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During the Pliocene to middle Pleistocene, pluvial lakes in the western Great Basin repeatedly rose to levels much higher than those of the well-documented late Pleistocene pluvial lakes, and some presently isolated basins were connected. Sedimentologic, geomorphic, and chronologic evidence at sites shown on the map indicates that Lakes Lahontan and Columbus-Rennie were as much as 70 m higher in the early-middle Pleistocene than during their late Pleistocene high stands. Lake Lahontan at its 1400-m shoreline level would submerge present-day Reno, Carson City, and Battle Mountain, and would flood other now-dry basins. To the east, Lakes Jonathan (new name), Diamond, Newark, and Hubbs also reached high stands during...
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A new bathymetric map of Englebright Lake, Yuba-Nevada Counties,California is compared to 1939 elevations captured from a pre-damtopographic survey to determine how much sediment has accumulatedin the reservoir in the past 60 years. A longitudinal profilealong the entire length (thalweg) of the reservoir and cross-sectionsacross the reservoir at seven points illustrate the pre-dam andpresent bottom profiles. Calculations of the total volume ofsediment impounded by the dam for eight regions of the reservoirare presented.


    map background search result map search result map Extent of Pleistocene Lakes in the Western Great Basin Bathymetric and geophysical surveys of Englebright Lake,Yuba-Nevada Counties, California Bathymetric and geophysical surveys of Englebright Lake,Yuba-Nevada Counties, California Extent of Pleistocene Lakes in the Western Great Basin