Complex sentence: The headwaters rise on the eastern side of Crystal Peak near Loma Prieta, and the creek flows northeast along Casa Loma Road, until it reaches Uvas Road, and then turns south.
Split into simpler sentences: The headwaters rise on the eastern side of Crystal Peak near Loma Prieta. From there, the creek flows northeast along Casa Loma Road, until it reaches Uvas Road, and then turns south.