See the full photo album in the DLA website Photos tab, or click here.
The rosete, part of the plant that floats on the surface
If you see water chestnuts in the lake anytime, please gently pull the plant out trying to get all of the root system. Then the plant will need to be disposed of properly - not in the watershed. Would you also please alert the DLA to the fact that you found water chestnuts so we can stay on top of them in the future.
Watch this video for more information.