South Platte River  search
BTUnited States
 .South Platte River
RTColorado
 Nebraska
 Platte River
SNRiver in central to NE Colorado and SW Nebraska. Indexed with states as applicable. Added to Thesaurus in 1989.
South Platte River valley  search
BTUnited States
 .South Platte River valley
RTColorado
 Nebraska
SNAlso search South Platte; South Platte River. Indexed with states as applicable.