We found this resource which goes into more detail about the likely filming location of Hawke’s cabin throughout the Airwolf series:

http://www.airwolf.me.uk/cabin.php

According to that source,

I took the liberty of scouring the lake in Google Earth for the precise location, and my best guess is 33°40’11.98″N 116°41’38.37″W (Google Earth co-ordinates).

Here is a Google map of those coordinates:

Here is more information about Airwolf filming locations, including the cabin:

• https://www.airwolfprojectx.com/filming-locations/
• https://www.airwolfprojectx.com/airwolf-filming-locations-map/

Thanks to:

1, 2, 3, 4, 5, 6, 7