A friend lent me his drone for an aerial survey of the lake as it is now during the drawdown. I have posted below some of the photos from November 15 when the lake was half frozen on the surface.
The rest (many more than shown below) are in this album online: https://www.smugmug.com/gallery/n-ND9bvm/
DCIM\101MEDIA\DJI_0014.JPG 
DCIM\101MEDIA\DJI_0019.JPG 
DCIM\101MEDIA\DJI_0031.JPG 
DCIM\101MEDIA\DJI_0037.JPG 
DCIM\101MEDIA\DJI_0042.JPG 
DCIM\101MEDIA\DJI_0044.JPG 
DCIM\101MEDIA\DJI_0053.JPG 
DCIM\101MEDIA\DJI_0065.JPG 
DCIM\101MEDIA\DJI_0075.JPG 
DCIM\101MEDIA\DJI_0089.JPG 
DCIM\101MEDIA\DJI_0097.JPG 
DCIM\101MEDIA\DJI_0099.JPG 
DCIM\101MEDIA\DJI_0108.JPG 
DCIM\101MEDIA\DJI_0123.JPG 
DCIM\101MEDIA\DJI_0126.JPG 
DCIM\101MEDIA\DJI_0132.JPG 
DCIM\101MEDIA\DJI_0137.JPG 
DCIM\101MEDIA\DJI_0149.JPG