Melting snow and flowing irrigation ditches mean spring has finally arrived at the base of Grand Mesa in western Colorado. Harts Basin Ranch, a 3,400-acre expanse of hayfields and pasture just south of Cedaredge, in Delta County, is coming back to life with the return of water. … The ranch has the No. 1 priority water right — meaning the oldest, which comes with the ability to use the creek’s water first — dating to 1881. … [The ranch's owners] have been accused of water speculation — which means buying up the ranch just for its senior water rights and hoarding them for a future profit.