elevations where the precipitation amounts are high will not be adding much water to the inflows after today because snow levels will drop. You can see that a large amount of snow has accumulated at high elevations in...
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    Oroville Watershed Weather Forecast, Lake Level and Inflow Calculations

    CIMSS Water Vapor imagery shows that the moisture feed for the storm developing offshore of central California. It extends from west of the big island of Hawaii to the California coast. Note that a warm front with an WNW to ESE orientation, appears to be developing from 130ºW to just offshore of...
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    Oroville Watershed Weather Forecast, Lake Level and Inflow Calculations

    Snow levels are forecast by the NWS to go as high as 7000 feet on Monday but fortunately, colder air will start moving in Monday night and it will continue cooling off through mid week. The whole pattern is shifting to jet stream flow dropping from northwest out of the Gulf of Alaska to...
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    Oroville Watershed Weather Forecast, Lake Level and Inflow Calculations

    First post here. Retired PhD geochemist / geologist who appreciates the informative technical discussion here. My professional experience is with nuclear waste disposal safety research and regulation. The weather forecast for Monday and Tuesday just got worse, as Mick noted in the other...
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