This sign was especially enigmatic. Exactly what type of activity are they attempting to discourage? Dynamite fishing? The message seems so awkwardly worded that I feel like I may have missed the point of this sign entirely. Again, I didn't see any power lines going anywhere. Best I could tell from researching later on the Internet, these reservoirs are connected to the Los Angeles Aquaduct so presumably some of Los Angeles' drinking water comes from here.