YoMama,
I've got my documents laminated.
To qualify as navigable river, just remember that the legal test is based on the river's natural conditions.
The natural conditions in question existed before upstream pumping began to fill holding ponds and snow making. There's records to prove that Swarthout Creek flowed nearly every year before man intervened upstream.
Streams that are navigable, for title purposes, are owned by the states, held in trust for the public. We are the public.
Take a look at Luker's Place historic photos when trout fishing was offered. Navigation, fishing, and commerce existed in Swarthout Creek long before housing existed.
I'll never advocate trespassing but public access may exist on Caltrans property that is adjacent to Hwy2.
Remember... Navigability is determined as of the date of statehood not after snowmaking!