Complex sentence: Since 1988, the creek section between the Laguna de Santa Rosa and the Russian River has often been considered part of the Laguna, and the Laguna de Santa Rosa Foundation has promoted this nomenclature.
Split into simpler sentences: Since 1988, the Creek length between the Laguna de Santa Rosa and the Russian River has often been considered part of the Laguna. The Laguna de Santa Rosa Foundation has promoted this nomenclature.