I've been in this area,Many times over the years & just about every year,the topography changes mostly due to the fires & violent squalls that have been here since time began!Some friends & I hiked/camped on the outskirts of Lockwood Valley on a Memorial Day weekend some many yrs ago,& It snowed on us overnight,we didn't pack tents but we had Ponchos,Everything was soaked in the morning as the snow had melted,our 30+ lb. packs became Much heavier packs,All 6 of us were soaked wet on our backsides,we couldn't find anymore drywood to burn,so we ate cold chili,spam,velveeta & crackers,then it started to rain just enough to create havoc on us,we packed up hastily,unevenly packed off balance,wet & cold,the wind came from Nowhere but it was warm wind,the clouds disappeared & It was dry hot summer,All of a sudden,we had a miserable rugged hike back to our vehicles of which we had to cross over Sespe creek twice,however the creek was no longer shin deep,it was a raging rapids in many area's,so we had to hike an xtra 3 miles over a 4 mile hike back,on the North side till we came to the fork,however the fork No longer existed as the flashflooding had changed everything,we now had to cross a flood plained area,the water was shin deep but the muck was knee deep,we made it,the water was freezing cold,we made it back to the vehicles to find we had tickets on our windshields,for parking in an Unauthorized area!Just because it's Southern California is Not to be disrespected,Ma' Nature Rules,Everytime!